// SPDX-FileCopyrightText: 2022-2023 The go-mail Authors // // SPDX-License-Identifier: MIT package mail import ( "bytes" "context" "embed" "errors" "fmt" ht "html/template" "io" "net" "os" "reflect" "strings" "testing" ttpl "text/template" "time" ) var ( charsetTests = []struct { name string value Charset want Charset }{ {"UTF-7", CharsetUTF7, "UTF-7"}, {"UTF-8", CharsetUTF8, "UTF-8"}, {"US-ASCII", CharsetASCII, "US-ASCII"}, {"ISO-8859-1", CharsetISO88591, "ISO-8859-1"}, {"ISO-8859-2", CharsetISO88592, "ISO-8859-2"}, {"ISO-8859-3", CharsetISO88593, "ISO-8859-3"}, {"ISO-8859-4", CharsetISO88594, "ISO-8859-4"}, {"ISO-8859-5", CharsetISO88595, "ISO-8859-5"}, {"ISO-8859-6", CharsetISO88596, "ISO-8859-6"}, {"ISO-8859-7", CharsetISO88597, "ISO-8859-7"}, {"ISO-8859-9", CharsetISO88599, "ISO-8859-9"}, {"ISO-8859-13", CharsetISO885913, "ISO-8859-13"}, {"ISO-8859-14", CharsetISO885914, "ISO-8859-14"}, {"ISO-8859-15", CharsetISO885915, "ISO-8859-15"}, {"ISO-8859-16", CharsetISO885916, "ISO-8859-16"}, {"ISO-2022-JP", CharsetISO2022JP, "ISO-2022-JP"}, {"ISO-2022-KR", CharsetISO2022KR, "ISO-2022-KR"}, {"windows-1250", CharsetWindows1250, "windows-1250"}, {"windows-1251", CharsetWindows1251, "windows-1251"}, {"windows-1252", CharsetWindows1252, "windows-1252"}, {"windows-1255", CharsetWindows1255, "windows-1255"}, {"windows-1256", CharsetWindows1256, "windows-1256"}, {"KOI8-R", CharsetKOI8R, "KOI8-R"}, {"KOI8-U", CharsetKOI8U, "KOI8-U"}, {"Big5", CharsetBig5, "Big5"}, {"GB18030", CharsetGB18030, "GB18030"}, {"GB2312", CharsetGB2312, "GB2312"}, {"TIS-620", CharsetTIS620, "TIS-620"}, {"EUC-KR", CharsetEUCKR, "EUC-KR"}, {"Shift_JIS", CharsetShiftJIS, "Shift_JIS"}, {"GBK", CharsetGBK, "GBK"}, {"Unknown", CharsetUnknown, "Unknown"}, } encodingTests = []struct { name string value Encoding want Encoding }{ {"Quoted-Printable", EncodingQP, "quoted-printable"}, {"Base64", EncodingB64, "base64"}, {"Unencoded (8-Bit)", NoEncoding, "8bit"}, {"US-ASCII (7-Bit)", EncodingUSASCII, "7bit"}, } pgpTests = []struct { name string value PGPType }{ {"No PGP encoding", NoPGP}, {"PGP encrypted", PGPEncrypt}, {"PGP signed", PGPSignature}, } boundaryTests = []struct { name string value string }{ {"test123", "test123"}, {"empty string", ""}, } mimeTests = []struct { name string value MIMEVersion want MIMEVersion }{ {"1.0", MIME10, "1.0"}, {"1.1 (not a valid version at this time)", MIMEVersion("1.1"), "1.1"}, } contentTypeTests = []struct { name string ctype ContentType }{ {"text/plain", TypeTextPlain}, {"text/html", TypeTextHTML}, {"application/octet-stream", TypeAppOctetStream}, } // Inspired by https://www.youtube.com/watch?v=xxX81WmXjPg&t=623s, yet, some assumptions in that video are // incorrect for RFC5321/RFC5322 but rely on deprecated information from RFC822. The tests have been // adjusted accordingly. rfc5322Test = []struct { value string valid bool }{ {"hi@domain.tld", true}, {"hi@", false}, {`hi+there@domain.tld`, true}, {"hi.there@domain.tld", true}, {"hi.@domain.tld", false}, // Point at the end of localpart is not allowed {"hi..there@domain.tld", false}, // Double point is not allowed {`!#$%&'(-/=?'@domain.tld`, false}, // Invalid characters {"hi*there@domain.tld", true}, // * is allowed in localpart {`#$%!^/&@domain.tld`, true}, // Allowed localpart characters {"h(a)i@domain.tld", false}, // Not allowed to use parenthesis {"(hi)there@domain.tld", false}, // The (hi) at the start is a comment which is allowed in RFC822 but not in RFC5322 anymore {"hithere@domain.tld(tld)", true}, // The (tld) at the end is also a comment {"hi@there@domain.tld", false}, // Can't have two @ signs {`"hi@there"@domain.tld`, true}, // Quoted @-signs are allowed {`"hi there"@domain.tld`, true}, // Quoted whitespaces are allowed {`" "@domain.tld`, true}, // Still valid, since quoted {`"<\"@\".!#%$@domain.tld"`, false}, // Quoting with illegal characters is not allowed {`<\"@\\".!#%$@domain.tld`, false}, // Still a bunch of random illegal characters {`hi"@"there@domain.tld`, false}, // Quotes must be dot-separated {`"<\"@\\".!.#%$@domain.tld`, false}, // Quote is escaped and dot-separated which would be RFC822 compliant, but not RFC5322 compliant {`hi\ there@domain.tld`, false}, // Spaces must be quoted {"hello@tld", true}, // TLD is enough {`你好@域名.顶级域名`, true}, // We speak RFC6532 {"1@23456789", true}, // Hypothetically valid, if somebody registers that TLD {"1@[23456789]", false}, // While 23456789 is decimal for 1.101.236.21 it is not RFC5322 compliant } ) //go:embed testdata/attachment.txt testdata/embed.txt var efs embed.FS func TestNewMsg(t *testing.T) { t.Run("create new message", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if message.addrHeader == nil { t.Errorf("address header map is nil") } if message.genHeader == nil { t.Errorf("generic header map is nil") } if message.preformHeader == nil { t.Errorf("preformatted header map is nil") } if message.charset != CharsetUTF8 { t.Errorf("default charset for new Msg mismatch. Expected: %s, got: %s", CharsetUTF8, message.charset) } if message.encoding != EncodingQP { t.Errorf("default encoding for new Msg mismatch. Expected: %s, got: %s", EncodingQP, message.encoding) } if message.mimever != MIME10 { t.Errorf("default MIME version for new Msg mismatch. Expected: %s, got: %s", MIME10, message.mimever) } if reflect.TypeOf(message.encoder).String() != "mime.WordEncoder" { t.Errorf("default encoder for new Msg mismatch. Expected: %s, got: %s", "mime.WordEncoder", reflect.TypeOf(message.encoder).String()) } if !strings.EqualFold(message.encoder.Encode(message.charset.String(), "ab12§$/"), `=?UTF-8?q?ab12=C2=A7$/?=`) { t.Errorf("default encoder for new Msg mismatch. QP encoded expected string: %s, got: %s", `=?UTF-8?q?ab12=C2=A7$/?=`, message.encoder.Encode(message.charset.String(), "ab12§$/")) } }) t.Run("new message with nil option", func(t *testing.T) { message := NewMsg(nil) if message == nil { t.Fatal("message is nil") } }) t.Run("new message with custom charsets", func(t *testing.T) { for _, tt := range charsetTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg(WithCharset(tt.value), nil) if message == nil { t.Fatal("message is nil") } if message.charset != tt.want { t.Fatalf("NewMsg(WithCharset(%s)) failed. Expected charset: %s, got: %s", tt.value, tt.want, message.charset) } }) } }) t.Run("new message with custom encoding", func(t *testing.T) { for _, tt := range encodingTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg(WithEncoding(tt.value), nil) if message == nil { t.Fatal("message is nil") } if message.encoding != tt.want { t.Errorf("NewMsg(WithEncoding(%s)) failed. Expected encoding: %s, got: %s", tt.value, tt.want, message.encoding) } }) } }) t.Run("new message with custom MIME version", func(t *testing.T) { for _, tt := range mimeTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg(WithMIMEVersion(tt.value)) if message == nil { t.Fatal("message is nil") } if message.mimever != tt.want { t.Errorf("NewMsg(WithMIMEVersion(%s)) failed. Expected MIME version: %s, got: %s", tt.value, tt.want, message.mimever) } }) } }) t.Run("new message with custom boundary", func(t *testing.T) { for _, tt := range boundaryTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg(WithBoundary(tt.value)) if message == nil { t.Fatal("message is nil") } if message.boundary != tt.value { t.Errorf("NewMsg(WithBoundary(%s)) failed. Expected boundary: %s, got: %s", tt.value, tt.value, message.boundary) } }) } }) t.Run("new message with custom PGP type", func(t *testing.T) { for _, tt := range pgpTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg(WithPGPType(tt.value)) if message == nil { t.Fatal("message is nil") } if message.pgptype != tt.value { t.Errorf("NewMsg(WithPGPType(%d)) failed. Expected PGP type: %d, got: %d", tt.value, tt.value, message.pgptype) } }) } }) t.Run("new message with middleware: uppercase", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if len(message.middlewares) != 0 { t.Errorf("NewMsg() failed. Expected empty middlewares, got: %d", len(message.middlewares)) } message = NewMsg(WithMiddleware(uppercaseMiddleware{})) if len(message.middlewares) != 1 { t.Errorf("NewMsg(WithMiddleware(uppercaseMiddleware{})) failed. Expected 1 middleware, got: %d", len(message.middlewares)) } message = NewMsg(WithMiddleware(uppercaseMiddleware{}), WithMiddleware(encodeMiddleware{})) if len(message.middlewares) != 2 { t.Errorf("NewMsg(WithMiddleware(uppercaseMiddleware{}),WithMiddleware(encodeMiddleware{})) "+ "failed. Expected 2 middleware, got: %d", len(message.middlewares)) } }) t.Run("new message without default user-agent", func(t *testing.T) { message := NewMsg(WithNoDefaultUserAgent()) if message == nil { t.Fatal("message is nil") } if !message.noDefaultUserAgent { t.Errorf("NewMsg(WithNoDefaultUserAgent()) failed. Expected noDefaultUserAgent to be true, got: %t", message.noDefaultUserAgent) } }) } func TestMsg_SetCharset(t *testing.T) { t.Run("SetCharset on new message", func(t *testing.T) { for _, tt := range charsetTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetCharset(tt.value) if message.charset != tt.want { t.Errorf("failed to set charset. Expected: %s, got: %s", tt.want, message.charset) } }) } }) t.Run("SetCharset to override WithCharset", func(t *testing.T) { message := NewMsg(WithCharset(CharsetUTF7)) if message == nil { t.Fatal("message is nil") } if message.charset != CharsetUTF7 { t.Errorf("failed to set charset on message creation. Expected: %s, got: %s", CharsetUTF7, message.charset) } message.SetCharset(CharsetUTF8) if message.charset != CharsetUTF8 { t.Errorf("failed to set charset. Expected: %s, got: %s", CharsetUTF8, message.charset) } }) } func TestMsg_SetEncoding(t *testing.T) { t.Run("SetEncoding on new message", func(t *testing.T) { for _, tt := range encodingTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetEncoding(tt.value) if message.encoding != tt.want { t.Errorf("failed to set encoding. Expected: %s, got: %s", tt.want, message.encoding) } }) } }) t.Run("SetEncoding to override WithEncoding", func(t *testing.T) { message := NewMsg(WithEncoding(EncodingUSASCII)) if message == nil { t.Fatal("message is nil") } if message.encoding != EncodingUSASCII { t.Errorf("failed to set encoding on message creation. Expected: %s, got: %s", EncodingUSASCII, message.encoding) } message.SetEncoding(EncodingB64) if message.encoding != EncodingB64 { t.Errorf("failed to set encoding. Expected: %s, got: %s", EncodingB64, message.encoding) } }) } func TestMsg_SetBoundary(t *testing.T) { t.Run("SetBoundary on new message", func(t *testing.T) { for _, tt := range boundaryTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBoundary(tt.value) if message.boundary != tt.value { t.Errorf("failed to set boundary. Expected: %s, got: %s", tt.value, message.boundary) } }) } }) t.Run("SetBoundary to override WithBoundary", func(t *testing.T) { message := NewMsg(WithBoundary("123Test")) if message == nil { t.Fatal("message is nil") } if message.boundary != "123Test" { t.Errorf("failed to set boundary on message creation. Expected: %s, got: %s", "123Test", message.boundary) } message.SetBoundary("test123") if message.boundary != "test123" { t.Errorf("failed to set boundary. Expected: %s, got: %s", "test123", message.boundary) } }) } func TestMsg_SetMIMEVersion(t *testing.T) { t.Run("SetMIMEVersion on new message", func(t *testing.T) { for _, tt := range mimeTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetMIMEVersion(tt.value) if message.mimever != tt.value { t.Errorf("failed to set mime version. Expected: %s, got: %s", tt.value, message.mimever) } }) } }) t.Run("SetMIMEVersion to override WithMIMEVersion", func(t *testing.T) { message := NewMsg(WithMIMEVersion("1.1")) if message == nil { t.Fatal("message is nil") } if message.mimever != "1.1" { t.Errorf("failed to set mime version on message creation. Expected: %s, got: %s", "1.1", message.mimever) } message.SetMIMEVersion(MIME10) if message.mimever != MIME10 { t.Errorf("failed to set mime version. Expected: %s, got: %s", MIME10, message.mimever) } }) } func TestMsg_SetPGPType(t *testing.T) { t.Run("SetPGPType on new message", func(t *testing.T) { for _, tt := range pgpTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetPGPType(tt.value) if message.pgptype != tt.value { t.Errorf("failed to set pgp type. Expected: %d, got: %d", tt.value, message.pgptype) } }) } }) t.Run("SetPGPType to override WithPGPType", func(t *testing.T) { message := NewMsg(WithPGPType(PGPSignature)) if message == nil { t.Fatal("message is nil") } if message.pgptype != PGPSignature { t.Errorf("failed to set pgp type on message creation. Expected: %d, got: %d", PGPSignature, message.pgptype) } message.SetPGPType(PGPEncrypt) if message.pgptype != PGPEncrypt { t.Errorf("failed to set pgp type. Expected: %d, got: %d", PGPEncrypt, message.pgptype) } }) } func TestMsg_Encoding(t *testing.T) { t.Run("Encoding returns expected string", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range encodingTests { t.Run(tt.name, func(t *testing.T) { message.SetEncoding(tt.value) if message.Encoding() != tt.want.String() { t.Errorf("failed to get encoding. Expected: %s, got: %s", tt.want.String(), message.Encoding()) } }) } }) } func TestMsg_Charset(t *testing.T) { t.Run("Charset returns expected string", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range charsetTests { t.Run(tt.name, func(t *testing.T) { message.SetCharset(tt.value) if message.Charset() != tt.want.String() { t.Errorf("failed to get charset. Expected: %s, got: %s", tt.want.String(), message.Charset()) } }) } }) } func TestMsg_SetHeader(t *testing.T) { t.Run("SetHeader on new message", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { //goland:noinspection GoDeprecation message.SetHeader(tt.header, "test", "foo", "bar") values, ok := message.genHeader[tt.header] if !ok { t.Fatalf("failed to set header, genHeader field for %s is not set", tt.header) } if len(values) != 3 { t.Fatalf("failed to set header, genHeader value count for %s is %d, want: 3", tt.header, len(values)) } if values[0] != "test" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, values[0], "test") } if values[1] != "foo" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, values[1], "foo") } if values[2] != "bar" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, values[1], "bar") } }) } }) } func TestMsg_SetGenHeader(t *testing.T) { t.Run("SetGenHeader on new message", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { message.SetGenHeader(tt.header, "test", "foo", "bar") values, ok := message.genHeader[tt.header] if !ok { t.Fatalf("failed to set header, genHeader field for %s is not set", tt.header) } if len(values) != 3 { t.Fatalf("failed to set header, genHeader value count for %s is %d, want: 3", tt.header, len(values)) } if values[0] != "test" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, values[0], "test") } if values[1] != "foo" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, values[1], "foo") } if values[2] != "bar" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, values[1], "bar") } }) } }) t.Run("SetGenHeader with empty genHeaderMap", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.genHeader = nil message.SetGenHeader(HeaderSubject, "test", "foo", "bar") values, ok := message.genHeader[HeaderSubject] if !ok { t.Fatalf("failed to set header, genHeader field for %s is not set", HeaderSubject) } if len(values) != 3 { t.Fatalf("failed to set header, genHeader value count for %s is %d, want: 3", HeaderSubject, len(values)) } if values[0] != "test" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", HeaderSubject, values[0], "test") } if values[1] != "foo" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", HeaderSubject, values[1], "foo") } if values[2] != "bar" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", HeaderSubject, values[1], "bar") } }) } func TestMsg_SetHeaderPreformatted(t *testing.T) { t.Run("SetHeaderPreformatted on new message", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { //goland:noinspection GoDeprecation message.SetHeaderPreformatted(tt.header, "test") value, ok := message.preformHeader[tt.header] if !ok { t.Fatalf("failed to set header, genHeader field for %s is not set", tt.header) } if value != "test" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, value, "test") } }) } }) } func TestMsg_SetGenHeaderPreformatted(t *testing.T) { t.Run("SetGenHeaderPreformatted on new message", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { message.SetGenHeaderPreformatted(tt.header, "test") value, ok := message.preformHeader[tt.header] if !ok { t.Fatalf("failed to set header, genHeader field for %s is not set", tt.header) } if value != "test" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", tt.header, value, "test") } }) } }) t.Run("SetGenHeaderPreformatted with empty preformHeader map", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.preformHeader = nil message.SetGenHeaderPreformatted(HeaderSubject, "test") value, ok := message.preformHeader[HeaderSubject] if !ok { t.Fatalf("failed to set header, genHeader field for %s is not set", HeaderSubject) } if value != "test" { t.Errorf("failed to set header, genHeader value for %s is %s, want: %s", HeaderSubject, value, "test") } }) } func TestMsg_SetAddrHeader(t *testing.T) { t.Run("SetAddrHeader with valid address without <>", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.SetAddrHeader(tt.header, "toni.tester@example.com"); err != nil { t.Fatalf("failed to set address header, err: %s", err) } checkAddrHeader(t, message, tt.header, "SetAddrHeader", 0, 1, "toni.tester@example.com", "") }) } }) t.Run("SetAddrHeader with valid address with <>", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.SetAddrHeader(tt.header, ""); err != nil { t.Fatalf("failed to set address header, err: %s", err) } checkAddrHeader(t, message, tt.header, "SetAddrHeader", 0, 1, "toni.tester@example.com", "") }) } }) t.Run("SetAddrHeader with valid address and name", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.SetAddrHeader(tt.header, fmt.Sprintf("%q <%s>", "Toni Tester", "toni.tester@example.com")); err != nil { t.Fatalf("failed to set address header, err: %s", err) } checkAddrHeader(t, message, tt.header, "SetAddrHeader", 0, 1, "toni.tester@example.com", "Toni Tester") }) } }) t.Run("SetAddrHeader with multiple addresses", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { // From must only have one address if tt.header == HeaderFrom { return } message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.SetAddrHeader(tt.header, "toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set address header, err: %s", err) } checkAddrHeader(t, message, tt.header, "SetAddrHeader", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, tt.header, "SetAddrHeader", 1, 2, "tina.tester@example.com", "") }) } }) t.Run("SetAddrHeader with multiple addresses but from addresses should only return the first one", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.SetAddrHeader(HeaderFrom, "toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set address header, err: %s", err) } checkAddrHeader(t, message, HeaderFrom, "SetAddrHeader", 0, 1, "toni.tester@example.com", "") }) t.Run("SetAddrHeader with addrHeader map is nil", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.addrHeader = nil if err := message.SetAddrHeader(HeaderFrom, "toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set address header, err: %s", err) } checkAddrHeader(t, message, HeaderFrom, "SetAddrHeader", 0, 1, "toni.tester@example.com", "") }) t.Run("SetAddrHeader with invalid address", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.SetAddrHeader(HeaderFrom, "invalid"); err == nil { t.Fatalf("SetAddrHeader with invalid address should fail") } }) } }) } func TestMsg_SetAddrHeaderIgnoreInvalid(t *testing.T) { t.Run("SetAddrHeaderIgnoreInvalid with valid address without <>", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetAddrHeaderIgnoreInvalid(tt.header, "toni.tester@example.com") checkAddrHeader(t, message, tt.header, "SetAddrHeaderIgnoreInvalid", 0, 1, "toni.tester@example.com", "") }) } }) t.Run("SetAddrHeaderIgnoreInvalid with valid address with <>", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetAddrHeaderIgnoreInvalid(tt.header, "") checkAddrHeader(t, message, tt.header, "SetAddrHeaderIgnoreInvalid", 0, 1, "toni.tester@example.com", "") }) } }) t.Run("SetAddrHeaderIgnoreInvalid with multiple valid addresses", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { // From must only have one address if tt.header == HeaderFrom { return } message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetAddrHeaderIgnoreInvalid(tt.header, "toni.tester@example.com", "tina.tester@example.com") checkAddrHeader(t, message, tt.header, "SetAddrHeaderIgnoreInvalid", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, tt.header, "SetAddrHeaderIgnoreInvalid", 1, 2, "tina.tester@example.com", "") }) } }) t.Run("SetAddrHeaderIgnoreInvalid with multiple addresses valid and invalid", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { // From must only have one address if tt.header == HeaderFrom { return } message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetAddrHeaderIgnoreInvalid(tt.header, "toni.tester@example.com", "invalid", "tina.tester@example.com") checkAddrHeader(t, message, tt.header, "SetAddrHeaderIgnoreInvalid", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, tt.header, "SetAddrHeaderIgnoreInvalid", 1, 2, "tina.tester@example.com", "") }) } }) t.Run("SetAddrHeaderIgnoreInvalid with addrHeader map is nil", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.addrHeader = nil message.SetAddrHeaderIgnoreInvalid(HeaderFrom, "toni.tester@example.com", "tina.tester@example.com") checkAddrHeader(t, message, HeaderFrom, "SetAddrHeaderIgnoreInvalid", 0, 1, "toni.tester@example.com", "") }) t.Run("SetAddrHeaderIgnoreInvalid with invalid addresses only", func(t *testing.T) { for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetAddrHeaderIgnoreInvalid(HeaderTo, "invalid", "foo") addresses, ok := message.addrHeader[HeaderTo] if !ok { t.Fatalf("failed to set address header, addrHeader field for %s is not set", HeaderTo) } if len(addresses) != 0 { t.Fatalf("failed to set address header, addrHeader value count for To is: %d, want: 0", len(addresses)) } }) } }) } func TestMsg_EnvelopeFrom(t *testing.T) { t.Run("EnvelopeFrom with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom("toni.tester@example.com"); err != nil { t.Fatalf("failed to set envelope from: %s", err) } checkAddrHeader(t, message, HeaderEnvelopeFrom, "EnvelopeFrom", 0, 1, "toni.tester@example.com", "") }) t.Run("EnvelopeFrom with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom("invalid"); err == nil { t.Fatalf("EnvelopeFrom should fail with invalid address") } }) t.Run("EnvelopeFrom with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom(""); err == nil { t.Fatalf("EnvelopeFrom should fail with invalid address") } }) } func TestMsg_EnvelopeFromFormat(t *testing.T) { t.Run("EnvelopeFromFormat with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFromFormat("Toni Tester", "toni.tester@example.com"); err != nil { t.Fatalf("failed to set envelope From: %s", err) } checkAddrHeader(t, message, HeaderEnvelopeFrom, "FromFormat", 0, 1, "toni.tester@example.com", "Toni Tester") }) t.Run("EnvelopeFromFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFromFormat("Toni Tester", "invalid"); err == nil { t.Fatalf("EnvelopeFromFormat should fail with invalid address") } }) t.Run("EnvelopeFromFormat with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFromFormat("", ""); err == nil { t.Fatalf("EnvelopeFromFormat should fail with invalid address") } }) } func TestMsg_From(t *testing.T) { t.Run("From with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set From: %s", err) } checkAddrHeader(t, message, HeaderFrom, "From", 0, 1, "toni.tester@example.com", "") }) t.Run("From with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("invalid"); err == nil { t.Fatalf("From should fail with invalid address") } }) t.Run("From with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From(""); err == nil { t.Fatalf("From should fail with invalid address") } }) t.Run("From with different RFC5322 addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range rfc5322Test { t.Run(tt.value, func(t *testing.T) { err := message.From(tt.value) if err != nil && tt.valid { t.Errorf("From on address %s should succeed, but failed with: %s", tt.value, err) } if err == nil && !tt.valid { t.Errorf("From on address %s should fail, but succeeded", tt.value) } }) } }) } func TestMsg_FromFormat(t *testing.T) { t.Run("FromFormat with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.FromFormat("Toni Tester", "toni.tester@example.com"); err != nil { t.Fatalf("failed to set From: %s", err) } checkAddrHeader(t, message, HeaderFrom, "FromFormat", 0, 1, "toni.tester@example.com", "Toni Tester") }) t.Run("FromFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.FromFormat("Toni Tester", "invalid"); err == nil { t.Fatalf("FromFormat should fail with invalid address") } }) t.Run("FromFormat with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.FromFormat("", ""); err == nil { t.Fatalf("FromFormat should fail with invalid address") } }) } func TestMsg_To(t *testing.T) { t.Run("To with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set To: %s", err) } checkAddrHeader(t, message, HeaderTo, "To", 0, 1, "toni.tester@example.com", "") }) t.Run("To with multiple valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set To: %s", err) } checkAddrHeader(t, message, HeaderTo, "To", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderTo, "To", 1, 2, "tina.tester@example.com", "") }) t.Run("To with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("invalid"); err == nil { t.Fatalf("To should fail with invalid address") } }) t.Run("To with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To(""); err == nil { t.Fatalf("To should fail with invalid address") } }) t.Run("To with different RFC5322 addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range rfc5322Test { t.Run(tt.value, func(t *testing.T) { err := message.To(tt.value) if err != nil && tt.valid { t.Errorf("To on address %s should succeed, but failed with: %s", tt.value, err) } if err == nil && !tt.valid { t.Errorf("To on address %s should fail, but succeeded", tt.value) } }) } }) } func TestMsg_AddTo(t *testing.T) { t.Run("AddTo with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set To: %s", err) } if err := message.AddTo("tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional To: %s", err) } checkAddrHeader(t, message, HeaderTo, "AddTo", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderTo, "AddTo", 1, 2, "tina.tester@example.com", "") }) t.Run("AddTo with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set To: %s", err) } if err := message.AddTo("invalid"); err == nil { t.Errorf("AddTo should fail with invalid address") } checkAddrHeader(t, message, HeaderTo, "AddTo", 0, 1, "toni.tester@example.com", "") }) } func TestMsg_AddToFormat(t *testing.T) { t.Run("AddToFormat with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set To: %s", err) } if err := message.AddToFormat("Tina Tester", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional To: %s", err) } checkAddrHeader(t, message, HeaderTo, "AddToFormat", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderTo, "AddToFormat", 1, 2, "tina.tester@example.com", "Tina Tester") }) t.Run("AddToFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set To: %s", err) } if err := message.AddToFormat("Invalid", "invalid"); err == nil { t.Errorf("AddToFormat should fail with invalid address") } checkAddrHeader(t, message, HeaderTo, "AddToFormat", 0, 1, "toni.tester@example.com", "") }) } func TestMsg_ToIgnoreInvalid(t *testing.T) { t.Run("ToIgnoreInvalid with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.ToIgnoreInvalid("toni.tester@example.com") checkAddrHeader(t, message, HeaderTo, "ToIgnoreInvalid", 0, 1, "toni.tester@example.com", "") }) t.Run("ToIgnoreInvalid with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.ToIgnoreInvalid("invalid") addresses, ok := message.addrHeader[HeaderTo] if !ok { t.Fatalf("failed to set ToIgnoreInvalid, addrHeader field is not set") } if len(addresses) != 0 { t.Fatalf("failed to set ToIgnoreInvalid, addrHeader value count is: %d, want: 0", len(addresses)) } }) t.Run("ToIgnoreInvalid with valid and invalid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.ToIgnoreInvalid("toni.tester@example.com", "invalid", "tina.tester@example.com") checkAddrHeader(t, message, HeaderTo, "ToIgnoreInvalid", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderTo, "ToIgnoreInvalid", 1, 2, "tina.tester@example.com", "") }) } func TestMsg_ToFromString(t *testing.T) { t.Run("ToFromString with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ToFromString(`toni.tester@example.com,`); err != nil { t.Fatalf("failed to set ToFromString: %s", err) } checkAddrHeader(t, message, HeaderTo, "ToFromString", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderTo, "ToFromString", 1, 2, "tina.tester@example.com", "") }) t.Run("ToFromString with valid addresses and empty fields", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ToFromString(`toni.tester@example.com ,,`); err != nil { t.Fatalf("failed to set ToFromString: %s", err) } checkAddrHeader(t, message, HeaderTo, "ToFromString", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderTo, "ToFromString", 1, 2, "tina.tester@example.com", "") }) } func TestMsg_Cc(t *testing.T) { t.Run("Cc with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Cc: %s", err) } checkAddrHeader(t, message, HeaderCc, "Cc", 0, 1, "toni.tester@example.com", "") }) t.Run("Cc with multiple valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set Cc: %s", err) } checkAddrHeader(t, message, HeaderCc, "Cc", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderCc, "Cc", 1, 2, "tina.tester@example.com", "") }) t.Run("Cc with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("invalid"); err == nil { t.Fatalf("Cc should fail with invalid address") } }) t.Run("Cc with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc(""); err == nil { t.Fatalf("Cc should fail with invalid address") } }) t.Run("Cc with different RFC5322 addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range rfc5322Test { t.Run(tt.value, func(t *testing.T) { err := message.Cc(tt.value) if err != nil && tt.valid { t.Errorf("Cc on address %s should succeed, but failed with: %s", tt.value, err) } if err == nil && !tt.valid { t.Errorf("Cc on address %s should fail, but succeeded", tt.value) } }) } }) } func TestMsg_AddCc(t *testing.T) { t.Run("AddCc with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Cc: %s", err) } if err := message.AddCc("tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional Cc: %s", err) } checkAddrHeader(t, message, HeaderCc, "AddCc", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderCc, "AddCc", 1, 2, "tina.tester@example.com", "") }) t.Run("AddCc with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Cc: %s", err) } if err := message.AddCc("invalid"); err == nil { t.Errorf("AddCc should fail with invalid address") } checkAddrHeader(t, message, HeaderCc, "AddCc", 0, 1, "toni.tester@example.com", "") }) } func TestMsg_AddCcFormat(t *testing.T) { t.Run("AddCcFormat with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Cc: %s", err) } if err := message.AddCcFormat("Tina Tester", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional Cc: %s", err) } checkAddrHeader(t, message, HeaderCc, "AddCcFormat", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderCc, "AddCcFormat", 1, 2, "tina.tester@example.com", "Tina Tester") }) t.Run("AddCcFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Cc: %s", err) } if err := message.AddCcFormat("Invalid", "invalid"); err == nil { t.Errorf("AddCcFormat should fail with invalid address") } checkAddrHeader(t, message, HeaderCc, "AddCcFormat", 0, 1, "toni.tester@example.com", "") }) } func TestMsg_CcIgnoreInvalid(t *testing.T) { t.Run("CcIgnoreInvalid with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.CcIgnoreInvalid("toni.tester@example.com") checkAddrHeader(t, message, HeaderCc, "CcIgnoreInvalid", 0, 1, "toni.tester@example.com", "") }) t.Run("CcIgnoreInvalid with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.CcIgnoreInvalid("invalid") addresses, ok := message.addrHeader[HeaderCc] if !ok { t.Fatalf("failed to set CcIgnoreInvalid, addrHeader field is not set") } if len(addresses) != 0 { t.Fatalf("failed to set CcIgnoreInvalid, addrHeader value count is: %d, want: 0", len(addresses)) } }) t.Run("CcIgnoreInvalid with valid and invalid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.CcIgnoreInvalid("toni.tester@example.com", "invalid", "tina.tester@example.com") checkAddrHeader(t, message, HeaderCc, "CcIgnoreInvalid", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderCc, "CcIgnoreInvalid", 1, 2, "tina.tester@example.com", "") }) } func TestMsg_CcFromString(t *testing.T) { t.Run("CcFromString with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.CcFromString(`toni.tester@example.com,`); err != nil { t.Fatalf("failed to set CcFromString: %s", err) } checkAddrHeader(t, message, HeaderCc, "CcFromString", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderCc, "CcFromString", 1, 2, "tina.tester@example.com", "") }) t.Run("CcFromString with valid addresses and empty fields", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.CcFromString(`toni.tester@example.com ,,`); err != nil { t.Fatalf("failed to set CcFromString: %s", err) } checkAddrHeader(t, message, HeaderCc, "CcFromString", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderCc, "CcFromString", 1, 2, "tina.tester@example.com", "") }) } func TestMsg_Bcc(t *testing.T) { t.Run("Bcc with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Bcc: %s", err) } checkAddrHeader(t, message, HeaderBcc, "Bcc", 0, 1, "toni.tester@example.com", "") }) t.Run("Bcc with multiple valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set Bcc: %s", err) } checkAddrHeader(t, message, HeaderBcc, "Bcc", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderBcc, "Bcc", 1, 2, "tina.tester@example.com", "") }) t.Run("Bcc with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("invalid"); err == nil { t.Fatalf("Bcc should fail with invalid address") } }) t.Run("Bcc with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc(""); err == nil { t.Fatalf("Bcc should fail with invalid address") } }) t.Run("Bcc with different RFC5322 addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range rfc5322Test { t.Run(tt.value, func(t *testing.T) { err := message.Bcc(tt.value) if err != nil && tt.valid { t.Errorf("Bcc on address %s should succeed, but failed with: %s", tt.value, err) } if err == nil && !tt.valid { t.Errorf("Bcc on address %s should fail, but succeeded", tt.value) } }) } }) } func TestMsg_AddBcc(t *testing.T) { t.Run("AddBcc with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Bcc: %s", err) } if err := message.AddBcc("tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional Bcc: %s", err) } checkAddrHeader(t, message, HeaderBcc, "AddBcc", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderBcc, "AddBcc", 1, 2, "tina.tester@example.com", "") }) t.Run("AddBcc with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Bcc: %s", err) } if err := message.AddBcc("invalid"); err == nil { t.Errorf("AddBcc should fail with invalid address") } checkAddrHeader(t, message, HeaderBcc, "AddBcc", 0, 1, "toni.tester@example.com", "") }) } func TestMsg_AddBccFormat(t *testing.T) { t.Run("AddBccFormat with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Bcc: %s", err) } if err := message.AddBccFormat("Tina Tester", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional Bcc: %s", err) } checkAddrHeader(t, message, HeaderBcc, "AddBccFormat", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderBcc, "AddBccFormat", 1, 2, "tina.tester@example.com", "Tina Tester") }) t.Run("AddBccFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set Bcc: %s", err) } if err := message.AddBccFormat("Invalid", "invalid"); err == nil { t.Errorf("AddBccFormat should fail with invalid address") } checkAddrHeader(t, message, HeaderBcc, "AddBccFormat", 0, 1, "toni.tester@example.com", "") }) } func TestMsg_BccIgnoreInvalid(t *testing.T) { t.Run("BccIgnoreInvalid with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.BccIgnoreInvalid("toni.tester@example.com") checkAddrHeader(t, message, HeaderBcc, "BccIgnoreInvalid", 0, 1, "toni.tester@example.com", "") }) t.Run("BccIgnoreInvalid with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.BccIgnoreInvalid("invalid") addresses, ok := message.addrHeader[HeaderBcc] if !ok { t.Fatalf("failed to set BccIgnoreInvalid, addrHeader field is not set") } if len(addresses) != 0 { t.Fatalf("failed to set BccIgnoreInvalid, addrHeader value count is: %d, want: 0", len(addresses)) } }) t.Run("BccIgnoreInvalid with valid and invalid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.BccIgnoreInvalid("toni.tester@example.com", "invalid", "tina.tester@example.com") checkAddrHeader(t, message, HeaderBcc, "BccIgnoreInvalid", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderBcc, "BccIgnoreInvalid", 1, 2, "tina.tester@example.com", "") }) } func TestMsg_BccFromString(t *testing.T) { t.Run("BccFromString with valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.BccFromString(`toni.tester@example.com,`); err != nil { t.Fatalf("failed to set BccFromString: %s", err) } checkAddrHeader(t, message, HeaderBcc, "BccFromString", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderBcc, "BccFromString", 1, 2, "tina.tester@example.com", "") }) t.Run("BccFromString with valid addresses and empty fields", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.BccFromString(`toni.tester@example.com ,,`); err != nil { t.Fatalf("failed to set BccFromString: %s", err) } checkAddrHeader(t, message, HeaderBcc, "BccFromString", 0, 2, "toni.tester@example.com", "") checkAddrHeader(t, message, HeaderBcc, "BccFromString", 1, 2, "tina.tester@example.com", "") }) } func TestMsg_ReplyTo(t *testing.T) { t.Run("ReplyTo with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ReplyTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set ReplyTo: %s", err) } checkGenHeader(t, message, HeaderReplyTo, "ReplyTo", 0, 1, "") }) t.Run("ReplyTo with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ReplyTo("invalid"); err == nil { t.Fatalf("ReplyTo should fail with invalid address") } }) t.Run("ReplyTo with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ReplyTo(""); err == nil { t.Fatalf("ReplyTo should fail with invalid address") } }) t.Run("ReplyTo with different RFC5322 addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range rfc5322Test { t.Run(tt.value, func(t *testing.T) { err := message.ReplyTo(tt.value) if err != nil && tt.valid { t.Errorf("ReplyTo on address %s should succeed, but failed with: %s", tt.value, err) } if err == nil && !tt.valid { t.Errorf("ReplyTo on address %s should fail, but succeeded", tt.value) } }) } }) } func TestMsg_ReplyToFormat(t *testing.T) { t.Run("ReplyToFormat with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ReplyToFormat("Tina Tester", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set ReplyTo: %s", err) } checkGenHeader(t, message, HeaderReplyTo, "ReplyToFormat", 0, 1, `"Tina Tester" `) }) t.Run("ReplyToFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.ReplyToFormat("Invalid", "invalid"); err == nil { t.Errorf("ReplyToFormat should fail with invalid address") } }) } func TestMsg_Subject(t *testing.T) { tests := []struct { name string subject string want string }{ {"Normal latin characters", "Hello world!", "Hello world!"}, {"Empty string", "", ""}, { "European umlaut characters", "Héllô wörld! äöüß", "=?UTF-8?q?H=C3=A9ll=C3=B4_w=C3=B6rld!_=C3=A4=C3=B6=C3=BC=C3=9F?=", }, { "Japanese characters", `これはテスト対象です。`, `=?UTF-8?q?=E3=81=93=E3=82=8C=E3=81=AF=E3=83=86=E3=82=B9=E3=83=88=E5=AF=BE?= ` + `=?UTF-8?q?=E8=B1=A1=E3=81=A7=E3=81=99=E3=80=82?=`, }, { "Simplified chinese characters", `这是一个测试主题`, `=?UTF-8?q?=E8=BF=99=E6=98=AF=E4=B8=80=E4=B8=AA=E6=B5=8B=E8=AF=95=E4=B8=BB?= ` + `=?UTF-8?q?=E9=A2=98?=`, }, { "Cyrillic characters", `Это испытуемый`, `=?UTF-8?q?=D0=AD=D1=82=D0=BE_=D0=B8=D1=81=D0=BF=D1=8B=D1=82=D1=83=D0=B5?= ` + `=?UTF-8?q?=D0=BC=D1=8B=D0=B9?=`, }, {"Emoji characters", `New Offer 🚀`, `=?UTF-8?q?New_Offer_=F0=9F=9A=80?=`}, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.Subject(tt.subject) checkGenHeader(t, message, HeaderSubject, "Subject", 0, 1, tt.want) }) } } func TestMsg_SetMessageID(t *testing.T) { t.Run("SetMessageID randomness", func(t *testing.T) { var mids []string message := NewMsg() if message == nil { t.Fatal("message is nil") } for i := 0; i < 50_000; i++ { message.SetMessageID() mid := message.GetMessageID() mids = append(mids, mid) } c := make(map[string]int) for i := range mids { c[mids[i]]++ } for k, v := range c { if v > 1 { t.Errorf("MessageID randomness not given. MessageID %q was generated %d times", k, v) } } }) } func TestMsg_GetMessageID(t *testing.T) { t.Run("GetMessageID with normal IDs", func(t *testing.T) { tests := []struct { msgid string want string }{ {"this.is.a.test", ""}, {"12345.6789@domain.com", "<12345.6789@domain.com>"}, {"abcd1234@sub.domain.com", ""}, {"uniqeID-123@domain.co.tld", ""}, {"2024_10_26192300@domain.tld", "<2024_10_26192300@domain.tld>"}, } for _, tt := range tests { t.Run(tt.msgid, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetMessageIDWithValue(tt.msgid) msgid := message.GetMessageID() if !strings.EqualFold(tt.want, msgid) { t.Errorf("GetMessageID() failed. Want: %s, got: %s", tt.want, msgid) } }) } }) t.Run("GetMessageID no messageID set should return an empty string", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } msgid := message.GetMessageID() if msgid != "" { t.Errorf("GetMessageID() failed. Want: empty string, got: %s", msgid) } }) } func TestMsg_SetMessageIDWithValue(t *testing.T) { // We have already covered SetMessageIDWithValue in SetMessageID and GetMessageID t.Log("SetMessageIDWithValue is fully covered by TestMsg_GetMessageID") } func TestMsg_SetBulk(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBulk() checkGenHeader(t, message, HeaderPrecedence, "SetBulk", 0, 1, "bulk") checkGenHeader(t, message, HeaderXAutoResponseSuppress, "Bulk", 0, 1, "All") } func TestMsg_SetDate(t *testing.T) { t.Run("SetDate and compare date down to the minute", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetDate() values, ok := message.genHeader[HeaderDate] if !ok { t.Fatal("failed to set SetDate, genHeader field is not set") } if len(values) != 1 { t.Fatalf("failed to set SetDate, genHeader value count is: %d, want: %d", len(values), 1) } date := values[0] parsed, err := time.Parse(time.RFC1123Z, date) if err != nil { t.Fatalf("SetDate failed, failed to parse retrieved date: %s, error: %s", date, err) } now := time.Now() nowNoSec := time.Date(now.Year(), now.Month(), now.Day(), now.Hour(), now.Minute(), 0, 0, now.Location()) parsedNoSec := time.Date(parsed.Year(), parsed.Month(), parsed.Day(), parsed.Hour(), parsed.Minute(), 0, 0, parsed.Location()) if !nowNoSec.Equal(parsedNoSec) { t.Errorf("SetDate failed, retrieved date mismatch, got: %s, want: %s", parsedNoSec.String(), nowNoSec.String()) } }) } func TestMsg_SetDateWithValue(t *testing.T) { t.Run("SetDateWithValue and compare date down to the second", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } now := time.Now() message.SetDateWithValue(now) values, ok := message.genHeader[HeaderDate] if !ok { t.Fatal("failed to set SetDate, genHeader field is not set") } if len(values) != 1 { t.Fatalf("failed to set SetDate, genHeader value count is: %d, want: %d", len(values), 1) } date := values[0] parsed, err := time.Parse(time.RFC1123Z, date) if err != nil { t.Fatalf("SetDate failed, failed to parse retrieved date: %s, error: %s", date, err) } if !strings.EqualFold(parsed.Format(time.RFC1123Z), now.Format(time.RFC1123Z)) { t.Errorf("SetDate failed, retrieved date mismatch, got: %s, want: %s", now.Format(time.RFC1123Z), parsed.Format(time.RFC1123Z)) } }) } func TestMsg_SetImportance(t *testing.T) { tests := []struct { name string importance Importance }{ {"Non-Urgent", ImportanceNonUrgent}, {"Low", ImportanceLow}, {"Normal", ImportanceNormal}, {"High", ImportanceHigh}, {"Urgent", ImportanceUrgent}, {"Unknown", 9}, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetImportance(tt.importance) if tt.importance == ImportanceNormal { t.Log("ImportanceNormal is does currently not set any values") return } checkGenHeader(t, message, HeaderImportance, "SetImportance", 0, 1, tt.importance.String()) checkGenHeader(t, message, HeaderPriority, "SetImportance", 0, 1, tt.importance.NumString()) checkGenHeader(t, message, HeaderXPriority, "SetImportance", 0, 1, tt.importance.XPrioString()) checkGenHeader(t, message, HeaderXMSMailPriority, "SetImportance", 0, 1, tt.importance.NumString()) }) } } func TestMsg_SetOrganization(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetOrganization("ACME Inc.") checkGenHeader(t, message, HeaderOrganization, "SetOrganization", 0, 1, "ACME Inc.") } func TestMsg_SetUserAgent(t *testing.T) { t.Run("SetUserAgent with value", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetUserAgent("go-mail test suite") checkGenHeader(t, message, HeaderUserAgent, "SetUserAgent", 0, 1, "go-mail test suite") checkGenHeader(t, message, HeaderXMailer, "SetUserAgent", 0, 1, "go-mail test suite") }) t.Run("Message without SetUserAgent should provide default agent", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } want := fmt.Sprintf("go-mail v%s // https://github.com/wneessen/go-mail", VERSION) message.checkUserAgent() checkGenHeader(t, message, HeaderUserAgent, "SetUserAgent", 0, 1, want) checkGenHeader(t, message, HeaderXMailer, "SetUserAgent", 0, 1, want) }) } func TestMsg_IsDelivered(t *testing.T) { t.Run("IsDelivered on unsent message", func(t *testing.T) { message := testMessage(t) if message.IsDelivered() { t.Error("IsDelivered on unsent message should return false") } }) t.Run("IsDelivered on sent message", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err != nil { var netErr net.Error if errors.As(err, &netErr) && netErr.Timeout() { t.Skip("failed to connect to the test server due to timeout") } t.Fatalf("failed to connect to test server: %s", err) } t.Cleanup(func() { if err := client.Close(); err != nil { t.Errorf("failed to close client: %s", err) } }) if !message.IsDelivered() { t.Error("IsDelivered on sent message should return true") } }) t.Run("IsDelivered on failed message delivery (DATA close)", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailOnDataClose: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } if message.IsDelivered() { t.Error("IsDelivered on failed message delivery should return false") } }) t.Run("IsDelivered on failed message delivery (final RESET)", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailOnReset: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } if !message.IsDelivered() { t.Error("IsDelivered on sent message should return true") } }) } func TestMsg_RequestMDNTo(t *testing.T) { t.Run("RequestMDNTo with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNTo", 0, 1, "") }) t.Run("RequestMDNTo with valid address and nil-genHeader", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.genHeader = nil if err := message.RequestMDNTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNTo", 0, 1, "") }) t.Run("RequestMDNTo with multiple valid addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNTo", 0, 2, "") checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNTo", 1, 2, "") }) t.Run("RequestMDNTo with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("invalid"); err == nil { t.Fatalf("RequestMDNTo should fail with invalid address") } }) t.Run("RequestMDNTo with empty string should fail", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo(""); err == nil { t.Fatalf("RequestMDNTo should fail with invalid address") } }) t.Run("RequestMDNTo with different RFC5322 addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range rfc5322Test { t.Run(tt.value, func(t *testing.T) { err := message.RequestMDNTo(tt.value) if err != nil && tt.valid { t.Errorf("RequestMDNTo on address %s should succeed, but failed with: %s", tt.value, err) } if err == nil && !tt.valid { t.Errorf("RequestMDNTo on address %s should fail, but succeeded", tt.value) } }) } }) } func TestMsg_RequestMDNToFormat(t *testing.T) { t.Run("RequestMDNToFormat with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNToFormat("Toni Tester", "toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNToFormat: %s", err) } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNToFormat", 0, 1, `"Toni Tester" `) }) t.Run("RequestMDNToFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNToFormat("invalid", "invalid"); err == nil { t.Fatalf("RequestMDNToFormat should fail with invalid address") } }) } func TestMsg_RequestMDNAddTo(t *testing.T) { t.Run("RequestMDNAddTo with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } if err := message.RequestMDNAddTo("tina.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNAddTo: %s", err) } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNAddTo", 0, 2, ``) checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNAddTo", 1, 2, ``) }) t.Run("RequestMDNAddTo with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } if err := message.RequestMDNAddTo("invalid"); err == nil { t.Errorf("RequestMDNAddTo should fail with invalid address") } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNAddTo", 0, 1, ``) }) } func TestMsg_RequestMDNAddToFormat(t *testing.T) { t.Run("RequestMDNAddToFormat with valid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } if err := message.RequestMDNAddToFormat("Tina Tester", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNAddToFormat: %s", err) } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNAddToFormat", 0, 2, ``) checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNAddToFormat", 1, 2, `"Tina Tester" `) }) t.Run("RequestMDNAddToFormat with invalid address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.RequestMDNTo("toni.tester@example.com"); err != nil { t.Fatalf("failed to set RequestMDNTo: %s", err) } if err := message.RequestMDNAddToFormat("invalid", "invalid"); err == nil { t.Errorf("RequestMDNAddToFormat should fail with invalid address") } checkGenHeader(t, message, HeaderDispositionNotificationTo, "RequestMDNAddToFormat", 0, 1, ``) }) } func TestMsg_GetSender(t *testing.T) { t.Run("GetSender with envelope from only (no full address)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom("toni.tester@example.com"); err != nil { t.Fatalf("failed to set envelope from address: %s", err) } sender, err := message.GetSender(false) if err != nil { t.Errorf("failed to get sender: %s", err) } if !strings.EqualFold(sender, "toni.tester@example.com") { t.Errorf("expected sender not returned. Want: %s, got: %s", "toni.tester@example.com", sender) } }) t.Run("GetSender with envelope from only (full address)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom("toni.tester@example.com"); err != nil { t.Fatalf("failed to set envelope from address: %s", err) } sender, err := message.GetSender(true) if err != nil { t.Errorf("failed to get sender: %s", err) } if !strings.EqualFold(sender, "") { t.Errorf("expected sender not returned. Want: %s, got: %s", "", sender) } }) t.Run("GetSender with from only (no full address)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } sender, err := message.GetSender(false) if err != nil { t.Errorf("failed to get sender: %s", err) } if !strings.EqualFold(sender, "toni.tester@example.com") { t.Errorf("expected sender not returned. Want: %s, got: %s", "toni.tester@example.com", sender) } }) t.Run("GetSender with from only (full address)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } sender, err := message.GetSender(true) if err != nil { t.Errorf("failed to get sender: %s", err) } if !strings.EqualFold(sender, "") { t.Errorf("expected sender not returned. Want: %s, got: %s", "", sender) } }) t.Run("GetSender with envelope from and from (no full address)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom("toni.tester@example.com"); err != nil { t.Fatalf("failed to set envelope from address: %s", err) } if err := message.From("tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } sender, err := message.GetSender(false) if err != nil { t.Errorf("failed to get sender: %s", err) } if !strings.EqualFold(sender, "toni.tester@example.com") { t.Errorf("expected sender not returned. Want: %s, got: %s", "toni.tester@example.com", sender) } }) t.Run("GetSender with envelope from and from (full address)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EnvelopeFrom("toni.tester@example.com"); err != nil { t.Fatalf("failed to set envelope from address: %s", err) } if err := message.From("tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } sender, err := message.GetSender(true) if err != nil { t.Errorf("failed to get sender: %s", err) } if !strings.EqualFold(sender, "") { t.Errorf("expected sender not returned. Want: %s, got: %s", "", sender) } }) t.Run("GetSender with no envelope from or from", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } _, err := message.GetSender(false) if err == nil { t.Errorf("GetSender with no envelope from or from should return error") } if !errors.Is(err, ErrNoFromAddress) { t.Errorf("GetSender with no envelope from or from should return error. Want: %s, got: %s", ErrNoFromAddress, err) } }) } func TestMsg_GetRecipients(t *testing.T) { t.Run("GetRecipients with only to", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set to address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 1 { t.Fatalf("expected 1 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } }) t.Run("GetRecipients with only cc", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set cc address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 1 { t.Fatalf("expected 1 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } }) t.Run("GetRecipients with only bcc", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set bcc address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 1 { t.Fatalf("expected 1 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } }) t.Run("GetRecipients with to and cc", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set to address: %s", err) } if err := message.Cc("tina.tester@example.com"); err != nil { t.Fatalf("failed to set cc address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 2 { t.Fatalf("expected 2 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } if !strings.EqualFold(rcpts[1], "tina.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "tina.tester@example.com", rcpts[1]) } }) t.Run("GetRecipients with to and bcc", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set to address: %s", err) } if err := message.Bcc("tina.tester@example.com"); err != nil { t.Fatalf("failed to set bcc address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 2 { t.Fatalf("expected 2 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } if !strings.EqualFold(rcpts[1], "tina.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "tina.tester@example.com", rcpts[1]) } }) t.Run("GetRecipients with cc and bcc", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set cc address: %s", err) } if err := message.Bcc("tina.tester@example.com"); err != nil { t.Fatalf("failed to set bcc address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 2 { t.Fatalf("expected 2 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } if !strings.EqualFold(rcpts[1], "tina.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "tina.tester@example.com", rcpts[1]) } }) t.Run("GetRecipients with to, cc and bcc", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set to address: %s", err) } if err := message.Cc("tina.tester@example.com"); err != nil { t.Fatalf("failed to set cc address: %s", err) } if err := message.Bcc("tom.tester@example.com"); err != nil { t.Fatalf("failed to set bcc address: %s", err) } rcpts, err := message.GetRecipients() if err != nil { t.Errorf("failed to get recipients: %s", err) } if len(rcpts) != 3 { t.Fatalf("expected 3 recipient, got: %d", len(rcpts)) } if !strings.EqualFold(rcpts[0], "toni.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "toni.tester@example.com", rcpts[0]) } if !strings.EqualFold(rcpts[1], "tina.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "tina.tester@example.com", rcpts[1]) } if !strings.EqualFold(rcpts[2], "tom.tester@example.com") { t.Errorf("expected recipient not returned. Want: %s, got: %s", "tina.tester@example.com", rcpts[2]) } }) t.Run("GetRecipients with no recipients", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } _, err := message.GetRecipients() if err == nil { t.Errorf("expected error, got nil") } if !errors.Is(err, ErrNoRcptAddresses) { t.Errorf("expected ErrNoRcptAddresses, got: %s", err) } }) } func TestMsg_GetAddrHeader(t *testing.T) { t.Run("GetAddrHeader with valid address (from)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set header: %s", err) } addrheader := message.GetAddrHeader(HeaderFrom) if len(addrheader) != 1 { t.Errorf("expected 1 address, got: %d", len(addrheader)) } if addrheader[0] == nil { t.Fatalf("expected address, got nil") } if addrheader[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[0].String()) } }) t.Run("GetAddrHeader with valid address (to, cc, bcc)", func(t *testing.T) { var fn func(...string) error for _, tt := range addrHeaderTests { message := NewMsg() if message == nil { t.Fatal("message is nil") } switch tt.header { case HeaderFrom: continue case HeaderTo: fn = message.To case HeaderCc: fn = message.Cc case HeaderBcc: fn = message.Bcc default: t.Logf("header %s not supported", tt.header) continue } t.Run(tt.name, func(t *testing.T) { if err := fn("toni.tester@example.com"); err != nil { t.Fatalf("failed to set header: %s", err) } addrheader := message.GetAddrHeader(tt.header) if len(addrheader) != 1 { t.Errorf("expected 1 address, got: %d", len(addrheader)) } if addrheader[0] == nil { t.Fatalf("expected address, got nil") } if addrheader[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[0].String()) } }) } }) t.Run("GetAddrHeader with multiple valid address (to, cc, bcc)", func(t *testing.T) { var fn func(...string) error var addfn func(string) error for _, tt := range addrHeaderTests { message := NewMsg() if message == nil { t.Fatal("message is nil") } switch tt.header { case HeaderFrom: continue case HeaderTo: fn = message.To addfn = message.AddTo case HeaderCc: fn = message.Cc addfn = message.AddCc case HeaderBcc: fn = message.Bcc addfn = message.AddBcc default: t.Logf("header %s not supported", tt.header) continue } t.Run(tt.name, func(t *testing.T) { if err := fn("toni.tester@example.com"); err != nil { t.Fatalf("failed to set header: %s", err) } if err := addfn("tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional header value: %s", err) } addrheader := message.GetAddrHeader(tt.header) if len(addrheader) != 2 { t.Errorf("expected 1 address, got: %d", len(addrheader)) } if addrheader[0] == nil { t.Fatalf("expected address, got nil") } if addrheader[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[0].String()) } if addrheader[1] == nil { t.Fatalf("expected address, got nil") } if addrheader[1].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[1].String()) } }) } }) t.Run("GetAddrHeader with no addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { addrheader := message.GetAddrHeader(HeaderFrom) if len(addrheader) != 0 { t.Errorf("expected 0 address, got: %d", len(addrheader)) } }) } }) } func TestMsg_GetAddrHeaderString(t *testing.T) { t.Run("GetAddrHeaderString with valid address (from)", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set header: %s", err) } addrheader := message.GetAddrHeaderString(HeaderFrom) if len(addrheader) != 1 { t.Errorf("expected 1 address, got: %d", len(addrheader)) } if addrheader[0] == "" { t.Fatalf("expected address, got empty string") } if addrheader[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[0]) } }) t.Run("GetAddrHeaderString with valid address (to, cc, bcc)", func(t *testing.T) { var fn func(...string) error for _, tt := range addrHeaderTests { message := NewMsg() if message == nil { t.Fatal("message is nil") } switch tt.header { case HeaderFrom: continue case HeaderTo: fn = message.To case HeaderCc: fn = message.Cc case HeaderBcc: fn = message.Bcc default: t.Logf("header %s not supported", tt.header) continue } t.Run(tt.name, func(t *testing.T) { if err := fn("toni.tester@example.com"); err != nil { t.Fatalf("failed to set header: %s", err) } addrheader := message.GetAddrHeaderString(tt.header) if len(addrheader) != 1 { t.Errorf("expected 1 address, got: %d", len(addrheader)) } if addrheader[0] == "" { t.Fatalf("expected address, got empty string") } if addrheader[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[0]) } }) } }) t.Run("GetAddrHeaderString with multiple valid address (to, cc, bcc)", func(t *testing.T) { var fn func(...string) error var addfn func(string) error for _, tt := range addrHeaderTests { message := NewMsg() if message == nil { t.Fatal("message is nil") } switch tt.header { case HeaderFrom: continue case HeaderTo: fn = message.To addfn = message.AddTo case HeaderCc: fn = message.Cc addfn = message.AddCc case HeaderBcc: fn = message.Bcc addfn = message.AddBcc default: t.Logf("header %s not supported", tt.header) continue } t.Run(tt.name, func(t *testing.T) { if err := fn("toni.tester@example.com"); err != nil { t.Fatalf("failed to set header: %s", err) } if err := addfn("tina.tester@example.com"); err != nil { t.Fatalf("failed to set additional header value: %s", err) } addrheader := message.GetAddrHeaderString(tt.header) if len(addrheader) != 2 { t.Errorf("expected 1 address, got: %d", len(addrheader)) } if addrheader[0] == "" { t.Fatalf("expected address, got empty string") } if addrheader[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[0]) } if addrheader[1] == "" { t.Fatalf("expected address, got nil") } if addrheader[1] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addrheader[1]) } }) } }) t.Run("GetAddrHeaderString with no addresses", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range addrHeaderTests { t.Run(tt.name, func(t *testing.T) { addrheader := message.GetAddrHeaderString(HeaderFrom) if len(addrheader) != 0 { t.Errorf("expected 0 address, got: %d", len(addrheader)) } }) } }) } func TestMsg_GetFrom(t *testing.T) { t.Run("GetFrom with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetFrom() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } }) t.Run("GetFrom with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetFrom() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetFromString(t *testing.T) { t.Run("GetFromString with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetFromString() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0]) } }) t.Run("GetFromString with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetFromString() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetTo(t *testing.T) { t.Run("GetTo with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetTo() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } }) t.Run("GetTo with multiple address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetTo() if len(addresses) != 2 { t.Fatalf("expected 2 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } if addresses[1] == nil { t.Fatalf("expected address, got nil") } if addresses[1].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[1].String()) } }) t.Run("GetTo with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetTo() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetToString(t *testing.T) { t.Run("GetToString with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetToString() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("GetToString: expected address not returned. Want: %s, got: %s", "", addresses[0]) } }) t.Run("GetToString with multiple address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.To("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetToString() if len(addresses) != 2 { t.Fatalf("expected 2 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0]) } if addresses[1] == "" { t.Fatalf("expected address, got nil") } if addresses[1] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[1]) } }) t.Run("GetToString with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetToString() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetCc(t *testing.T) { t.Run("GetCc with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetCc() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } }) t.Run("GetCc with multiple address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetCc() if len(addresses) != 2 { t.Fatalf("expected 2 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } if addresses[1] == nil { t.Fatalf("expected address, got nil") } if addresses[1].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[1].String()) } }) t.Run("GetCc with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetCc() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetCcString(t *testing.T) { t.Run("GetCcString with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetCcString() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0]) } }) t.Run("GetCcString with multiple address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Cc("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetCcString() if len(addresses) != 2 { t.Fatalf("expected 2 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0]) } if addresses[1] == "" { t.Fatalf("GetCcString: expected address, got nil") } if addresses[1] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[1]) } }) t.Run("GetCcString with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetCcString() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetBcc(t *testing.T) { t.Run("GetBcc with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetBcc() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } }) t.Run("GetBcc with multiple address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetBcc() if len(addresses) != 2 { t.Fatalf("expected 2 address, got: %d", len(addresses)) } if addresses[0] == nil { t.Fatalf("expected address, got nil") } if addresses[0].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0].String()) } if addresses[1] == nil { t.Fatalf("expected address, got nil") } if addresses[1].String() != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[1].String()) } }) t.Run("GetBcc with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetBcc() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetBccString(t *testing.T) { t.Run("GetBccString with address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetBccString() if len(addresses) != 1 { t.Fatalf("expected 1 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0]) } }) t.Run("GetBccString with multiple address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.Bcc("toni.tester@example.com", "tina.tester@example.com"); err != nil { t.Fatalf("failed to set from address: %s", err) } addresses := message.GetBccString() if len(addresses) != 2 { t.Fatalf("expected 2 address, got: %d", len(addresses)) } if addresses[0] == "" { t.Fatalf("expected address, got nil") } if addresses[0] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[0]) } if addresses[1] == "" { t.Fatalf("expected address, got nil") } if addresses[1] != "" { t.Errorf("expected address not returned. Want: %s, got: %s", "", addresses[1]) } }) t.Run("GetBccString with no address", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } addresses := message.GetBccString() if len(addresses) != 0 { t.Errorf("expected 0 address, got: %d", len(addresses)) } }) } func TestMsg_GetGenHeader(t *testing.T) { t.Run("GetGenHeader with single value", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { message.SetGenHeader(tt.header, "test") values := message.GetGenHeader(tt.header) if len(values) != 1 { t.Errorf("expected 1 value, got: %d", len(values)) } if values[0] != "test" { t.Errorf("expected value not returned. Want: %s, got: %s", "test", values[0]) } }) } }) t.Run("GetGenHeader with multiple values", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { message.SetGenHeader(tt.header, "test", "foobar") values := message.GetGenHeader(tt.header) if len(values) != 2 { t.Errorf("expected 1 value, got: %d", len(values)) } if values[0] != "test" { t.Errorf("expected value not returned. Want: %s, got: %s", "test", values[0]) } if values[1] != "foobar" { t.Errorf("expected value not returned. Want: %s, got: %s", "foobar", values[1]) } }) } }) t.Run("GetGenHeader with nil", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } for _, tt := range genHeaderTests { t.Run(tt.name, func(t *testing.T) { message.SetGenHeader(tt.header) values := message.GetGenHeader(tt.header) if len(values) != 0 { t.Errorf("expected 1 value, got: %d", len(values)) } }) } }) } func TestMsg_GetParts(t *testing.T) { t.Run("GetParts with single part", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyString(TypeTextPlain, "this is a test body") parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatalf("expected part, got nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be TypeTextPlain, got: %s", parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "this is a test body") { t.Errorf("expected message body to be %s, got: %s", "this is a test body", messageBuf.String()) } }) t.Run("GetParts with multiple parts", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyString(TypeTextPlain, "this is a test body") message.AddAlternativeString(TypeTextHTML, "

This is HTML

") parts := message.GetParts() if len(parts) != 2 { t.Fatalf("expected 2 parts, got: %d", len(parts)) } if parts[0] == nil || parts[1] == nil { t.Fatalf("expected parts, got nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be TypeTextPlain, got: %s", parts[0].contentType) } if parts[1].contentType != TypeTextHTML { t.Errorf("expected contentType to be TypeTextHTML, got: %s", parts[1].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "this is a test body") { t.Errorf("expected message body to be %s, got: %s", "this is a test body", messageBuf.String()) } messageBuf.Reset() _, err = parts[1].writeFunc(messageBuf) if err != nil { t.Errorf("GetParts: writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "

This is HTML

") { t.Errorf("expected message body to be %s, got: %s", "

This is HTML

", messageBuf.String()) } }) t.Run("GetParts with no parts", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } parts := message.GetParts() if len(parts) != 0 { t.Fatalf("expected no parts, got: %d", len(parts)) } }) } func TestMsg_GetAttachments(t *testing.T) { t.Run("GetAttachments with single attachment", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AttachFile("testdata/attachment.txt") attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("expected 1 attachment, got: %d", len(attachments)) } if attachments[0] == nil { t.Fatalf("expected attachment, got nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("GetAttachments with multiple attachments", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AttachFile("testdata/attachment.txt") message.AttachFile("testdata/attachment.txt", WithFileName("attachment2.txt")) attachments := message.GetAttachments() if len(attachments) != 2 { t.Fatalf("expected 2 attachment, got: %d", len(attachments)) } if attachments[0] == nil || attachments[1] == nil { t.Fatalf("expected attachment, got nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } if attachments[1].Name != "attachment2.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment2.txt", attachments[1].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } messageBuf.Reset() _, err = attachments[1].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got = strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("GetAttachments with no attachment", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } attachments := message.GetAttachments() if len(attachments) != 0 { t.Fatalf("expected 1 attachment, got: %d", len(attachments)) } }) } func TestMsg_GetBoundary(t *testing.T) { t.Run("GetBoundary", func(t *testing.T) { message := NewMsg(WithBoundary("test")) if message == nil { t.Fatal("message is nil") } if message.GetBoundary() != "test" { t.Errorf("expected %s, got: %s", "test", message.GetBoundary()) } }) t.Run("GetBoundary with no boundary", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if message.GetBoundary() != "" { t.Errorf("expected empty, got: %s", message.GetBoundary()) } }) } func TestMsg_SetAttachments(t *testing.T) { t.Run("SetAttachments with single file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "attachment.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test attachment")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetAttachments([]*File{file}) attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("expected 1 attachment, got: %d", len(attachments)) } if attachments[0] == nil { t.Fatalf("expected attachment, got nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("SetAttachments with multiple files", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file1 := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "attachment.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test attachment")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } file2 := &File{ ContentType: TypeTextPlain, Desc: "Test file no. 2", Name: "attachment2.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is also a test attachment")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetAttachments([]*File{file1, file2}) attachments := message.GetAttachments() if len(attachments) != 2 { t.Fatalf("expected 2 attachment, got: %d", len(attachments)) } if attachments[0] == nil || attachments[1] == nil { t.Fatalf("expected attachment, got nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } if attachments[1].Name != "attachment2.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment2.txt", attachments[1].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(messageBuf.String(), "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } messageBuf.Reset() _, err = attachments[1].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got = strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is also a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is also a test attachment", got) } }) t.Run("SetAttachments with no file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetAttachments(nil) attachments := message.GetAttachments() if len(attachments) != 0 { t.Fatalf("expected 0 attachment, got: %d", len(attachments)) } }) } func TestMsg_SetAttachements(t *testing.T) { message := NewMsg() //goland:noinspection GoDeprecation message.SetAttachements(nil) t.Log("SetAttachements is deprecated and fully tested by SetAttachments already") } func TestMsg_UnsetAllAttachments(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file1 := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "attachment.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test attachment")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } file2 := &File{ ContentType: TypeTextPlain, Desc: "Test file no. 2", Name: "attachment2.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is also a test attachment")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetAttachments([]*File{file1, file2}) message.UnsetAllAttachments() if message.attachments != nil { t.Errorf("expected attachments to be nil, got: %v", message.attachments) } attachments := message.GetAttachments() if len(attachments) != 0 { t.Fatalf("expected 0 attachment, got: %d", len(attachments)) } } func TestMsg_GetEmbeds(t *testing.T) { t.Run("GetEmbeds with single embed", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.EmbedFile("testdata/embed.txt") embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("expected 1 embed, got: %d", len(embeds)) } if embeds[0] == nil { t.Fatalf("expected embed, got nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("Writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("GetEmbeds with multiple embeds", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.EmbedFile("testdata/embed.txt") message.EmbedFile("testdata/embed.txt", WithFileName("embed2.txt")) embeds := message.GetEmbeds() if len(embeds) != 2 { t.Fatalf("expected 2 embed, got: %d", len(embeds)) } if embeds[0] == nil || embeds[1] == nil { t.Fatalf("expected embed, got nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } if embeds[1].Name != "embed2.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed2.txt", embeds[1].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("Writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } messageBuf.Reset() _, err = embeds[1].Writer(messageBuf) if err != nil { t.Errorf("Writer func failed: %s", err) } got = strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("GetEmbeds with no embeds", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } embeds := message.GetEmbeds() if len(embeds) != 0 { t.Fatalf("expected 1 embeds, got: %d", len(embeds)) } }) } func TestMsg_SetEmbeds(t *testing.T) { t.Run("SetEmbeds with single file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "embed.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetEmbeds([]*File{file}) embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("expected 1 embed, got: %d", len(embeds)) } if embeds[0] == nil { t.Fatalf("expected embed, got nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("Writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("SetEmbeds with multiple files", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file1 := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "embed.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } file2 := &File{ ContentType: TypeTextPlain, Desc: "Test file no. 2", Name: "embed2.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is also a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetEmbeds([]*File{file1, file2}) embeds := message.GetEmbeds() if len(embeds) != 2 { t.Fatalf("expected 2 embed, got: %d", len(embeds)) } if embeds[0] == nil || embeds[1] == nil { t.Fatalf("expected embed, got nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } if embeds[1].Name != "embed2.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed2.txt", embeds[1].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("Writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } messageBuf.Reset() _, err = embeds[1].Writer(messageBuf) if err != nil { t.Errorf("Writer func failed: %s", err) } got = strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is also a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is also a test embed", got) } }) t.Run("SetEmbeds with no file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetEmbeds(nil) embeds := message.GetEmbeds() if len(embeds) != 0 { t.Fatalf("expected 0 embed, got: %d", len(embeds)) } }) } func TestMsg_UnsetAllEmbeds(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file1 := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "embed.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } file2 := &File{ ContentType: TypeTextPlain, Desc: "Test file no. 2", Name: "embed2.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is also a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetEmbeds([]*File{file1, file2}) message.UnsetAllEmbeds() if message.embeds != nil { t.Errorf("expected embeds to be nil, got: %v", message.embeds) } embeds := message.GetEmbeds() if len(embeds) != 0 { t.Fatalf("expected 0 embed, got: %d", len(embeds)) } } func TestMsg_UnsetAllParts(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file1 := &File{ ContentType: TypeTextPlain, Desc: "Test file", Name: "embed.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } file2 := &File{ ContentType: TypeTextPlain, Desc: "Test file no. 2", Name: "embed2.txt", Writer: func(w io.Writer) (int64, error) { buf := bytes.NewBuffer([]byte("This is also a test embed")) n, err := w.Write(buf.Bytes()) return int64(n), err }, } message.SetAttachments([]*File{file1}) message.SetEmbeds([]*File{file2}) message.UnsetAllParts() if message.embeds != nil || message.attachments != nil { t.Error("expected attachments/embeds to be nil, got: value") } embeds := message.GetEmbeds() if len(embeds) != 0 { t.Fatalf("expected 0 embed, got: %d", len(embeds)) } attachments := message.GetAttachments() if len(attachments) != 0 { t.Fatalf("expected 0 attachments, got: %d", len(attachments)) } } func TestMsg_SetBodyString(t *testing.T) { t.Run("SetBodyString on all types", func(t *testing.T) { for _, tt := range contentTypeTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyString(tt.ctype, "test") parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != tt.ctype { t.Errorf("expected contentType to be %s, got: %s", tt.ctype, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) } func TestMsg_SetBodyWriter(t *testing.T) { writerFunc := func(w io.Writer) (int64, error) { buffer := bytes.NewBufferString("test") n, err := w.Write(buffer.Bytes()) return int64(n), err } t.Run("SetBodyWriter on all types", func(t *testing.T) { for _, tt := range contentTypeTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyWriter(tt.ctype, writerFunc) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != tt.ctype { t.Errorf("expected contentType to be %s, got: %s", tt.ctype, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) t.Run("SetBodyWriter WithPartCharset", func(t *testing.T) { for _, tt := range charsetTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyWriter(TypeTextPlain, writerFunc, WithPartCharset(tt.value)) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].charset != tt.value { t.Errorf("expected charset to be %s, got: %s", tt.value, parts[0].charset) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) t.Run("SetBodyWriter WithPartEncoding", func(t *testing.T) { for _, tt := range encodingTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyWriter(TypeTextPlain, writerFunc, WithPartEncoding(tt.value)) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != tt.value { t.Errorf("expected encoding to be %s, got: %s", tt.value, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) t.Run("SetBodyWriter WithPartContentDescription", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyWriter(TypeTextPlain, writerFunc, WithPartContentDescription("description")) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].description != "description" { t.Errorf("expected description to be %s, got: %s", "description", parts[0].description) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) t.Run("SetBodyWriter with nil option", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyWriter(TypeTextPlain, writerFunc, nil) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } func TestMsg_SetBodyHTMLTemplate(t *testing.T) { tplString := `

{{.teststring}}

` invalidTplString := `

{{call $.invalid .teststring}}

` data := map[string]interface{}{"teststring": "this is a test"} htmlTpl, err := ht.New("htmltpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse HTML template: %s", err) } invalidTpl, err := ht.New("htmltpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid HTML template: %s", err) } t.Run("SetBodyHTMLTemplate default", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.SetBodyHTMLTemplate(htmlTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextHTML { t.Errorf("expected contentType to be %s, got: %s", TypeTextHTML, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "

this is a test

") { t.Errorf("expected message body to be %s, got: %s", "

this is a test

", messageBuf.String()) } }) t.Run("SetBodyHTMLTemplate with nil tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.SetBodyHTMLTemplate(nil, nil) if err == nil { t.Fatal("expected error, got nil") } if !strings.EqualFold(err.Error(), errTplPointerNil) { t.Errorf("expected error to be %s, got: %s", errTplPointerNil, err.Error()) } }) t.Run("SetBodyHTMLTemplate with invalid tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.SetBodyHTMLTemplate(invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to execute template: template: htmltpl:1:5: executing "htmltpl" at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) } func TestMsg_SetBodyTextTemplate(t *testing.T) { tplString := `Teststring: {{.teststring}}` invalidTplString := `Teststring: {{call $.invalid .teststring}}` data := map[string]interface{}{"teststring": "this is a test"} textTpl, err := ttpl.New("texttpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse Text template: %s", err) } invalidTpl, err := ttpl.New("texttpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid Text template: %s", err) } t.Run("SetBodyTextTemplate default", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.SetBodyTextTemplate(textTpl, data); err != nil { t.Fatalf("failed to set body text template: %s", err) } parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "Teststring: this is a test") { t.Errorf("expected message body to be %s, got: %s", "Teststring: this is a test", messageBuf.String()) } }) t.Run("SetBodyTextTemplate with nil tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.SetBodyTextTemplate(nil, nil) if err == nil { t.Fatal("expected error, got nil") } if !strings.EqualFold(err.Error(), errTplPointerNil) { t.Errorf("expected error to be %s, got: %s", errTplPointerNil, err.Error()) } }) t.Run("SetBodyTextTemplate with invalid tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.SetBodyTextTemplate(invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to execute template: template: texttpl:1:14: executing "texttpl" at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) } func TestMsg_AddAlternativeString(t *testing.T) { t.Run("AddAlternativeString on all types", func(t *testing.T) { for _, tt := range contentTypeTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AddAlternativeString(tt.ctype, "test") parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != tt.ctype { t.Errorf("expected contentType to be %s, got: %s", tt.ctype, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) } func TestMsg_AddAlternativeWriter(t *testing.T) { writerFunc := func(w io.Writer) (int64, error) { buffer := bytes.NewBufferString("test") n, err := w.Write(buffer.Bytes()) return int64(n), err } t.Run("AddAlternativeWriter on all types", func(t *testing.T) { for _, tt := range contentTypeTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AddAlternativeWriter(tt.ctype, writerFunc) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != tt.ctype { t.Errorf("expected contentType to be %s, got: %s", tt.ctype, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) t.Run("AddAlternativeWriter WithPartCharset", func(t *testing.T) { for _, tt := range charsetTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AddAlternativeWriter(TypeTextPlain, writerFunc, WithPartCharset(tt.value)) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].charset != tt.value { t.Errorf("expected charset to be %s, got: %s", tt.value, parts[0].charset) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) t.Run("AddAlternativeWriter WithPartEncoding", func(t *testing.T) { for _, tt := range encodingTests { t.Run(tt.name, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AddAlternativeWriter(TypeTextPlain, writerFunc, WithPartEncoding(tt.value)) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != tt.value { t.Errorf("expected encoding to be %s, got: %s", tt.value, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) } }) t.Run("AddAlternativeWriter WithPartContentDescription", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AddAlternativeWriter(TypeTextPlain, writerFunc, WithPartContentDescription("description")) parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].description != "description" { t.Errorf("expected description to be %s, got: %s", "description", parts[0].description) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "test") { t.Errorf("expected message body to be %s, got: %s", "test", messageBuf.String()) } }) t.Run("AddAlternativeWriter with body string set", func(t *testing.T) { writerFunc = func(w io.Writer) (int64, error) { buffer := bytes.NewBufferString("

alternative body

") n, err := w.Write(buffer.Bytes()) return int64(n), err } message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyString(TypeTextPlain, "body string") message.AddAlternativeWriter(TypeTextHTML, writerFunc) parts := message.GetParts() if len(parts) != 2 { t.Fatalf("expected 2 part, got: %d", len(parts)) } if parts[0] == nil || parts[1] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[1].contentType != TypeTextHTML { t.Errorf("expected alternative contentType to be %s, got: %s", TypeTextHTML, parts[1].contentType) } messageBuf := bytes.NewBuffer(nil) _, err := parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "body string") { t.Errorf("expected message body to be %s, got: %s", "body string", messageBuf.String()) } messageBuf.Reset() _, err = parts[1].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "

alternative body

") { t.Errorf("expected alternative message body to be %s, got: %s", "

alternative body

", messageBuf.String()) } }) } func TestMsg_AddAlternativeHTMLTemplate(t *testing.T) { tplString := `

{{.teststring}}

` invalidTplString := `

{{call $.invalid .teststring}}

` data := map[string]interface{}{"teststring": "this is a test"} htmlTpl, err := ht.New("htmltpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse HTML template: %s", err) } invalidTpl, err := ht.New("htmltpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid HTML template: %s", err) } t.Run("AddAlternativeHTMLTemplate default", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.AddAlternativeHTMLTemplate(htmlTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextHTML { t.Errorf("expected contentType to be %s, got: %s", TypeTextHTML, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "

this is a test

") { t.Errorf("expected message body to be %s, got: %s", "

this is a test

", messageBuf.String()) } }) t.Run("AddAlternativeHTMLTemplate with body string", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyString(TypeTextPlain, "body string") if err = message.AddAlternativeHTMLTemplate(htmlTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } parts := message.GetParts() if len(parts) != 2 { t.Fatalf("expected 2 part, got: %d", len(parts)) } if parts[0] == nil || parts[1] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[1].contentType != TypeTextHTML { t.Errorf("expected contentType to be %s, got: %s", TypeTextHTML, parts[1].contentType) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "body string") { t.Errorf("expected message body to be %s, got: %s", "body string", messageBuf.String()) } messageBuf.Reset() _, err = parts[1].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "

this is a test

") { t.Errorf("expected message body to be %s, got: %s", "

this is a test

", messageBuf.String()) } }) t.Run("AddAlternativeHTMLTemplate with nil tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AddAlternativeHTMLTemplate(nil, nil) if err == nil { t.Fatal("expected error, got nil") } if !strings.EqualFold(err.Error(), errTplPointerNil) { t.Errorf("expected error to be %s, got: %s", errTplPointerNil, err.Error()) } }) t.Run("AddAlternativeHTMLTemplate with invalid tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AddAlternativeHTMLTemplate(invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to execute template: template: htmltpl:1:5: executing "htmltpl" at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) } func TestMsg_AddAlternativeTextTemplate(t *testing.T) { tplString := `Teststring: {{.teststring}}` invalidTplString := `Teststring: {{call $.invalid .teststring}}` data := map[string]interface{}{"teststring": "this is a test"} textTpl, err := ttpl.New("texttpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse Text template: %s", err) } invalidTpl, err := ttpl.New("texttpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid Text template: %s", err) } t.Run("AddAlternativeTextTemplate default", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.AddAlternativeTextTemplate(textTpl, data); err != nil { t.Fatalf("failed to set body text template: %s", err) } parts := message.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 part, got: %d", len(parts)) } if parts[0] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "Teststring: this is a test") { t.Errorf("expected message body to be %s, got: %s", "Teststring: this is a test", messageBuf.String()) } }) t.Run("AddAlternativeTextTemplate with body string", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.SetBodyString(TypeTextPlain, "body string") if err = message.AddAlternativeTextTemplate(textTpl, data); err != nil { t.Fatalf("failed to set body text template: %s", err) } parts := message.GetParts() if len(parts) != 2 { t.Fatalf("expected 2 part, got: %d", len(parts)) } if parts[0] == nil || parts[1] == nil { t.Fatal("expected part to be not nil") } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[1].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[1].contentType) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "body string") { t.Errorf("expected message body to be %s, got: %s", "body string", messageBuf.String()) } messageBuf.Reset() _, err = parts[1].writeFunc(messageBuf) if err != nil { t.Errorf("writeFunc failed: %s", err) } if !strings.EqualFold(messageBuf.String(), "Teststring: this is a test") { t.Errorf("expected message body to be %s, got: %s", "Teststring: this is a test", messageBuf.String()) } }) t.Run("AddAlternativeTextTemplate with nil tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AddAlternativeTextTemplate(nil, nil) if err == nil { t.Fatal("expected error, got nil") } if !strings.EqualFold(err.Error(), errTplPointerNil) { t.Errorf("expected error to be %s, got: %s", errTplPointerNil, err.Error()) } }) t.Run("AddAlternativeTextTemplate with invalid tpl", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AddAlternativeTextTemplate(invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to execute template: template: texttpl:1:14: executing "texttpl" at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) } func TestMsg_AttachFile(t *testing.T) { t.Run("AttachFile with file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AttachFile("testdata/attachment.txt") attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("AttachFile with non-existent file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AttachFile("testdata/non-existent-file.txt") attachments := message.GetAttachments() if len(attachments) != 0 { t.Fatalf("failed to retrieve attachments list") } }) t.Run("AttachFile with options", func(t *testing.T) { t.Log("all options have already been tested in file_test.go") }) t.Run("AttachFile with normal file and nil option", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AttachFile("testdata/attachment.txt", nil) attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("AttachFile with fileFromFS fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.AttachFile("testdata/attachment.txt") attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to get attachments, expected 1, got: %d", len(attachments)) } _, err := attachments[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) } func TestMsg_AttachReader(t *testing.T) { t.Run("AttachReader with file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/attachment.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) if err = message.AttachReader("attachment.txt", file); err != nil { t.Fatalf("failed to attach reader: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("AttachReader with fileFromReader fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/attachment.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) if err = message.AttachReader("attachment.txt", file); err != nil { t.Fatalf("failed to attach reader: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to get attachments, expected 1, got: %d", len(attachments)) } _, err = attachments[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) // Tests the Msg.AttachReader methods with consecutive calls to Msg.WriteTo to make sure // the attachments are not lost. // https://github.com/wneessen/go-mail/issues/110 t.Run("AttachReader with consecutive writes", func(t *testing.T) { teststring := "This is a test string" message := testMessage(t) if err := message.AttachReader("attachment.txt", bytes.NewBufferString(teststring)); err != nil { t.Fatalf("failed to attach teststring buffer: %s", err) } messageBuffer := bytes.NewBuffer(nil) altBuffer := bytes.NewBuffer(nil) // First write n1, err := message.WriteTo(messageBuffer) if err != nil { t.Fatalf("failed to write message to buffer: %s", err) } // Second write n2, err := message.WriteTo(altBuffer) if err != nil { t.Fatalf("failed to write message to alternative buffer: %s", err) } if n1 != n2 { t.Errorf("number of written bytes between consecutive writes differ, got: %d and %d", n1, n2) } if !strings.Contains(messageBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", messageBuffer.String()) } if !strings.Contains(altBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in alternative message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", altBuffer.String()) } }) } func TestMsg_AttachReadSeeker(t *testing.T) { t.Run("AttachReadSeeker with file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/attachment.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) message.AttachReadSeeker("attachment.txt", file) attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("AttachReadSeeker with fileFromReadSeeker fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/attachment.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) message.AttachReadSeeker("attachment.txt", file) attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to get attachments, expected 1, got: %d", len(attachments)) } _, err = attachments[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) // Tests the Msg.AttachReadSeeker methods with consecutive calls to Msg.WriteTo to make sure // the attachments are not lost. // https://github.com/wneessen/go-mail/issues/110 t.Run("AttachReadSeeker with consecutive writes", func(t *testing.T) { teststring := []byte("This is a test string") message := testMessage(t) message.AttachReadSeeker("attachment.txt", bytes.NewReader(teststring)) messageBuffer := bytes.NewBuffer(nil) altBuffer := bytes.NewBuffer(nil) // First write n1, err := message.WriteTo(messageBuffer) if err != nil { t.Fatalf("failed to write message to buffer: %s", err) } // Second write n2, err := message.WriteTo(altBuffer) if err != nil { t.Fatalf("failed to write message to alternative buffer: %s", err) } if n1 != n2 { t.Errorf("number of written bytes between consecutive writes differ, got: %d and %d", n1, n2) } if !strings.Contains(messageBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", messageBuffer.String()) } if !strings.Contains(altBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in alternative message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", altBuffer.String()) } }) } func TestMsg_AttachHTMLTemplate(t *testing.T) { tplString := `

{{.teststring}}

` invalidTplString := `

{{call $.invalid .teststring}}

` data := map[string]interface{}{"teststring": "this is a test"} htmlTpl, err := ht.New("htmltpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse HTML template: %s", err) } invalidTpl, err := ht.New("htmltpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid HTML template: %s", err) } t.Run("AttachHTMLTemplate with valid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.AttachHTMLTemplate("attachment.html", htmlTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.html" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.html", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "

this is a test

") { t.Errorf("expected message body to be %s, got: %s", "

this is a test

", got) } }) t.Run("AttachHTMLTemplate with invalid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AttachHTMLTemplate("attachment.html", invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to attach template: failed to execute template: template: htmltpl:1:5: executing "htmltpl" ` + `at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) t.Run("AttachHTMLTemplate with nil template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AttachHTMLTemplate("attachment.html", nil, data) if err == nil { t.Fatal("expected error, got nil") } expectedErr := `failed to attach template: ` + errTplPointerNil if !strings.EqualFold(err.Error(), expectedErr) { t.Errorf("expected error to be %s, got: %s", expectedErr, err.Error()) } }) } func TestMsg_AttachTextTemplate(t *testing.T) { tplString := `Teststring: {{.teststring}}` invalidTplString := `Teststring: {{call $.invalid .teststring}}` data := map[string]interface{}{"teststring": "this is a test"} textTpl, err := ttpl.New("texttpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse Text template: %s", err) } invalidTpl, err := ttpl.New("texttpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid Text template: %s", err) } t.Run("AttachTextTemplate with valid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.AttachTextTemplate("attachment.txt", textTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "Teststring: this is a test") { t.Errorf("expected message body to be %s, got: %s", "Teststring: this is a test", got) } }) t.Run("AttachTextTemplate with invalid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AttachTextTemplate("attachment.txt", invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to attach template: failed to execute template: template: texttpl:1:14: executing "texttpl" ` + `at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) t.Run("AttachTextTemplate with nil template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.AttachTextTemplate("attachment.html", nil, data) if err == nil { t.Fatal("expected error, got nil") } expectedErr := `failed to attach template: ` + errTplPointerNil if !strings.EqualFold(err.Error(), expectedErr) { t.Errorf("expected error to be %s, got: %s", expectedErr, err.Error()) } }) } func TestMsg_AttachFromEmbedFS(t *testing.T) { t.Run("AttachFromEmbedFS successful", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.AttachFromEmbedFS("testdata/attachment.txt", &efs, WithFileName("attachment.txt")); err != nil { t.Fatalf("failed to attach from embed FS: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("AttachFromEmbedFS with invalid path", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.AttachFromEmbedFS("testdata/invalid.txt", &efs, WithFileName("attachment.txt")) if err == nil { t.Fatal("expected error, got nil") } }) t.Run("AttachFromEmbedFS with nil embed FS", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.AttachFromEmbedFS("testdata/invalid.txt", nil, WithFileName("attachment.txt")) if err == nil { t.Fatal("expected error, got nil") } }) } func TestMsg_AttachFromIOFS(t *testing.T) { t.Run("AttachFromIOFS successful", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.AttachFromIOFS("testdata/attachment.txt", efs, WithFileName("attachment.txt")); err != nil { t.Fatalf("failed to attach from embed FS: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to retrieve attachments list") } if attachments[0] == nil { t.Fatal("expected attachment to be not nil") } if attachments[0].Name != "attachment.txt" { t.Errorf("expected attachment name to be %s, got: %s", "attachment.txt", attachments[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := attachments[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test attachment") { t.Errorf("expected message body to be %s, got: %s", "This is a test attachment", got) } }) t.Run("AttachFromIOFS with invalid path", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.AttachFromIOFS("testdata/invalid.txt", efs, WithFileName("attachment.txt")) if err == nil { t.Fatal("expected error, got nil") } }) t.Run("AttachFromIOFS with nil embed FS", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.AttachFromIOFS("testdata/invalid.txt", nil, WithFileName("attachment.txt")) if err == nil { t.Fatal("expected error, got nil") } }) t.Run("AttachFromIOFS with fs.FS fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.AttachFromIOFS("testdata/attachment.txt", efs); err != nil { t.Fatalf("failed to attach file from fs.FS: %s", err) } attachments := message.GetAttachments() if len(attachments) != 1 { t.Fatalf("failed to get attachments, expected 1, got: %d", len(attachments)) } _, err := attachments[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) } func TestMsg_EmbedFile(t *testing.T) { t.Run("EmbedFile with file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.EmbedFile("testdata/embed.txt") embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("EmbedFile with non-existent file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.EmbedFile("testdata/non-existent-file.txt") embeds := message.GetEmbeds() if len(embeds) != 0 { t.Fatalf("failed to retrieve attachments list") } }) t.Run("EmbedFile with fileFromFS fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } message.EmbedFile("testdata/embed.txt") emebeds := message.GetEmbeds() if len(emebeds) != 1 { t.Fatalf("failed to get emebeds, expected 1, got: %d", len(emebeds)) } _, err := emebeds[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) t.Run("EmbedFile with options", func(t *testing.T) { t.Log("all options have already been tested in file_test.go") }) } func TestMsg_EmbedReader(t *testing.T) { t.Run("EmbedReader with file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/embed.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) if err = message.EmbedReader("embed.txt", file); err != nil { t.Fatalf("failed to embed reader: %s", err) } embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("EmbedReader with fileFromReader fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/embed.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) if err = message.EmbedReader("embed.txt", file); err != nil { t.Fatalf("failed to embed reader: %s", err) } embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to get embeds, expected 1, got: %d", len(embeds)) } _, err = embeds[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) t.Run("EmbedReader with fileFromReader on closed reader", func(t *testing.T) { tempfile, err := os.CreateTemp("", "embedfile-close-reader.*.txt") if err != nil { t.Fatalf("failed to create temp file: %s", err) } if err = tempfile.Close(); err != nil { t.Fatalf("failed to close temp file: %s", err) } t.Cleanup(func() { if err := os.Remove(tempfile.Name()); err != nil { t.Errorf("failed to remove temp file: %s", err) } }) message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.EmbedReader("embed.txt", tempfile); err == nil { t.Fatalf("expected error, got nil") } }) // Tests the Msg.EmbedReader methods with consecutive calls to Msg.WriteTo to make sure // the attachments are not lost. // https://github.com/wneessen/go-mail/issues/110 t.Run("EmbedReader with consecutive writes", func(t *testing.T) { teststring := "This is a test string" message := testMessage(t) if err := message.EmbedReader("embed.txt", bytes.NewBufferString(teststring)); err != nil { t.Fatalf("failed to embed teststring buffer: %s", err) } messageBuffer := bytes.NewBuffer(nil) altBuffer := bytes.NewBuffer(nil) // First write n1, err := message.WriteTo(messageBuffer) if err != nil { t.Fatalf("failed to write message to buffer: %s", err) } // Second write n2, err := message.WriteTo(altBuffer) if err != nil { t.Fatalf("failed to write message to alternative buffer: %s", err) } if n1 != n2 { t.Errorf("number of written bytes between consecutive writes differ, got: %d and %d", n1, n2) } if !strings.Contains(messageBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", messageBuffer.String()) } if !strings.Contains(altBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in alternative message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", altBuffer.String()) } }) } func TestMsg_EmbedReadSeeker(t *testing.T) { t.Run("EmbedReadSeeker with file", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/embed.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) message.EmbedReadSeeker("embed.txt", file) embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("EmbedReadSeeker with fileFromReadSeeker fails on copy", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } file, err := os.Open("testdata/embed.txt") if err != nil { t.Fatalf("failed to open file: %s", err) } t.Cleanup(func() { if err := file.Close(); err != nil { t.Errorf("failed to close file: %s", err) } }) message.EmbedReadSeeker("embed.txt", file) embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to get embeds, expected 1, got: %d", len(embeds)) } _, err = embeds[0].Writer(failReadWriteSeekCloser{}) if err == nil { t.Error("writer func expected to fail, but didn't") } }) // Tests the Msg.EmbedReadSeeker methods with consecutive calls to Msg.WriteTo to make sure // the attachments are not lost. // https://github.com/wneessen/go-mail/issues/110 t.Run("EmbedReadSeeker with consecutive writes", func(t *testing.T) { teststring := []byte("This is a test string") message := testMessage(t) message.EmbedReadSeeker("embed.txt", bytes.NewReader(teststring)) messageBuffer := bytes.NewBuffer(nil) altBuffer := bytes.NewBuffer(nil) // First write n1, err := message.WriteTo(messageBuffer) if err != nil { t.Fatalf("failed to write message to buffer: %s", err) } // Second write n2, err := message.WriteTo(altBuffer) if err != nil { t.Fatalf("failed to write message to alternative buffer: %s", err) } if n1 != n2 { t.Errorf("number of written bytes between consecutive writes differ, got: %d and %d", n1, n2) } if !strings.Contains(messageBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", messageBuffer.String()) } if !strings.Contains(altBuffer.String(), "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n") { t.Errorf("expected string not found in alternative message buffer, want: %s, got: %s", "VGhpcyBpcyBhIHRlc3Qgc3RyaW5n", altBuffer.String()) } }) } func TestMsg_EmbedHTMLTemplate(t *testing.T) { tplString := `

{{.teststring}}

` invalidTplString := `

{{call $.invalid .teststring}}

` data := map[string]interface{}{"teststring": "this is a test"} htmlTpl, err := ht.New("htmltpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse HTML template: %s", err) } invalidTpl, err := ht.New("htmltpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid HTML template: %s", err) } t.Run("EmbedHTMLTemplate with valid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.EmbedHTMLTemplate("embed.html", htmlTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.html" { t.Errorf("expected embed name to be %s, got: %s", "embed.html", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "

this is a test

") { t.Errorf("expected message body to be %s, got: %s", "

this is a test

", got) } }) t.Run("EmbedHTMLTemplate with invalid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.EmbedHTMLTemplate("embed.html", invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to embed template: failed to execute template: template: htmltpl:1:5: executing "htmltpl" ` + `at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) t.Run("EmbedHTMLTemplate with nil template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.EmbedHTMLTemplate("embed.html", nil, data) if err == nil { t.Fatal("expected error, got nil") } expectedErr := `failed to embed template: ` + errTplPointerNil if !strings.EqualFold(err.Error(), expectedErr) { t.Errorf("expected error to be %s, got: %s", expectedErr, err.Error()) } }) } func TestMsg_EmbedTextTemplate(t *testing.T) { tplString := `Teststring: {{.teststring}}` invalidTplString := `Teststring: {{call $.invalid .teststring}}` data := map[string]interface{}{"teststring": "this is a test"} textTpl, err := ttpl.New("texttpl").Parse(tplString) if err != nil { t.Fatalf("failed to parse Text template: %s", err) } invalidTpl, err := ttpl.New("texttpl").Parse(invalidTplString) if err != nil { t.Fatalf("failed to parse invalid Text template: %s", err) } t.Run("EmbedTextTemplate with valid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err = message.EmbedTextTemplate("embed.txt", textTpl, data); err != nil { t.Fatalf("failed to set body HTML template: %s", err) } embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err = embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "Teststring: this is a test") { t.Errorf("expected message body to be %s, got: %s", "Teststring: this is a test", got) } }) t.Run("EmbedTextTemplate with invalid template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.EmbedTextTemplate("embed.txt", invalidTpl, data) if err == nil { t.Fatal("expected error, got nil") } expectErr := `failed to embed template: failed to execute template: template: texttpl:1:14: executing "texttpl" ` + `at : error calling call: call of nil` if !strings.EqualFold(err.Error(), expectErr) { t.Errorf("expected error to be %s, got: %s", expectErr, err.Error()) } }) t.Run("EmbedTextTemplate with nil template", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err = message.EmbedTextTemplate("embed.html", nil, data) if err == nil { t.Fatal("expected error, got nil") } expectedErr := `failed to embed template: ` + errTplPointerNil if !strings.EqualFold(err.Error(), expectedErr) { t.Errorf("expected error to be %s, got: %s", expectedErr, err.Error()) } }) } func TestMsg_EmbedFromEmbedFS(t *testing.T) { t.Run("EmbedFromEmbedFS successful", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EmbedFromEmbedFS("testdata/embed.txt", &efs, WithFileName("embed.txt")); err != nil { t.Fatalf("failed to embed from embed FS: %s", err) } embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("EmbedFromEmbedFS with invalid path", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.EmbedFromEmbedFS("testdata/invalid.txt", &efs, WithFileName("embed.txt")) if err == nil { t.Fatal("expected error, got nil") } }) t.Run("EmbedFromEmbedFS with nil embed FS", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.EmbedFromEmbedFS("testdata/invalid.txt", nil, WithFileName("embed.txt")) if err == nil { t.Fatal("expected error, got nil") } }) } func TestMsg_EmbedFromIOFS(t *testing.T) { t.Run("EmbedFromIOFS successful", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.EmbedFromIOFS("testdata/embed.txt", efs, WithFileName("embed.txt")); err != nil { t.Fatalf("failed to embed from embed FS: %s", err) } embeds := message.GetEmbeds() if len(embeds) != 1 { t.Fatalf("failed to retrieve embeds list") } if embeds[0] == nil { t.Fatal("expected embed to be not nil") } if embeds[0].Name != "embed.txt" { t.Errorf("expected embed name to be %s, got: %s", "embed.txt", embeds[0].Name) } messageBuf := bytes.NewBuffer(nil) _, err := embeds[0].Writer(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.EqualFold(got, "This is a test embed") { t.Errorf("expected message body to be %s, got: %s", "This is a test embed", got) } }) t.Run("EmbedFromIOFS with invalid path", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.EmbedFromIOFS("testdata/invalid.txt", efs, WithFileName("embed.txt")) if err == nil { t.Fatal("expected error, got nil") } }) t.Run("EmbedFromIOFS with nil embed FS", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } err := message.EmbedFromIOFS("testdata/invalid.txt", nil, WithFileName("embed.txt")) if err == nil { t.Fatal("expected error, got nil") } }) } func TestMsg_Reset(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if err := message.From("toni.tester@example.com"); err != nil { t.Fatalf("failed to set From address: %s", err) } if err := message.To("tina.tester@example.com"); err != nil { t.Fatalf("failed to set To address: %s", err) } message.Subject("This is the subject") message.SetBodyString(TypeTextPlain, "This is the body") message.AddAlternativeString(TypeTextPlain, "This is the alternative string") message.EmbedFile("testdata/embed.txt") message.AttachFile("testdata/attach.txt") message.Reset() if len(message.GetFromString()) != 0 { t.Errorf("expected message From address to be empty, got: %+v", message.GetFromString()) } if len(message.GetToString()) != 0 { t.Errorf("expected message To address to be empty, got: %+v", message.GetFromString()) } if len(message.GetGenHeader(HeaderSubject)) != 0 { t.Errorf("expected message Subject to be empty, got: %+v", message.GetGenHeader(HeaderSubject)) } if len(message.GetAttachments()) != 0 { t.Errorf("expected message Attachments to be empty, got: %d", len(message.GetAttachments())) } if len(message.GetEmbeds()) != 0 { t.Errorf("expected message Embeds to be empty, got: %d", len(message.GetEmbeds())) } if len(message.GetParts()) != 0 { t.Errorf("expected message Parts to be empty, got: %d", len(message.GetParts())) } } func TestMsg_applyMiddlewares(t *testing.T) { t.Run("new message with middleware: uppercase", func(t *testing.T) { tests := []struct { subject string want string }{ {"This is test subject", "THIS IS TEST SUBJECT"}, {"This is also a test subject", "THIS IS ALSO A TEST SUBJECT"}, } for _, tt := range tests { t.Run(tt.subject, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if len(message.middlewares) != 0 { t.Errorf("NewMsg() failed. Expected empty middlewares, got: %d", len(message.middlewares)) } message = NewMsg(WithMiddleware(uppercaseMiddleware{})) if len(message.middlewares) != 1 { t.Errorf("NewMsg(WithMiddleware(uppercaseMiddleware{})) failed. Expected 1 middleware, got: %d", len(message.middlewares)) } message.Subject(tt.subject) checkGenHeader(t, message, HeaderSubject, "applyMiddleware", 0, 1, tt.subject) message = message.applyMiddlewares(message) checkGenHeader(t, message, HeaderSubject, "applyMiddleware", 0, 1, tt.want) }) } }) t.Run("new message with middleware: encode", func(t *testing.T) { tests := []struct { subject string want string }{ {"This is a test subject", "This is @ test subject"}, {"This is also a test subject", "This is @lso @ test subject"}, } for _, tt := range tests { t.Run(tt.subject, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if len(message.middlewares) != 0 { t.Errorf("NewMsg() failed. Expected empty middlewares, got: %d", len(message.middlewares)) } message = NewMsg(WithMiddleware(encodeMiddleware{})) if len(message.middlewares) != 1 { t.Errorf("NewMsg(WithMiddleware(encodeMiddleware{})) failed. Expected 1 middleware, got: %d", len(message.middlewares)) } message.Subject(tt.subject) checkGenHeader(t, message, HeaderSubject, "applyMiddleware", 0, 1, tt.subject) message = message.applyMiddlewares(message) checkGenHeader(t, message, HeaderSubject, "applyMiddleware", 0, 1, tt.want) }) } }) t.Run("new message with middleware: uppercase and encode", func(t *testing.T) { tests := []struct { subject string want string }{ {"This is a test subject", "THIS IS @ TEST SUBJECT"}, {"This is also a test subject", "THIS IS @LSO @ TEST SUBJECT"}, } for _, tt := range tests { t.Run(tt.subject, func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("message is nil") } if len(message.middlewares) != 0 { t.Errorf("NewMsg() failed. Expected empty middlewares, got: %d", len(message.middlewares)) } message = NewMsg(WithMiddleware(encodeMiddleware{}), WithMiddleware(uppercaseMiddleware{})) if len(message.middlewares) != 2 { t.Errorf("NewMsg(WithMiddleware(encodeMiddleware{})) failed. Expected 2 middlewares, got: %d", len(message.middlewares)) } message.Subject(tt.subject) checkGenHeader(t, message, HeaderSubject, "applyMiddleware", 0, 1, tt.subject) message = message.applyMiddlewares(message) checkGenHeader(t, message, HeaderSubject, "applyMiddleware", 0, 1, tt.want) }) } }) } func TestMsg_WriteTo(t *testing.T) { t.Run("WriteTo memory buffer with normal mail parts", func(t *testing.T) { message := testMessage(t) buffer := bytes.NewBuffer(nil) if _, err := message.WriteTo(buffer); err != nil { t.Fatalf("failed to write message to buffer: %s", err) } parsed, err := EMLToMsgFromReader(buffer) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "Testmail") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } }) t.Run("WriteTo fails to write", func(t *testing.T) { message := testMessage(t) _, err := message.WriteTo(failReadWriteSeekCloser{}) if err == nil { t.Fatalf("writing to failReadWriteSeekCloser should fail") } if strings.EqualFold(err.Error(), "failed to write message to buffer: intentional write failure") { t.Fatalf("expected error to be: failed to write message to buffer: intentional write failure, got: %s", err) } }) t.Run("WriteTo with long headers", func(t *testing.T) { message := testMessage(t) message.SetGenHeader(HeaderContentLang, "de", "en", "fr", "es", "xxxx", "yyyy", "de", "en", "fr", "es", "xxxx", "yyyy", "de", "en", "fr", "es", "xxxx", "yyyy", "de", "en", "fr") message.SetGenHeader(HeaderContentID, "XXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXX "+ "XXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXX") messageBuffer := bytes.NewBuffer(nil) n, err := message.WriteTo(messageBuffer) if err != nil { t.Fatalf("failed to write message to buffer: %s", err) } if n != int64(messageBuffer.Len()) { t.Errorf("expected written bytes: %d, got: %d", n, messageBuffer.Len()) } }) t.Run("WriteTo with multiple writes", func(t *testing.T) { message := testMessage(t) buffer := bytes.NewBuffer(nil) messageBuf := bytes.NewBuffer(nil) for i := 0; i < 10; i++ { t.Run(fmt.Sprintf("write %d", i), func(t *testing.T) { if _, err := message.WriteTo(buffer); err != nil { t.Fatalf("failed to write message to buffer: %s", err) } parsed, err := EMLToMsgFromReader(buffer) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "Testmail") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } buffer.Reset() }) } }) } func TestMsg_WriteToFile(t *testing.T) { t.Run("WriteToFile with normal mail parts", func(t *testing.T) { tempfile, err := os.CreateTemp("", "testmail.*.eml") if err != nil { t.Fatalf("failed to create temp file: %s", err) } if err = tempfile.Close(); err != nil { t.Fatalf("failed to close temp file: %s", err) } if err = os.Remove(tempfile.Name()); err != nil { t.Fatalf("failed to remove temp file: %s", err) } message := testMessage(t) if err = message.WriteToFile(tempfile.Name()); err != nil { t.Fatalf("failed to write message to tempfile %q: %s", tempfile.Name(), err) } parsed, err := EMLToMsgFromFile(tempfile.Name()) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "Testmail") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } }) } func TestMsg_Write(t *testing.T) { message := testMessage(t) if _, err := message.Write(io.Discard); err != nil { t.Fatalf("failed to write message to io.Discard: %s", err) } t.Log("Write() is just an alias to WriteTo(), which has already been tested.") } func TestMsg_WriteToSkipMiddleware(t *testing.T) { t.Run("WriteToSkipMiddleware with two middlewares, skipping uppercase", func(t *testing.T) { message := NewMsg(WithMiddleware(encodeMiddleware{}), WithMiddleware(uppercaseMiddleware{})) if message == nil { t.Fatal("failed to create new message") } if err := message.From(TestSenderValid); err != nil { t.Errorf("failed to set sender address: %s", err) } if err := message.To(TestRcptValid); err != nil { t.Errorf("failed to set recipient address: %s", err) } message.Subject("This is a test subject") message.SetBodyString(TypeTextPlain, "Testmail") buffer := bytes.NewBuffer(nil) if _, err := message.WriteToSkipMiddleware(buffer, uppercaseMiddleware{}.Type()); err != nil { t.Fatalf("failed to write message with middleware to buffer: %s", err) } parsed, err := EMLToMsgFromReader(buffer) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "This is @ test subject") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } }) } // TestMsg_WriteToSendmailWithContext tests the WriteToSendmailWithContext() method of the Msg func TestMsg_WriteToSendmailWithContext(t *testing.T) { if os.Getenv("PERFORM_SENDMAIL_TESTS") != "true" { t.Skipf("PERFORM_SENDMAIL_TESTS variable is not set to true, skipping sendmail test") } if !hasSendmail() { t.Skipf("sendmail binary not found, skipping test") } tests := []struct { sendmailPath string shouldFail bool }{ {"/dev/null", true}, {"/bin/cat", true}, {"/is/invalid", true}, {SendmailPath, false}, } t.Run("WriteToSendmailWithContext on different paths", func(t *testing.T) { for _, tt := range tests { t.Run(tt.sendmailPath, func(t *testing.T) { ctx, cancel := context.WithTimeout(context.Background(), time.Second*1) defer cancel() message := testMessage(t) err := message.WriteToSendmailWithContext(ctx, tt.sendmailPath) if err != nil && !tt.shouldFail { t.Errorf("failed to write message to sendmail: %s", err) } if err == nil && tt.shouldFail { t.Error("expected error, got nil") } }) } }) t.Run("WriteToSendmailWithContext on canceled context", func(t *testing.T) { if !hasSendmail() { t.Skipf("sendmail binary not found, skipping test") } ctx, cancel := context.WithTimeout(context.Background(), time.Second*1) cancel() message := testMessage(t) if err := message.WriteToSendmailWithContext(ctx, SendmailPath); err == nil { t.Fatalf("expected error on canceled context, got nil") } }) t.Run("WriteToSendmailWithContext via WriteToSendmail", func(t *testing.T) { if !hasSendmail() { t.Skipf("sendmail binary not found, skipping test") } message := testMessage(t) if err := message.WriteToSendmail(); err != nil { t.Fatalf("failed to write message to sendmail: %s", err) } }) t.Run("WriteToSendmailWithContext via WriteToSendmailWithCommand", func(t *testing.T) { if !hasSendmail() { t.Skipf("sendmail binary not found, skipping test") } message := testMessage(t) if err := message.WriteToSendmailWithCommand(SendmailPath); err != nil { t.Fatalf("failed to write message to sendmail: %s", err) } }) } func TestMsg_NewReader(t *testing.T) { t.Run("NewReader succeeds", func(t *testing.T) { message := testMessage(t) reader := message.NewReader() if reader == nil { t.Fatalf("failed to create message reader") } if reader.Error() != nil { t.Errorf("failed to create message reader: %s", reader.Error()) } parsed, err := EMLToMsgFromReader(reader) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "Testmail") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } }) t.Run("NewReader should fail on write", func(t *testing.T) { message := testMessage(t) if len(message.parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(message.parts)) } message.parts[0].writeFunc = func(io.Writer) (int64, error) { return 0, errors.New("intentional write error") } reader := message.NewReader() if reader == nil { t.Fatalf("failed to create message reader") } if reader.Error() == nil { t.Fatalf("expected error on write, got nil") } if !strings.EqualFold(reader.Error().Error(), `failed to write Msg to Reader buffer: bodyWriter function: `+ `intentional write error`) { t.Errorf("expected error to be %s, got: %s", `failed to write Msg to Reader buffer: bodyWriter function: `+ `intentional write error`, reader.Error().Error()) } }) } func TestMsg_UpdateReader(t *testing.T) { t.Run("UpdateReader succeeds", func(t *testing.T) { message := testMessage(t) reader := message.NewReader() if reader == nil { t.Fatalf("failed to create message reader") } if reader.Error() != nil { t.Errorf("failed to create message reader: %s", reader.Error()) } message.Subject("This is the actual subject") message.UpdateReader(reader) if reader == nil { t.Fatalf("failed to create message reader") } if reader.Error() != nil { t.Errorf("failed to create message reader: %s", reader.Error()) } parsed, err := EMLToMsgFromReader(reader) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "This is the actual subject") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } }) t.Run("UpdateReader should fail on write", func(t *testing.T) { message := testMessage(t) reader := message.NewReader() if reader == nil { t.Fatalf("failed to create message reader") } if reader.Error() != nil { t.Errorf("failed to create message reader: %s", reader.Error()) } message.Subject("This is the actual subject") if len(message.parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(message.parts)) } message.parts[0].writeFunc = func(io.Writer) (int64, error) { return 0, errors.New("intentional write error") } message.UpdateReader(reader) if reader == nil { t.Fatalf("failed to create message reader") } if reader.Error() == nil { t.Fatalf("expected error on write, got nil") } if !strings.EqualFold(reader.Error().Error(), `bodyWriter function: intentional write error`) { t.Errorf("expected error to be %s, got: %s", `bodyWriter function: intentional write error`, reader.Error().Error()) } }) } func TestMsg_HasSendError(t *testing.T) { t.Run("HasSendError on unsent message", func(t *testing.T) { message := testMessage(t) if message.HasSendError() { t.Error("HasSendError on unsent message should return false") } }) t.Run("HasSendError on sent message", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err != nil { var netErr net.Error if errors.As(err, &netErr) && netErr.Timeout() { t.Skip("failed to connect to the test server due to timeout") } t.Fatalf("failed to connect to test server: %s", err) } t.Cleanup(func() { if err := client.Close(); err != nil { t.Errorf("failed to close client: %s", err) } }) if message.HasSendError() { t.Error("HasSendError on sent message should return false") } }) t.Run("HasSendError on failed message delivery", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailOnDataClose: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } if !message.HasSendError() { t.Error("HasSendError on failed message delivery should return true") } }) t.Run("HasSendError on failed message with SendError", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailOnDataClose: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } if !message.HasSendError() { t.Fatal("HasSendError on failed message delivery should return true") } if message.SendError() == nil { t.Fatal("SendError on failed message delivery should return SendErr") } var sendErr *SendError if !errors.As(message.SendError(), &sendErr) { t.Fatal("expected SendError to return a SendError type") } }) t.Run("HasSendError with SendErrorIsTemp", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailOnDataClose: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } if !message.HasSendError() { t.Error("HasSendError on failed message delivery should return true") } if message.SendErrorIsTemp() { t.Error("SendErrorIsTemp on hard failed message delivery should return false") } }) t.Run("HasSendError with SendErrorIsTemp on temp error", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailTemp: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } if !message.HasSendError() { t.Error("HasSendError on failed message delivery should return true") } if !message.SendErrorIsTemp() { t.Error("SendErrorIsTemp on temp failed message delivery should return true") } }) t.Run("HasSendError with not a SendErr", func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() PortAdder.Add(1) serverPort := int(TestServerPortBase + PortAdder.Load()) featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8" go func() { if err := simpleSMTPServer(ctx, t, &serverProps{ FailTemp: true, FeatureSet: featureSet, ListenPort: serverPort, }); err != nil { t.Errorf("failed to start test server: %s", err) return } }() time.Sleep(time.Millisecond * 30) client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS)) if err != nil { t.Fatalf("failed to create new client: %s", err) } message := testMessage(t) if err = client.DialAndSend(message); err == nil { t.Error("message delivery was supposed to fail on data close") } message.sendError = errors.New("not a SendErr") if !message.HasSendError() { t.Error("HasSendError with not a SendErr should still return true") } if message.SendErrorIsTemp() { t.Error("SendErrorIsTemp on not a SendErr should return false") } }) } func TestMsg_WriteToTempFile(t *testing.T) { if os.Getenv("PERFORM_UNIX_OPEN_WRITE_TESTS") != "true" { t.Skipf("PERFORM_UNIX_OPEN_WRITE_TESTS variable is not set. Skipping unix open/write tests") } t.Run("WriteToTempFile succeeds", func(t *testing.T) { message := testMessage(t) tempFile, err := message.WriteToTempFile() if err != nil { t.Fatalf("failed to write message to temp file: %s", err) } parsed, err := EMLToMsgFromFile(tempFile) if err != nil { t.Fatalf("failed to parse message in buffer: %s", err) } checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "") checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "") checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "Testmail") parts := parsed.GetParts() if len(parts) != 1 { t.Fatalf("expected 1 parts, got: %d", len(parts)) } if parts[0].contentType != TypeTextPlain { t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType) } if parts[0].encoding != EncodingQP { t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding) } messageBuf := bytes.NewBuffer(nil) _, err = parts[0].writeFunc(messageBuf) if err != nil { t.Errorf("writer func failed: %s", err) } got := strings.TrimSpace(messageBuf.String()) if !strings.HasSuffix(got, "Testmail") { t.Errorf("expected message buffer to contain Testmail, got: %s", got) } }) } func TestMsg_hasAlt(t *testing.T) { t.Run("message has no alt", func(t *testing.T) { message := testMessage(t) if message.hasAlt() { t.Error("message has no alt, but hasAlt returned true") } }) t.Run("message has alt", func(t *testing.T) { message := testMessage(t) message.AddAlternativeString(TypeTextHTML, "this is the alt") if !message.hasAlt() { t.Error("message has alt, but hasAlt returned false") } }) t.Run("message has no alt due to deleted part", func(t *testing.T) { message := testMessage(t) message.AddAlternativeString(TypeTextHTML, "this is the alt") if len(message.GetParts()) != 2 { t.Errorf("expected message to have 2 parts, got: %d", len(message.GetParts())) } message.parts[1].isDeleted = true if message.hasAlt() { t.Error("message has no alt, but hasAlt returned true") } }) t.Run("message has alt and deleted parts", func(t *testing.T) { message := testMessage(t) message.AddAlternativeString(TypeTextHTML, "this is the alt") message.AddAlternativeString(TypeTextPlain, "this is also a alt") if len(message.GetParts()) != 3 { t.Errorf("expected message to have 3 parts, got: %d", len(message.GetParts())) } message.parts[1].isDeleted = true if !message.hasAlt() { t.Error("message has alt, but hasAlt returned false") } }) t.Run("message has alt but it is pgptype", func(t *testing.T) { message := testMessage(t) message.SetPGPType(PGPSignature) if message.hasAlt() { t.Error("message has alt but it is a pgpType, hence hasAlt should return false") } }) } // TestMsg_hasAlt tests the hasAlt() method of the Msg with active S/MIME func TestMsg_hasAltWithSMime(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() m.SetBodyString(TypeTextPlain, "Plain") m.AddAlternativeString(TypeTextHTML, "HTML") if err := m.SignWithSMimeRSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to init smime configuration") } if m.hasAlt() { t.Errorf("mail has alternative parts and S/MIME is active, but hasAlt() returned true") } } // TestMsg_hasSMime tests the hasSMime() method of the Msg func TestMsg_hasSMime(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() if err := m.SignWithSMimeRSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to init smime configuration") } m.SetBodyString(TypeTextPlain, "Plain") if !m.hasSMime() { t.Errorf("mail has smime configured but hasSMime() returned true") } } func TestMsg_hasMixed(t *testing.T) { t.Run("message has no mixed", func(t *testing.T) { message := testMessage(t) if message.hasMixed() { t.Error("message has no mixed, but hasMixed returned true") } }) t.Run("message with alt has no mixed", func(t *testing.T) { message := testMessage(t) message.AddAlternativeString(TypeTextHTML, "this is the alt") if message.hasMixed() { t.Error("message has no mixed, but hasMixed returned true") } }) t.Run("message with attachment is mixed", func(t *testing.T) { message := testMessage(t) message.AttachFile("testdata/attachment.txt") if !message.hasMixed() { t.Error("message with attachment is supposed to be mixed") } }) t.Run("message with embed is not mixed", func(t *testing.T) { message := testMessage(t) message.EmbedFile("testdata/embed.txt") if message.hasMixed() { t.Error("message with embed is not supposed to be mixed") } }) t.Run("message with attachment and embed is mixed", func(t *testing.T) { message := testMessage(t) message.AttachFile("testdata/attachment.txt") message.EmbedFile("testdata/embed.txt") if !message.hasMixed() { t.Error("message with attachment and embed is supposed to be mixed") } }) } func TestMsg_hasRelated(t *testing.T) { t.Run("message has no related", func(t *testing.T) { message := testMessage(t) if message.hasRelated() { t.Error("message has no related, but hasRelated returned true") } }) t.Run("message with alt has no related", func(t *testing.T) { message := testMessage(t) message.AddAlternativeString(TypeTextHTML, "this is the alt") if message.hasRelated() { t.Error("message has no related, but hasRelated returned true") } }) t.Run("message with attachment is not related", func(t *testing.T) { message := testMessage(t) message.AttachFile("testdata/attachment.txt") if message.hasRelated() { t.Error("message with attachment is not supposed to be related") } }) t.Run("message with embed is related", func(t *testing.T) { message := testMessage(t) message.EmbedFile("testdata/embed.txt") if !message.hasRelated() { t.Error("message with embed is supposed to be related") } }) t.Run("message with attachment and embed is related", func(t *testing.T) { message := testMessage(t) message.AttachFile("testdata/attachment.txt") message.EmbedFile("testdata/embed.txt") if !message.hasRelated() { t.Error("message with attachment and embed is supposed to be related") } }) } // TestMsg_WriteToWithSMIME tests the WriteTo() method of the Msg func TestMsg_WriteToWithSMIME(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() m.Subject("This is a test") m.SetBodyString(TypeTextPlain, "Plain") if err := m.SignWithSMimeRSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to init smime configuration") } wbuf := bytes.Buffer{} if _, err = m.WriteTo(&wbuf); err != nil { t.Errorf("WriteTo() failed: %s", err) } result := wbuf.String() boundary := result[strings.LastIndex(result, "--")-60 : strings.LastIndex(result, "--")] if strings.Count(result, boundary) != 4 { t.Errorf("WriteTo() failed. False number of boundaries found") } parts := strings.Split(result, fmt.Sprintf("--%s", boundary)) if len(parts) != 4 { t.Errorf("WriteTo() failed. False number of parts found") } preamble := parts[0] if !strings.Contains(preamble, "MIME-Version: 1.0") { t.Errorf("WriteTo() failed. Unable to find MIME-Version") } if !strings.Contains(preamble, "Subject: This is a test") { t.Errorf("WriteTo() failed. Unable to find subject") } if !strings.Contains(preamble, fmt.Sprintf("Content-Type: multipart/signed; protocol=\"application/pkcs7-signature\"; micalg=sha-256;\r\n boundary=%s", boundary)) { t.Errorf("WriteTo() failed. Unable to find Content-Type") } signedData := parts[1] if !strings.Contains(signedData, "Content-Transfer-Encoding: quoted-printable") { t.Errorf("WriteTo() failed. Unable to find Content-Transfer-Encoding") } if !strings.Contains(signedData, "Content-Type: text/plain; charset=UTF-8") { t.Errorf("WriteTo() failed. Unable to find Content-Type") } if !strings.Contains(signedData, "Plain") { t.Errorf("WriteTo() failed. Unable to find Content") } signature := parts[2] if !strings.Contains(signature, "Content-Transfer-Encoding: base64") { t.Errorf("WriteTo() failed. Unable to find Content-Transfer-Encoding") } if !strings.Contains(signature, `application/pkcs7-signature; name="smime.p7s"`) { t.Errorf("WriteTo() failed. Unable to find Content-Type") } if strings.Contains(signature, "Plain") { t.Errorf("WriteTo() failed. Unable to find signature") } } func TestMsg_hasPGPType(t *testing.T) { t.Run("message has no pgpType", func(t *testing.T) { message := testMessage(t) if message.hasPGPType() { t.Error("message has no PGPType, but hasPGPType returned true") } }) t.Run("message has signature", func(t *testing.T) { message := testMessage(t) message.SetPGPType(PGPSignature) if !message.hasPGPType() { t.Error("message has signature, but hasPGPType returned false") } }) t.Run("message has encryption", func(t *testing.T) { message := testMessage(t) message.SetPGPType(PGPEncrypt) if !message.hasPGPType() { t.Error("message has encryption, but hasPGPType returned false") } }) t.Run("message has encryption and signature", func(t *testing.T) { message := testMessage(t) message.SetPGPType(PGPEncrypt | PGPSignature) if !message.hasPGPType() { t.Error("message has encryption and signature, but hasPGPType returned false") } }) t.Run("message has NoPGP", func(t *testing.T) { message := testMessage(t) message.SetPGPType(NoPGP) if message.hasPGPType() { t.Error("message has NoPGP, but hasPGPType returned true") } }) } func TestMsg_checkUserAgent(t *testing.T) { t.Run("default user agent should be set", func(t *testing.T) { message := testMessage(t) message.checkUserAgent() checkGenHeader(t, message, HeaderUserAgent, "checkUserAgent", 0, 1, fmt.Sprintf("go-mail v%s // https://github.com/wneessen/go-mail", VERSION)) checkGenHeader(t, message, HeaderXMailer, "checkUserAgent", 0, 1, fmt.Sprintf("go-mail v%s // https://github.com/wneessen/go-mail", VERSION)) }) t.Run("noDefaultUserAgent should return empty string", func(t *testing.T) { message := testMessage(t) message.noDefaultUserAgent = true message.checkUserAgent() if len(message.genHeader[HeaderUserAgent]) != 0 { t.Error("user agent should be empty") } if len(message.genHeader[HeaderXMailer]) != 0 { t.Error("x-mailer should be empty") } }) } func TestMsg_addDefaultHeader(t *testing.T) { t.Run("empty message should add defaults", func(t *testing.T) { message := NewMsg() if message == nil { t.Fatal("failed to create new message") } if _, ok := message.genHeader[HeaderDate]; ok { t.Error("empty message should not have date header") } if _, ok := message.genHeader[HeaderMessageID]; ok { t.Error("empty message should not have message-id header") } if _, ok := message.genHeader[HeaderMIMEVersion]; ok { t.Error("empty message should not have mime version header") } message.addDefaultHeader() if _, ok := message.genHeader[HeaderDate]; !ok { t.Error("message should now have date header") } if _, ok := message.genHeader[HeaderMessageID]; !ok { t.Error("message should now have message-id header") } if _, ok := message.genHeader[HeaderMIMEVersion]; !ok { t.Error("message should now have mime version header") } }) } func TestMsg_fileFromIOFS(t *testing.T) { t.Run("file from fs.FS where fs is nil ", func(t *testing.T) { _, err := fileFromIOFS("testfile.txt", nil) if err == nil { t.Fatal("expected error for fs.FS that is nil") } }) } // TestSignWithSMime_ValidRSAKeyPair tests WithSMimeSinging with given rsa key pair func TestSignWithSMime_ValidRSAKeyPair(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() if err := m.SignWithSMimeRSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to set sMime. Cause: %v", err) } if m.sMime.privateKey.rsa == nil { t.Errorf("WithSMimeSinging() - no private key is given") } if m.sMime.certificate == nil { t.Errorf("WithSMimeSinging() - no certificate is given") } } // TestSignWithSMime_ValidRSAKeyPair tests WithSMimeSinging with given ecdsa key pair func TestSignWithSMime_ValidECDSAKeyPair(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyECDSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() if err := m.SignWithSMimeECDSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to set sMime. Cause: %v", err) } if m.sMime.privateKey.ecdsa == nil { t.Errorf("WithSMimeSinging() - no private key is given") } if m.sMime.certificate == nil { t.Errorf("WithSMimeSinging() - no certificate is given") } } // TestSignWithTLSCertificate tests SignWithTLSCertificate with given *tls.Certificate func TestSignWithTLSCertificate(t *testing.T) { keyPairTLS, err := getDummyKeyPairTLS() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() if err := m.SignWithTLSCertificate(keyPairTLS); err != nil { t.Errorf("failed to set sMime. Cause: %v", err) } if m.sMime.privateKey.ecdsa == nil { t.Errorf("SignWithTLSCertificate() - no private key is given") } if m.sMime.certificate == nil { t.Errorf("SignWithTLSCertificate() - no certificate is given") } } // TestSignWithTLSCertificate tests SignWithTLSCertificate with given *tls.Certificate and nil leaf certificate // PLEASE NOTE: Before Go 1.23 Certificate.Leaf was left nil, and the parsed certificate was // discarded. This behavior can be re-enabled by setting "x509keypairleaf=0" // in the GODEBUG environment variable. func TestSignWithTLSCertificate_WithKeyPairLeafNil(t *testing.T) { t.Setenv("GODEBUG", "x509keypairleaf=0") keyPairTLS, err := getDummyKeyPairTLS() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() if err := m.SignWithTLSCertificate(keyPairTLS); err != nil { t.Errorf("failed to set sMime. Cause: %v", err) } if m.sMime.privateKey.ecdsa == nil { t.Errorf("SignWithTLSCertificate() - no private key is given") } if m.sMime.certificate == nil { t.Errorf("SignWithTLSCertificate() - no certificate is given") } } // TestSignWithSMime_InvalidPrivateKey tests WithSMimeSinging with given invalid private key func TestSignWithSMime_InvalidPrivateKey(t *testing.T) { m := NewMsg() err := m.SignWithSMimeRSA(nil, nil, nil) if !errors.Is(err, ErrInvalidPrivateKey) { t.Errorf("failed to pre-check SignWithSMime method values correctly: %s", err) } } // TestSignWithSMime_InvalidCertificate tests WithSMimeSinging with given invalid certificate func TestSignWithSMime_InvalidCertificate(t *testing.T) { privateKey, _, _, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() err = m.SignWithSMimeRSA(privateKey, nil, nil) if !errors.Is(err, ErrInvalidCertificate) { t.Errorf("failed to pre-check SignWithSMime method values correctly: %s", err) } } // TestMsg_createSignaturePart tests the Msg.createSignaturePart method func TestMsg_createSignaturePart(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } m := NewMsg() if err := m.SignWithSMimeRSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to init smime configuration") } body := []byte("This is the body") part, err := m.createSignaturePart(EncodingQP, TypeTextPlain, CharsetUTF7, body) if err != nil { t.Errorf("createSignaturePart() method failed.") } if part.GetEncoding() != EncodingB64 { t.Errorf("createSignaturePart() method failed. Expected encoding: %s, got: %s", EncodingB64, part.GetEncoding()) } if part.GetContentType() != typeSMimeSigned { t.Errorf("createSignaturePart() method failed. Expected content type: %s, got: %s", typeSMimeSigned, part.GetContentType()) } if part.GetCharset() != CharsetUTF8 { t.Errorf("createSignaturePart() method failed. Expected charset: %s, got: %s", CharsetUTF8, part.GetCharset()) } if content, err := part.GetContent(); err != nil || len(content) == len(body) { t.Errorf("createSignaturePart() method failed. Expected content should not be equal: %s, got: %s", body, part.GetEncoding()) } } // TestMsg_signMessage tests the Msg.signMessage method func TestMsg_signMessage(t *testing.T) { privateKey, certificate, intermediateCertificate, err := getDummyRSACryptoMaterial() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } body := []byte("This is the body") m := NewMsg() m.SetBodyString(TypeTextPlain, string(body)) if err := m.SignWithSMimeRSA(privateKey, certificate, intermediateCertificate); err != nil { t.Errorf("failed to init smime configuration") } msg, err := m.signMessage(m) if err != nil { t.Errorf("createSignaturePart() method failed.") } parts := msg.GetParts() if len(parts) != 2 { t.Errorf("createSignaturePart() method failed. Expected 2 parts, got: %d", len(parts)) } signedPart := parts[0] if signedPart.GetEncoding() != EncodingQP { t.Errorf("createSignaturePart() method failed. Expected encoding: %s, got: %s", EncodingB64, signedPart.GetEncoding()) } if signedPart.GetContentType() != TypeTextPlain { t.Errorf("createSignaturePart() method failed. Expected content type: %s, got: %s", typeSMimeSigned, signedPart.GetContentType()) } if signedPart.GetCharset() != CharsetUTF8 { t.Errorf("createSignaturePart() method failed. Expected charset: %s, got: %s", CharsetUTF8, signedPart.GetCharset()) } if content, err := signedPart.GetContent(); err != nil || len(content) != len(body) { t.Errorf("createSignaturePart() method failed. Expected content should be equal: %s, got: %s", body, content) } signaturePart := parts[1] if signaturePart.GetEncoding() != EncodingB64 { t.Errorf("createSignaturePart() method failed. Expected encoding: %s, got: %s", EncodingB64, signaturePart.GetEncoding()) } if signaturePart.GetContentType() != typeSMimeSigned { t.Errorf("createSignaturePart() method failed. Expected content type: %s, got: %s", typeSMimeSigned, signaturePart.GetContentType()) } if signaturePart.GetCharset() != CharsetUTF8 { t.Errorf("createSignaturePart() method failed. Expected charset: %s, got: %s", CharsetUTF8, signaturePart.GetCharset()) } if content, err := signaturePart.GetContent(); err != nil || len(content) == len(body) { t.Errorf("createSignaturePart() method failed. Expected content should not be equal: %s, got: %s", body, signaturePart.GetEncoding()) } } // TestGetLeafCertificate tests the Msg.getLeafCertificate method func TestGetLeafCertificate(t *testing.T) { keyPairTLS, err := getDummyKeyPairTLS() if err != nil { t.Errorf("failed to laod dummy crypto material. Cause: %v", err) } leafCertificate, err := getLeafCertificate(keyPairTLS) if err != nil { t.Errorf("failed to get leaf certificate. Cause: %v", err) } if leafCertificate == nil { t.Errorf("failed to get leaf certificate") } } // uppercaseMiddleware is a middleware type that transforms the subject to uppercase. type uppercaseMiddleware struct{} // Handle satisfies the Middleware interface for the uppercaseMiddlware func (mw uppercaseMiddleware) Handle(m *Msg) *Msg { s, ok := m.genHeader[HeaderSubject] if !ok { fmt.Println("can't find the subject header") } if s == nil || len(s) < 1 { s = append(s, "") } m.Subject(strings.ToUpper(s[0])) return m } // Type satisfies the Middleware interface for the uppercaseMiddlware func (mw uppercaseMiddleware) Type() MiddlewareType { return "uppercase" } // encodeMiddleware is a middleware type that transforms an "a" in the subject to an "@" type encodeMiddleware struct{} // Handle satisfies the Middleware interface for the encodeMiddleware func (mw encodeMiddleware) Handle(m *Msg) *Msg { s, ok := m.genHeader[HeaderSubject] if !ok { fmt.Println("can't find the subject header") } if s == nil || len(s) < 1 { s = append(s, "") } m.Subject(strings.Replace(s[0], "a", "@", -1)) return m } // Type satisfies the Middleware interface for the encodeMiddleware func (mw encodeMiddleware) Type() MiddlewareType { return "encode" } // failReadWriteSeekCloser is a type that always returns an error. It satisfies the io.Reader, io.Writer // io.Closer, io.Seeker, io.WriteSeeker, io.ReadSeeker, io.ReadCloser and io.WriteCloser interfaces type failReadWriteSeekCloser struct{} // Write satisfies the io.Writer interface for the failReadWriteSeekCloser type func (failReadWriteSeekCloser) Write([]byte) (int, error) { return 0, errors.New("intentional write failure") } // Read satisfies the io.Reader interface for the failReadWriteSeekCloser type func (failReadWriteSeekCloser) Read([]byte) (int, error) { return 0, errors.New("intentional read failure") } // Seek satisfies the io.Seeker interface for the failReadWriteSeekCloser type func (failReadWriteSeekCloser) Seek(int64, int) (int64, error) { return 0, errors.New("intentional seek failure") } // Close satisfies the io.Closer interface for the failReadWriteSeekCloser type func (failReadWriteSeekCloser) Close() error { return errors.New("intentional close failure") } // checkAddrHeader verifies the correctness of an AddrHeader in a Msg based on the provided criteria. // It checks whether the AddrHeader contains the correct address, name, and number of fields. func checkAddrHeader(t *testing.T, message *Msg, header AddrHeader, fn string, field, wantFields int, wantMail, wantName string, ) { t.Helper() addresses, ok := message.addrHeader[header] if !ok { t.Fatalf("failed to exec %s, addrHeader field is not set", fn) } if len(addresses) != wantFields { t.Fatalf("failed to exec %s, addrHeader value count is: %d, want: %d", fn, len(addresses), field) } if addresses[field].Address != wantMail { t.Errorf("failed to exec %s, addrHeader value is %s, want: %s", fn, addresses[field].Address, wantMail) } wantString := fmt.Sprintf(`<%s>`, wantMail) if wantName != "" { wantString = fmt.Sprintf(`%q <%s>`, wantName, wantMail) } if addresses[field].String() != wantString { t.Errorf("failed to exec %s, addrHeader value is %s, want: %s", fn, addresses[field].String(), wantString) } if addresses[field].Name != wantName { t.Errorf("failed to exec %s, addrHeader name is %s, want: %s", fn, addresses[field].Name, wantName) } } // checkGenHeader validates the generated header in an email message, verifying its presence and expected values. func checkGenHeader(t *testing.T, message *Msg, header Header, fn string, field, wantFields int, wantVal string, ) { t.Helper() values, ok := message.genHeader[header] if !ok { t.Fatalf("failed to exec %s, genHeader field is not set", fn) } if len(values) != wantFields { t.Fatalf("failed to exec %s, genHeader value count is: %d, want: %d", fn, len(values), field) } if values[field] != wantVal { t.Errorf("failed to exec %s, genHeader value is %s, want: %s", fn, values[field], wantVal) } } // hasSendmail checks if the /usr/sbin/sendmail file exists and is executable. Returns true if conditions are met. func hasSendmail() bool { sm, err := os.Stat(SendmailPath) if err == nil { if sm.Mode()&0o111 != 0 { return true } } return false } // Fuzzing tests func FuzzMsg_Subject(f *testing.F) { f.Add("Testsubject") f.Add("") f.Add("This is a longer test subject.") f.Add("Let's add some umlauts: üäöß") f.Add("Or even emojis: ☝️💪👍") f.Fuzz(func(t *testing.T, data string) { m := NewMsg() m.Subject(data) m.Reset() }) } func FuzzMsg_From(f *testing.F) { f.Add("Toni Tester ") f.Add("") f.Add("mail@server.com") f.Fuzz(func(t *testing.T, data string) { m := NewMsg() if err := m.From(data); err != nil && !strings.Contains(err.Error(), "failed to parse mail address") { t.Errorf("failed set set FROM address: %s", err) } m.Reset() }) }