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Add EML message parsing tests
Introduced a new test, `TestEMLToMsgFromFile`, to validate the functions responsible for EML message parsing. This complements the existing `EMLToMsgFromString` test, holding them accountable for subject and encoding accuracy. Also, a temporary directory is now created for testing File-related operations in isolation.
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commit
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1 changed files with 61 additions and 6 deletions
67
eml_test.go
67
eml_test.go
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@ -5,6 +5,8 @@
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package mail
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import (
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"fmt"
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"os"
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"strings"
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"testing"
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"time"
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@ -143,15 +145,68 @@ func TestEMLToMsgFromString(t *testing.T) {
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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m, err := EMLToMsgFromString(tt.eml)
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msg, err := EMLToMsgFromString(tt.eml)
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if err != nil {
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t.Errorf("failed to parse EML: %s", err)
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t.Errorf("failed to parse EML: %subject", err)
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}
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if m.Encoding() != tt.enc {
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t.Errorf("EMLToMsgFromString failed: expected encoding: %s, but got: %s", tt.enc, m.Encoding())
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if msg.Encoding() != tt.enc {
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t.Errorf("EMLToMsgFromString failed: expected encoding: %subject, but got: %subject", tt.enc, msg.Encoding())
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}
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if s := m.GetGenHeader(HeaderSubject); len(s) > 0 && !strings.EqualFold(s[0], tt.sub) {
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t.Errorf("EMLToMsgFromString failed: expected subject: %s, but got: %s", tt.sub, s[0])
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if subject := msg.GetGenHeader(HeaderSubject); len(subject) > 0 && !strings.EqualFold(subject[0], tt.sub) {
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t.Errorf("EMLToMsgFromString failed: expected subject: %subject, but got: %subject",
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tt.sub, subject[0])
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}
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})
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}
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}
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func TestEMLToMsgFromFile(t *testing.T) {
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tests := []struct {
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name string
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eml string
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enc string
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sub string
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}{
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{
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"Plain text no encoding", exampleMailPlainNoEnc, "8bit",
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"Example mail // plain text without encoding",
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},
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{
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"Plain text quoted-printable", exampleMailPlainQP, "quoted-printable",
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"Example mail // plain text quoted-printable",
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},
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{
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"Plain text base64", exampleMailPlainB64, "base64",
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"Example mail // plain text base64",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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tempDir, err := os.MkdirTemp("", fmt.Sprintf("*-%s", tt.name))
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if err != nil {
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t.Errorf("failed to create temp dir: %s", err)
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return
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}
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defer func() {
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if err = os.RemoveAll(tempDir); err != nil {
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t.Error("failed to remove temp dir:", err)
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}
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}()
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err = os.WriteFile(fmt.Sprintf("%s/%s.eml", tempDir, tt.name), []byte(tt.eml), 0666)
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if err != nil {
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t.Error("failed to write mail to temp file:", err)
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return
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}
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msg, err := EMLToMsgFromFile(fmt.Sprintf("%s/%s.eml", tempDir, tt.name))
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if err != nil {
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t.Errorf("failed to parse EML: %subject", err)
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}
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if msg.Encoding() != tt.enc {
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t.Errorf("EMLToMsgFromString failed: expected encoding: %subject, but got: %subject", tt.enc, msg.Encoding())
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}
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if subject := msg.GetGenHeader(HeaderSubject); len(subject) > 0 && !strings.EqualFold(subject[0], tt.sub) {
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t.Errorf("EMLToMsgFromString failed: expected subject: %subject, but got: %subject",
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tt.sub, subject[0])
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}
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})
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}
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