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Add test for EMLToMsgFromString with embedded content

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The new test ensures that the EMLToMsgFromString function properly handles an EML that contains embedded content. The expected subject content and number of embedded objects are checked to confirm correct parsing.
This commit is contained in:
Winni Neessen 2024-06-22 14:24:52 +02:00
parent bb33c4a921
commit 4c88dce2a8
Signed by: wneessen
GPG key ID: 385AC9889632126E
1 changed files with 40 additions and 11 deletions
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51
eml_test.go
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@ -152,6 +152,33 @@ ICAgc2V2ZXJhbAogICAgICAgICAgICBuZXdsaW5lcwoJICAgICAgICAgICAgYW5kCgkgICAgc3Bh
Y2VzCiAgICAgaW4KICBpdAouCgpBcyB3ZWxsIGFzIGFuIGVtb2ppOiDwn5mCCg== Y2VzCiAgICAgaW4KICBpdAouCgpBcyB3ZWxsIGFzIGFuIGVtb2ppOiDwn5mCCg==
--45c75ff528359022eb03679fbe91877d75343f2e1f8193e349deffa33ff7--` --45c75ff528359022eb03679fbe91877d75343f2e1f8193e349deffa33ff7--`
exampleMailPlainB64WithEmbed = `Date: Wed, 01 Nov 2023 00:00:00 +0000
MIME-Version: 1.0
Message-ID: <1305604950.683004066175.AAAAAAAAaaaaaaaaB@go-mail.dev>
Subject: Example mail // plain text base64 with embed
User-Agent: go-mail v0.4.1 // https://github.com/wneessen/go-mail
X-Mailer: go-mail v0.4.1 // https://github.com/wneessen/go-mail
From: "Toni Tester" <go-mail@go-mail.dev>
To: <go-mail+test@go-mail.dev>
Cc: <go-mail+cc@go-mail.dev>
Content-Type: multipart/related;
boundary=ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b
--ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset=UTF-8
This is a test body string
--ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b
Content-Disposition: inline; filename="pixel.png"
Content-Id: <pixel.png>
Content-Transfer-Encoding: base64
Content-Type: image/png; name="pixel.png"
iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQIW2NgYGD4DwABBAEAwS2O
UAAAAABJRU5ErkJggg==
--ffbcfb94b44e5297325102f6ced05b3b37f1d70fc38a5e78dc73c1a8434b--`
) )
func TestEMLToMsgFromString(t *testing.T) { func TestEMLToMsgFromString(t *testing.T) {
@ -278,18 +305,20 @@ func TestEMLToMsgFromStringWithAttachment(t *testing.T) {
t.Errorf("EMLToMsgFromString of EML with attachment failed: expected no. of attachments: %d, but got: %d", t.Errorf("EMLToMsgFromString of EML with attachment failed: expected no. of attachments: %d, but got: %d",
1, len(msg.attachments)) 1, len(msg.attachments))
} }
contentTypeHeader := msg.GetGenHeader(HeaderContentType) }
if len(contentTypeHeader) != 1 {
t.Errorf("EMLToMsgFromString of EML with attachment failed: expected no. of content-type header: %d, "+ func TestEMLToMsgFromStringWithEmbed(t *testing.T) {
"but got: %d", 1, len(contentTypeHeader)) wantSubject := "Example mail // plain text base64 with embed"
msg, err := EMLToMsgFromString(exampleMailPlainB64WithEmbed)
if err != nil {
t.Errorf("EML with embed failed: %s", err)
} }
contentTypeSplit := strings.SplitN(contentTypeHeader[0], "; ", 2) if subject := msg.GetGenHeader(HeaderSubject); len(subject) > 0 && !strings.EqualFold(subject[0], wantSubject) {
if len(contentTypeSplit) != 2 { t.Errorf("EMLToMsgFromString of EML with embed failed: expected subject: %s, but got: %s",
t.Error("failed to split Content-Type header") wantSubject, subject[0])
return
} }
if !strings.EqualFold(contentTypeSplit[0], "multipart/mixed") { if len(msg.embeds) != 1 {
t.Errorf("EMLToMsgFromString of EML with attachment failed: expected content-type: %s, "+ t.Errorf("EMLToMsgFromString of EML with embed failed: expected no. of embeds: %d, but got: %d",
"but got: %s", "multipart/mixed", contentTypeSplit[0]) 1, len(msg.attachments))
} }
} }