package gomail import ( "bytes" "encoding/base64" "io" "io/ioutil" "path/filepath" "regexp" "strconv" "strings" "testing" "time" ) func init() { now = func() time.Time { return time.Date(2014, 06, 25, 17, 46, 0, 0, time.UTC) } } type message struct { from string to []string content string } func TestMessage(t *testing.T) { m := NewMessage() m.SetAddressHeader("From", "from@example.com", "Señor From") m.SetHeader("To", m.FormatAddress("to@example.com", "Señor To"), "tobis@example.com") m.SetAddressHeader("Cc", "cc@example.com", "A, B") m.SetAddressHeader("X-To", "ccbis@example.com", "à, b") m.SetDateHeader("X-Date", now()) m.SetHeader("X-Date-2", m.FormatDate(now())) m.SetHeader("Subject", "¡Hola, señor!") m.SetHeaders(map[string][]string{ "X-Headers": {"Test", "Café"}, }) m.SetBody("text/plain", "¡Hola, señor!") want := &message{ from: "from@example.com", to: []string{ "to@example.com", "tobis@example.com", "cc@example.com", }, content: "From: =?UTF-8?q?Se=C3=B1or_From?= \r\n" + "To: =?UTF-8?q?Se=C3=B1or_To?= , tobis@example.com\r\n" + "Cc: \"A, B\" \r\n" + "X-To: =?UTF-8?b?w6AsIGI=?= \r\n" + "X-Date: Wed, 25 Jun 2014 17:46:00 +0000\r\n" + "X-Date-2: Wed, 25 Jun 2014 17:46:00 +0000\r\n" + "X-Headers: Test, =?UTF-8?q?Caf=C3=A9?=\r\n" + "Subject: =?UTF-8?q?=C2=A1Hola,_se=C3=B1or!?=\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "=C2=A1Hola, se=C3=B1or!", } testMessage(t, m, 0, want) } func TestBodyWriter(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.AddAlternativeWriter("text/plain", func(w io.Writer) error { _, err := w.Write([]byte("Test message")) return err }) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "Test message", } testMessage(t, m, 0, want) } func TestCustomMessage(t *testing.T) { m := NewMessage(SetCharset("ISO-8859-1"), SetEncoding(Base64)) m.SetHeaders(map[string][]string{ "From": {"from@example.com"}, "To": {"to@example.com"}, "Subject": {"Café"}, }) m.SetBody("text/html", "¡Hola, señor!") want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Subject: =?ISO-8859-1?b?Q2Fmw6k=?=\r\n" + "Content-Type: text/html; charset=ISO-8859-1\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + "wqFIb2xhLCBzZcOxb3Ih", } testMessage(t, m, 0, want) } func TestUnencodedMessage(t *testing.T) { m := NewMessage(SetEncoding(Unencoded)) m.SetHeaders(map[string][]string{ "From": {"from@example.com"}, "To": {"to@example.com"}, "Subject": {"Café"}, }) m.SetBody("text/html", "¡Hola, señor!") want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Subject: =?UTF-8?q?Caf=C3=A9?=\r\n" + "Content-Type: text/html; charset=UTF-8\r\n" + "Content-Transfer-Encoding: 8bit\r\n" + "\r\n" + "¡Hola, señor!", } testMessage(t, m, 0, want) } func TestRecipients(t *testing.T) { m := NewMessage() m.SetHeaders(map[string][]string{ "From": {"from@example.com"}, "To": {"to@example.com"}, "Cc": {"cc@example.com"}, "Bcc": {"bcc1@example.com", "bcc2@example.com"}, "Subject": {"Hello!"}, }) m.SetBody("text/plain", "Test message") want := &message{ from: "from@example.com", to: []string{"to@example.com", "cc@example.com", "bcc1@example.com", "bcc2@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Cc: cc@example.com\r\n" + "Subject: Hello!\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "Test message", } testMessage(t, m, 0, want) } func TestAlternative(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", "¡Hola, señor!") m.AddAlternative("text/html", "¡Hola, señor!") want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: multipart/alternative; boundary=_BOUNDARY_1_\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "=C2=A1Hola, se=C3=B1or!\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: text/html; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "=C2=A1Hola, se=C3=B1or!\r\n" + "--_BOUNDARY_1_--\r\n", } testMessage(t, m, 1, want) } func TestAttachmentOnly(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.Attach(mockCopyFile("/tmp/test.pdf")) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: application/pdf; name=\"test.pdf\"\r\n" + "Content-Disposition: attachment; filename=\"test.pdf\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.pdf")), } testMessage(t, m, 0, want) } func TestAttachment(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", "Test") m.Attach(mockCopyFile("/tmp/test.pdf")) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: multipart/mixed; boundary=_BOUNDARY_1_\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "Test\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: application/pdf; name=\"test.pdf\"\r\n" + "Content-Disposition: attachment; filename=\"test.pdf\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.pdf")) + "\r\n" + "--_BOUNDARY_1_--\r\n", } testMessage(t, m, 1, want) } func TestAttachmentsOnly(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.Attach(mockCopyFile("/tmp/test.pdf")) m.Attach(mockCopyFile("/tmp/test.zip")) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: multipart/mixed; boundary=_BOUNDARY_1_\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: application/pdf; name=\"test.pdf\"\r\n" + "Content-Disposition: attachment; filename=\"test.pdf\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.pdf")) + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: application/zip; name=\"test.zip\"\r\n" + "Content-Disposition: attachment; filename=\"test.zip\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.zip")) + "\r\n" + "--_BOUNDARY_1_--\r\n", } testMessage(t, m, 1, want) } func TestAttachments(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", "Test") m.Attach(mockCopyFile("/tmp/test.pdf")) m.Attach(mockCopyFile("/tmp/test.zip")) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: multipart/mixed; boundary=_BOUNDARY_1_\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "Test\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: application/pdf; name=\"test.pdf\"\r\n" + "Content-Disposition: attachment; filename=\"test.pdf\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.pdf")) + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: application/zip; name=\"test.zip\"\r\n" + "Content-Disposition: attachment; filename=\"test.zip\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.zip")) + "\r\n" + "--_BOUNDARY_1_--\r\n", } testMessage(t, m, 1, want) } func TestEmbedded(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.Embed(mockCopyFileWithHeader(m, "image1.jpg", map[string][]string{"Content-ID": {""}})) m.Embed(mockCopyFile("image2.jpg")) m.SetBody("text/plain", "Test") want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: multipart/related; boundary=_BOUNDARY_1_\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "Test\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: image/jpeg; name=\"image1.jpg\"\r\n" + "Content-Disposition: inline; filename=\"image1.jpg\"\r\n" + "Content-ID: \r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of image1.jpg")) + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: image/jpeg; name=\"image2.jpg\"\r\n" + "Content-Disposition: inline; filename=\"image2.jpg\"\r\n" + "Content-ID: \r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of image2.jpg")) + "\r\n" + "--_BOUNDARY_1_--\r\n", } testMessage(t, m, 1, want) } func TestFullMessage(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", "¡Hola, señor!") m.AddAlternative("text/html", "¡Hola, señor!") m.Attach(mockCopyFile("test.pdf")) m.Embed(mockCopyFile("image.jpg")) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: multipart/mixed; boundary=_BOUNDARY_1_\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: multipart/related; boundary=_BOUNDARY_2_\r\n" + "\r\n" + "--_BOUNDARY_2_\r\n" + "Content-Type: multipart/alternative; boundary=_BOUNDARY_3_\r\n" + "\r\n" + "--_BOUNDARY_3_\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "=C2=A1Hola, se=C3=B1or!\r\n" + "--_BOUNDARY_3_\r\n" + "Content-Type: text/html; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "=C2=A1Hola, se=C3=B1or!\r\n" + "--_BOUNDARY_3_--\r\n" + "\r\n" + "--_BOUNDARY_2_\r\n" + "Content-Type: image/jpeg; name=\"image.jpg\"\r\n" + "Content-Disposition: inline; filename=\"image.jpg\"\r\n" + "Content-ID: \r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of image.jpg")) + "\r\n" + "--_BOUNDARY_2_--\r\n" + "\r\n" + "--_BOUNDARY_1_\r\n" + "Content-Type: application/pdf; name=\"test.pdf\"\r\n" + "Content-Disposition: attachment; filename=\"test.pdf\"\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + base64.StdEncoding.EncodeToString([]byte("Content of test.pdf")) + "\r\n" + "--_BOUNDARY_1_--\r\n", } testMessage(t, m, 3, want) want = &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + "Test reset", } m.Reset() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", "Test reset") testMessage(t, m, 0, want) } func TestQpLineLength(t *testing.T) { m := NewMessage() m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", strings.Repeat("0", 76)+"\r\n"+ strings.Repeat("0", 75)+"à\r\n"+ strings.Repeat("0", 74)+"à\r\n"+ strings.Repeat("0", 73)+"à\r\n"+ strings.Repeat("0", 72)+"à\r\n"+ strings.Repeat("0", 75)+"\r\n"+ strings.Repeat("0", 76)+"\n") want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: quoted-printable\r\n" + "\r\n" + strings.Repeat("0", 75) + "=\r\n0\r\n" + strings.Repeat("0", 75) + "=\r\n=C3=A0\r\n" + strings.Repeat("0", 74) + "=\r\n=C3=A0\r\n" + strings.Repeat("0", 73) + "=\r\n=C3=A0\r\n" + strings.Repeat("0", 72) + "=C3=\r\n=A0\r\n" + strings.Repeat("0", 75) + "\r\n" + strings.Repeat("0", 75) + "=\r\n0\r\n", } testMessage(t, m, 0, want) } func TestBase64LineLength(t *testing.T) { m := NewMessage(SetCharset("UTF-8"), SetEncoding(Base64)) m.SetHeader("From", "from@example.com") m.SetHeader("To", "to@example.com") m.SetBody("text/plain", strings.Repeat("0", 58)) want := &message{ from: "from@example.com", to: []string{"to@example.com"}, content: "From: from@example.com\r\n" + "To: to@example.com\r\n" + "Content-Type: text/plain; charset=UTF-8\r\n" + "Content-Transfer-Encoding: base64\r\n" + "\r\n" + strings.Repeat("MDAw", 19) + "\r\nMA==", } testMessage(t, m, 0, want) } func testMessage(t *testing.T, m *Message, bCount int, want *message) { err := Send(stubSendMail(t, bCount, want), m) if err != nil { t.Error(err) } } func stubSendMail(t *testing.T, bCount int, want *message) SendFunc { return func(from string, to []string, m io.WriterTo) error { if from != want.from { t.Fatalf("Invalid from, got %q, want %q", from, want.from) } if len(to) != len(want.to) { t.Fatalf("Invalid recipient count, \ngot %d: %q\nwant %d: %q", len(to), to, len(want.to), want.to, ) } for i := range want.to { if to[i] != want.to[i] { t.Fatalf("Invalid recipient, got %q, want %q", to[i], want.to[i], ) } } buf := new(bytes.Buffer) _, err := m.WriteTo(buf) if err != nil { t.Error(err) } got := buf.String() wantMsg := string("Mime-Version: 1.0\r\n" + "Date: Wed, 25 Jun 2014 17:46:00 +0000\r\n" + want.content) if bCount > 0 { boundaries := getBoundaries(t, bCount, got) for i, b := range boundaries { wantMsg = strings.Replace(wantMsg, "_BOUNDARY_"+strconv.Itoa(i+1)+"_", b, -1) } } compareBodies(t, got, wantMsg) return nil } } func compareBodies(t *testing.T, got, want string) { // We cannot do a simple comparison since the ordering of headers' fields // is random. gotLines := strings.Split(got, "\r\n") wantLines := strings.Split(want, "\r\n") // We only test for too many lines, missing lines are tested after if len(gotLines) > len(wantLines) { t.Fatalf("Message has too many lines, \ngot %d:\n%s\nwant %d:\n%s", len(gotLines), got, len(wantLines), want) } isInHeader := true headerStart := 0 for i, line := range wantLines { if line == gotLines[i] { if line == "" { isInHeader = false } else if !isInHeader && len(line) > 2 && line[:2] == "--" { isInHeader = true headerStart = i + 1 } continue } if !isInHeader { missingLine(t, line, got, want) } isMissing := true for j := headerStart; j < len(gotLines); j++ { if gotLines[j] == "" { break } if gotLines[j] == line { isMissing = false break } } if isMissing { missingLine(t, line, got, want) } } } func missingLine(t *testing.T, line, got, want string) { t.Fatalf("Missing line %q\ngot:\n%s\nwant:\n%s", line, got, want) } func getBoundaries(t *testing.T, count int, m string) []string { if matches := boundaryRegExp.FindAllStringSubmatch(m, count); matches != nil { boundaries := make([]string, count) for i, match := range matches { boundaries[i] = match[1] } return boundaries } t.Fatal("Boundary not found in body") return []string{""} } var boundaryRegExp = regexp.MustCompile("boundary=(\\w+)") func mockCopyFile(name string) (string, FileSetting) { return name, SetCopyFunc(func(w io.Writer) error { _, err := w.Write([]byte("Content of " + filepath.Base(name))) return err }) } func mockCopyFileWithHeader(m *Message, name string, h map[string][]string) (string, FileSetting, FileSetting) { name, f := mockCopyFile(name) return name, f, SetHeader(h) } func BenchmarkFull(b *testing.B) { discardFunc := SendFunc(func(from string, to []string, m io.WriterTo) error { _, err := m.WriteTo(ioutil.Discard) return err }) m := NewMessage() b.ResetTimer() for n := 0; n < b.N; n++ { m.SetAddressHeader("From", "from@example.com", "Señor From") m.SetHeaders(map[string][]string{ "To": {"to@example.com"}, "Cc": {"cc@example.com"}, "Bcc": {"bcc1@example.com", "bcc2@example.com"}, "Subject": {"¡Hola, señor!"}, }) m.SetBody("text/plain", "¡Hola, señor!") m.AddAlternative("text/html", "

¡Hola, señor!

") m.Attach(mockCopyFile("benchmark.txt")) m.Embed(mockCopyFile("benchmark.jpg")) if err := Send(discardFunc, m); err != nil { panic(err) } m.Reset() } }