Function TestParseEmail_CharsetConversion

modules/smtp/handler_test.go:176–222

(t *testing.T)

}

func TestParseEmail_CharsetConversion(t *testing.T) {
	t.Run("single part windows-1250", func(t *testing.T) {
		// "café" in windows-1250: 0x63 0x61 0x66 0xe9
		body := string([]byte{0x63, 0x61, 0x66, 0xe9})
		raw := []byte("From: sender@example.com\r\nTo: recipient@example.com\r\nSubject: Test\r\nContent-Type: text/plain; charset=windows-1250\r\n\r\n" + body)

		parsed, _, err := parseEmail(raw, []string{"recipient@example.com"})
		if err != nil {
			t.Fatal(err)
		}
		if parsed.Text != "café" {
			t.Errorf("Text = %q, want %q", parsed.Text, "café")
		}
	})

	t.Run("single part html iso-8859-2", func(t *testing.T) {
		// "Vaše zpráva" in iso-8859-2: V=56 a=61 š=B9 e=65 sp=20 z=7A p=70 r=72 á=E1 v=76 a=61
		body := string([]byte{0x56, 0x61, 0xB9, 0x65, 0x20, 0x7A, 0x70, 0x72, 0xE1, 0x76, 0x61})
		raw := []byte("From: sender@example.com\r\nTo: recipient@example.com\r\nSubject: Test\r\nContent-Type: text/html; charset=iso-8859-2\r\n\r\n" + body)

		parsed, _, err := parseEmail(raw, []string{"recipient@example.com"})
		if err != nil {
			t.Fatal(err)
		}
		want := "Vaše zpráva"
		if parsed.HTML != want {
			t.Errorf("HTML = %q, want %q", parsed.HTML, want)
		}
	})

	t.Run("multipart with charset", func(t *testing.T) {
		// "café" in iso-8859-1
		body := string([]byte{0x63, 0x61, 0x66, 0xe9})
		raw := []byte("From: sender@example.com\r\nTo: recipient@example.com\r\nSubject: Test\r\nContent-Type: multipart/alternative; boundary=\"bnd\"\r\n\r\n--bnd\r\nContent-Type: text/plain; charset=iso-8859-1\r\n\r\n" + body + "\r\n--bnd\r\nContent-Type: text/html; charset=iso-8859-1\r\n\r\n<p>" + body + "</p>\r\n--bnd--")

		parsed, _, err := parseEmail(raw, []string{"recipient@example.com"})
		if err != nil {
			t.Fatal(err)
		}
		if !strings.Contains(parsed.Text, "café") {
			t.Errorf("Text = %q, want to contain %q", parsed.Text, "café")
		}
		if !strings.Contains(parsed.HTML, "café") {
			t.Errorf("HTML = %q, want to contain %q", parsed.HTML, "café")
		}
	})
}

func TestParseAddresses(t *testing.T) {
	t.Run("name and email", func(t *testing.T) {