/
email_test.go
664 lines (583 loc) · 19.9 KB
/
email_test.go
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// This file was forked from:
// https://github.com/jordan-wright/email (MIT License, Copyright (c) 2013 Jordan Wright).
package smtppool
import (
"bufio"
"strings"
"testing"
"bytes"
"crypto/rand"
"io"
"io/ioutil"
"mime"
"mime/multipart"
"mime/quotedprintable"
"net/mail"
"net/textproto"
)
func prepareEmail() Email {
e := Email{}
e.From = "Jordan Wright <test@example.com>"
e.To = []string{"Bécassine <test@example.com>"}
e.Bcc = []string{"test_bcc@example.com"}
e.Cc = []string{"test_cc@example.com"}
e.Subject = "Awesome Subject"
return e
}
func basicTests(t *testing.T, e Email) *mail.Message {
raw, err := e.Bytes()
if err != nil {
t.Fatal("Failed to render message: ", e)
}
msg, err := mail.ReadMessage(bytes.NewBuffer(raw))
if err != nil {
t.Fatal("Could not parse rendered message: ", err)
}
toAddr := mail.Address{
Name: "Bécassine",
Address: "test@example.com",
}
fromAddr := mail.Address{
Name: "Jordan Wright",
Address: "test@example.com",
}
ccAddr := mail.Address{
Name: "",
Address: "test_cc@example.com",
}
expectedHeaders := map[string]string{
"To": toAddr.String(),
"From": fromAddr.String(),
"Cc": ccAddr.String(),
"Subject": "Awesome Subject",
}
for header, expected := range expectedHeaders {
if val := msg.Header.Get(header); val != expected {
t.Errorf("Wrong value for message header %s: %v != %v", header, val, expected)
}
}
return msg
}
func TestEmailText(t *testing.T) {
e := prepareEmail()
e.Text = []byte("Text Body is, of course, supported!\n")
msg := basicTests(t, e)
// Were the right headers set?
ct := msg.Header.Get("Content-type")
mt, _, err := mime.ParseMediaType(ct)
if err != nil {
t.Fatal("Content-type header is invalid: ", ct)
} else if mt != "text/plain" {
t.Fatalf("Content-type expected \"text/plain\", not %v", mt)
}
}
func TestEmailWithHTMLAttachments(t *testing.T) {
e := prepareEmail()
// Set plain text to exercise "mime/alternative"
e.Text = []byte("Text Body is, of course, supported!\n")
e.HTML = []byte("<html><body>This is a text.</body></html>")
// Set HTML attachment to exercise "mime/related".
attachment, err := e.Attach(bytes.NewBufferString("Rad attachment"), "rad.txt", "image/png; charset=utf-8")
if err != nil {
t.Fatal("Could not add an attachment to the message: ", err)
}
attachment.HTMLRelated = true
b, err := e.Bytes()
if err != nil {
t.Fatal("Could not serialize e-mail:", err)
}
// Print the bytes for ocular validation and make sure no errors.
//fmt.Println(string(b))
// TODO: Verify the attachments.
s := trimReader{rd: bytes.NewBuffer(b)}
tp := textproto.NewReader(bufio.NewReader(s))
// Parse the main headers
hdrs, err := tp.ReadMIMEHeader()
if err != nil {
t.Fatal("Could not parse the headers:", err)
}
// Recursively parse the MIME parts
ps, err := parseMIMEParts(hdrs, tp.R)
if err != nil {
t.Fatal("Could not parse the MIME parts recursively:", err)
}
plainTextFound := false
htmlFound := false
imageFound := false
if expected, actual := 3, len(ps); actual != expected {
t.Error("Unexpected number of parts. Expected:", expected, "Was:", actual)
}
for _, part := range ps {
// part has "header" and "body []byte"
ct := part.header.Get("Content-Type")
if strings.Contains(ct, "image/png") {
imageFound = true
}
if strings.Contains(ct, "text/html") {
htmlFound = true
}
if strings.Contains(ct, "text/plain") {
plainTextFound = true
}
}
if !plainTextFound {
t.Error("Did not find plain text part.")
}
if !htmlFound {
t.Error("Did not find HTML part.")
}
if !imageFound {
t.Error("Did not find image part.")
}
}
func TestEmailHTML(t *testing.T) {
e := prepareEmail()
e.HTML = []byte("<h1>Fancy Html is supported, too!</h1>\n")
msg := basicTests(t, e)
// Were the right headers set?
ct := msg.Header.Get("Content-type")
mt, _, err := mime.ParseMediaType(ct)
if err != nil {
t.Fatalf("Content-type header is invalid: %#v", ct)
} else if mt != "text/html" {
t.Fatalf("Content-type expected \"text/html\", not %v", mt)
}
}
func TestEmailTextAttachment(t *testing.T) {
e := prepareEmail()
e.Text = []byte("Text Body is, of course, supported!\n")
_, err := e.Attach(bytes.NewBufferString("Rad attachment"), "rad.txt", "text/plain; charset=utf-8")
if err != nil {
t.Fatal("Could not add an attachment to the message: ", err)
}
msg := basicTests(t, e)
// Were the right headers set?
ct := msg.Header.Get("Content-type")
mt, params, err := mime.ParseMediaType(ct)
if err != nil {
t.Fatal("Content-type header is invalid: ", ct)
} else if mt != "multipart/mixed" {
t.Fatalf("Content-type expected \"multipart/mixed\", not %v", mt)
}
b := params["boundary"]
if b == "" {
t.Fatalf("Invalid or missing boundary parameter: %#v", b)
}
if len(params) != 1 {
t.Fatal("Unexpected content-type parameters")
}
// Is the generated message parsable?
mixed := multipart.NewReader(msg.Body, params["boundary"])
text, err := mixed.NextPart()
if err != nil {
t.Fatalf("Could not find text component of email: %s", err)
}
// Does the text portion match what we expect?
mt, _, err = mime.ParseMediaType(text.Header.Get("Content-type"))
if err != nil {
t.Fatal("Could not parse message's Content-Type")
} else if mt != "text/plain" {
t.Fatal("Message missing text/plain")
}
plainText, err := ioutil.ReadAll(text)
if err != nil {
t.Fatal("Could not read plain text component of message: ", err)
}
if !bytes.Equal(plainText, []byte("Text Body is, of course, supported!\r\n")) {
t.Fatalf("Plain text is broken: %#q", plainText)
}
// Check attachments.
_, err = mixed.NextPart()
if err != nil {
t.Fatalf("Could not find attachment component of email: %s", err)
}
if _, err = mixed.NextPart(); err != io.EOF {
t.Error("Expected only text and one attachment!")
}
}
func TestEmailTextHtmlAttachment(t *testing.T) {
e := prepareEmail()
e.Text = []byte("Text Body is, of course, supported!\n")
e.HTML = []byte("<h1>Fancy Html is supported, too!</h1>\n")
_, err := e.Attach(bytes.NewBufferString("Rad attachment"), "rad.txt", "text/plain; charset=utf-8")
if err != nil {
t.Fatal("Could not add an attachment to the message: ", err)
}
msg := basicTests(t, e)
// Were the right headers set?
ct := msg.Header.Get("Content-type")
mt, params, err := mime.ParseMediaType(ct)
if err != nil {
t.Fatal("Content-type header is invalid: ", ct)
} else if mt != "multipart/mixed" {
t.Fatalf("Content-type expected \"multipart/mixed\", not %v", mt)
}
b := params["boundary"]
if b == "" {
t.Fatal("Unexpected empty boundary parameter")
}
if len(params) != 1 {
t.Fatal("Unexpected content-type parameters")
}
// Is the generated message parsable?
mixed := multipart.NewReader(msg.Body, params["boundary"])
text, err := mixed.NextPart()
if err != nil {
t.Fatalf("Could not find text component of email: %s", err)
}
// Does the text portion match what we expect?
mt, params, err = mime.ParseMediaType(text.Header.Get("Content-type"))
if err != nil {
t.Fatal("Could not parse message's Content-Type")
} else if mt != "multipart/alternative" {
t.Fatal("Message missing multipart/alternative")
}
mpReader := multipart.NewReader(text, params["boundary"])
part, err := mpReader.NextPart()
if err != nil {
t.Fatal("Could not read plain text component of message: ", err)
}
plainText, err := ioutil.ReadAll(part)
if err != nil {
t.Fatal("Could not read plain text component of message: ", err)
}
if !bytes.Equal(plainText, []byte("Text Body is, of course, supported!\r\n")) {
t.Fatalf("Plain text is broken: %#q", plainText)
}
// Check attachments.
_, err = mixed.NextPart()
if err != nil {
t.Fatalf("Could not find attachment component of email: %s", err)
}
if _, err = mixed.NextPart(); err != io.EOF {
t.Error("Expected only text and one attachment!")
}
}
func TestEmailAttachment(t *testing.T) {
e := prepareEmail()
_, err := e.Attach(bytes.NewBufferString("Rad attachment"), "rad.txt", "text/plain; charset=utf-8")
if err != nil {
t.Fatal("Could not add an attachment to the message: ", err)
}
msg := basicTests(t, e)
// Were the right headers set?
ct := msg.Header.Get("Content-type")
mt, params, err := mime.ParseMediaType(ct)
if err != nil {
t.Fatal("Content-type header is invalid: ", ct)
} else if mt != "multipart/mixed" {
t.Fatalf("Content-type expected \"multipart/mixed\", not %v", mt)
}
b := params["boundary"]
if b == "" {
t.Fatal("Unexpected empty boundary parameter")
}
if len(params) != 1 {
t.Fatal("Unexpected content-type parameters")
}
// Is the generated message parsable?
mixed := multipart.NewReader(msg.Body, params["boundary"])
// Check attachments.
_, err = mixed.NextPart()
if err != nil {
t.Fatalf("Could not find attachment component of email: %s", err)
}
if _, err = mixed.NextPart(); err != io.EOF {
t.Error("Expected only one attachment!")
}
}
func TestEmailFromReader(t *testing.T) {
ex := Email{
Subject: "Test Subject",
To: []string{"Jordan Wright <jmwright798@gmail.com>"},
From: "Jordan Wright <jmwright798@gmail.com>",
Text: []byte("This is a test email with HTML Formatting. It also has very long lines so\nthat the content must be wrapped if using quoted-printable decoding.\n"),
HTML: []byte("<div dir=\"ltr\">This is a test email with <b>HTML Formatting.</b>\u00a0It also has very long lines so that the content must be wrapped if using quoted-printable decoding.</div>\n"),
}
raw := []byte(`
MIME-Version: 1.0
Subject: Test Subject
From: Jordan Wright <jmwright798@gmail.com>
To: Jordan Wright <jmwright798@gmail.com>
Content-Type: multipart/alternative; boundary=001a114fb3fc42fd6b051f834280
--001a114fb3fc42fd6b051f834280
Content-Type: text/plain; charset=UTF-8
This is a test email with HTML Formatting. It also has very long lines so
that the content must be wrapped if using quoted-printable decoding.
--001a114fb3fc42fd6b051f834280
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">This is a test email with <b>HTML Formatting.</b>=C2=A0It =
also has very long lines so that the content must be wrapped if using quote=
d-printable decoding.</div>
--001a114fb3fc42fd6b051f834280--`)
e, err := NewEmailFromReader(bytes.NewReader(raw))
if err != nil {
t.Fatalf("Error creating email %s", err.Error())
}
if e.Subject != ex.Subject {
t.Fatalf("Incorrect subject. %#q != %#q", e.Subject, ex.Subject)
}
if !bytes.Equal(e.Text, ex.Text) {
t.Fatalf("Incorrect text: %#q != %#q", e.Text, ex.Text)
}
if !bytes.Equal(e.HTML, ex.HTML) {
t.Fatalf("Incorrect HTML: %#q != %#q", e.HTML, ex.HTML)
}
if e.From != ex.From {
t.Fatalf("Incorrect \"From\": %#q != %#q", e.From, ex.From)
}
}
func TestNonAsciiEmailFromReader(t *testing.T) {
ex := Email{
Subject: "Test Subject",
To: []string{"Anaïs <anais@example.org>"},
Cc: []string{"Patrik Fältström <paf@example.com>"},
From: "Mrs Valérie Dupont <valerie.dupont@example.com>",
Text: []byte("This is a test message!"),
}
raw := []byte(`
MIME-Version: 1.0
Subject: =?UTF-8?Q?Test Subject?=
From: Mrs =?ISO-8859-1?Q?Val=C3=A9rie=20Dupont?= <valerie.dupont@example.com>
To: =?utf-8?q?Ana=C3=AFs?= <anais@example.org>
Cc: =?ISO-8859-1?Q?Patrik_F=E4ltstr=F6m?= <paf@example.com>
Content-type: text/plain; charset=ISO-8859-1
This is a test message!`)
e, err := NewEmailFromReader(bytes.NewReader(raw))
if err != nil {
t.Fatalf("Error creating email %s", err.Error())
}
if e.Subject != ex.Subject {
t.Fatalf("Incorrect subject. %#q != %#q", e.Subject, ex.Subject)
}
if e.From != ex.From {
t.Fatalf("Incorrect \"From\": %#q != %#q", e.From, ex.From)
}
if e.To[0] != ex.To[0] {
t.Fatalf("Incorrect \"To\": %#q != %#q", e.To, ex.To)
}
if e.Cc[0] != ex.Cc[0] {
t.Fatalf("Incorrect \"Cc\": %#q != %#q", e.Cc, ex.Cc)
}
}
func TestNonMultipartEmailFromReader(t *testing.T) {
ex := Email{
Text: []byte("This is a test message!"),
Subject: "Example Subject (no MIME Type)",
Headers: textproto.MIMEHeader{},
}
ex.Headers.Add("Content-Type", "text/plain; charset=us-ascii")
ex.Headers.Add("Message-ID", "<foobar@example.com>")
raw := []byte(`From: "Foo Bar" <foobar@example.com>
Content-Type: text/plain
To: foobar@example.com
Subject: Example Subject (no MIME Type)
Message-ID: <foobar@example.com>
This is a test message!`)
e, err := NewEmailFromReader(bytes.NewReader(raw))
if err != nil {
t.Fatalf("Error creating email %s", err.Error())
}
if ex.Subject != e.Subject {
t.Errorf("Incorrect subject. %#q != %#q\n", ex.Subject, e.Subject)
}
if !bytes.Equal(ex.Text, e.Text) {
t.Errorf("Incorrect body. %#q != %#q\n", ex.Text, e.Text)
}
if ex.Headers.Get("Message-ID") != e.Headers.Get("Message-ID") {
t.Errorf("Incorrect message ID. %#q != %#q\n", ex.Headers.Get("Message-ID"), e.Headers.Get("Message-ID"))
}
}
func TestBase64EmailFromReader(t *testing.T) {
ex := Email{
Subject: "Test Subject",
To: []string{"Jordan Wright <jmwright798@gmail.com>"},
From: "Jordan Wright <jmwright798@gmail.com>",
Text: []byte("This is a test email with HTML Formatting. It also has very long lines so that the content must be wrapped if using quoted-printable decoding."),
HTML: []byte("<div dir=\"ltr\">This is a test email with <b>HTML Formatting.</b>\u00a0It also has very long lines so that the content must be wrapped if using quoted-printable decoding.</div>\n"),
}
raw := []byte(`
MIME-Version: 1.0
Subject: Test Subject
From: Jordan Wright <jmwright798@gmail.com>
To: Jordan Wright <jmwright798@gmail.com>
Content-Type: multipart/alternative; boundary=001a114fb3fc42fd6b051f834280
--001a114fb3fc42fd6b051f834280
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64
VGhpcyBpcyBhIHRlc3QgZW1haWwgd2l0aCBIVE1MIEZvcm1hdHRpbmcuIEl0IGFsc28gaGFzIHZl
cnkgbG9uZyBsaW5lcyBzbyB0aGF0IHRoZSBjb250ZW50IG11c3QgYmUgd3JhcHBlZCBpZiB1c2lu
ZyBxdW90ZWQtcHJpbnRhYmxlIGRlY29kaW5nLg==
--001a114fb3fc42fd6b051f834280
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">This is a test email with <b>HTML Formatting.</b>=C2=A0It =
also has very long lines so that the content must be wrapped if using quote=
d-printable decoding.</div>
--001a114fb3fc42fd6b051f834280--`)
e, err := NewEmailFromReader(bytes.NewReader(raw))
if err != nil {
t.Fatalf("Error creating email %s", err.Error())
}
if e.Subject != ex.Subject {
t.Fatalf("Incorrect subject. %#q != %#q", e.Subject, ex.Subject)
}
if !bytes.Equal(e.Text, ex.Text) {
t.Fatalf("Incorrect text: %#q != %#q", e.Text, ex.Text)
}
if !bytes.Equal(e.HTML, ex.HTML) {
t.Fatalf("Incorrect HTML: %#q != %#q", e.HTML, ex.HTML)
}
if e.From != ex.From {
t.Fatalf("Incorrect \"From\": %#q != %#q", e.From, ex.From)
}
}
func Test_base64Wrap(t *testing.T) {
file := "I'm a file long enough to force the function to wrap a\n" +
"couple of lines, but I stop short of the end of one line and\n" +
"have some padding dangling at the end."
encoded := "SSdtIGEgZmlsZSBsb25nIGVub3VnaCB0byBmb3JjZSB0aGUgZnVuY3Rpb24gdG8gd3JhcCBhCmNv\r\n" +
"dXBsZSBvZiBsaW5lcywgYnV0IEkgc3RvcCBzaG9ydCBvZiB0aGUgZW5kIG9mIG9uZSBsaW5lIGFu\r\n" +
"ZApoYXZlIHNvbWUgcGFkZGluZyBkYW5nbGluZyBhdCB0aGUgZW5kLg==\r\n"
var buf bytes.Buffer
base64Wrap(&buf, []byte(file))
if !bytes.Equal(buf.Bytes(), []byte(encoded)) {
t.Fatalf("Encoded file does not match expected: %#q != %#q", string(buf.Bytes()), encoded)
}
}
// *Since the mime library in use by ```email``` is now in the stdlib, this test is deprecated
func Test_quotedPrintEncode(t *testing.T) {
var buf bytes.Buffer
text := []byte("Dear reader!\n\n" +
"This is a test email to try and capture some of the corner cases that exist within\n" +
"the quoted-printable encoding.\n" +
"There are some wacky parts like =, and this input assumes UNIX line breaks so\r\n" +
"it can come out a little weird. Also, we need to support unicode so here's a fish: 🐟\n")
expected := []byte("Dear reader!\r\n\r\n" +
"This is a test email to try and capture some of the corner cases that exist=\r\n" +
" within\r\n" +
"the quoted-printable encoding.\r\n" +
"There are some wacky parts like =3D, and this input assumes UNIX line break=\r\n" +
"s so\r\n" +
"it can come out a little weird. Also, we need to support unicode so here's=\r\n" +
" a fish: =F0=9F=90=9F\r\n")
qp := quotedprintable.NewWriter(&buf)
if _, err := qp.Write(text); err != nil {
t.Fatal("quotePrintEncode: ", err)
}
if err := qp.Close(); err != nil {
t.Fatal("Error closing writer", err)
}
if b := buf.Bytes(); !bytes.Equal(b, expected) {
t.Errorf("quotedPrintEncode generated incorrect results: %#q != %#q", b, expected)
}
}
func TestMultipartNoContentType(t *testing.T) {
raw := []byte(`From: Mikhail Gusarov <dottedmag@dottedmag.net>
To: notmuch@notmuchmail.org
References: <20091117190054.GU3165@dottiness.seas.harvard.edu>
Date: Wed, 18 Nov 2009 01:02:38 +0600
Message-ID: <87iqd9rn3l.fsf@vertex.dottedmag>
MIME-Version: 1.0
Subject: Re: [notmuch] Working with Maildir storage?
Content-Type: multipart/mixed; boundary="===============1958295626=="
--===============1958295626==
Content-Type: multipart/signed; boundary="=-=-=";
micalg=pgp-sha1; protocol="application/pgp-signature"
--=-=-=
Content-Transfer-Encoding: quoted-printable
Twas brillig at 14:00:54 17.11.2009 UTC-05 when lars@seas.harvard.edu did g=
yre and gimble:
--=-=-=
Content-Type: application/pgp-signature
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
iQIcBAEBAgAGBQJLAvNOAAoJEJ0g9lA+M4iIjLYQAKp0PXEgl3JMOEBisH52AsIK
=/ksP
-----END PGP SIGNATURE-----
--=-=-=--
--===============1958295626==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Testing!
--===============1958295626==--
`)
e, err := NewEmailFromReader(bytes.NewReader(raw))
if err != nil {
t.Fatalf("Error when parsing email %s", err.Error())
}
if !bytes.Equal(e.Text, []byte("Testing!")) {
t.Fatalf("Error incorrect text: %#q != %#q\n", e.Text, "Testing!")
}
}
// *Since the mime library in use by ```email``` is now in the stdlib, this test is deprecated
func Test_quotedPrintDecode(t *testing.T) {
text := []byte("Dear reader!\r\n\r\n" +
"This is a test email to try and capture some of the corner cases that exist=\r\n" +
" within\r\n" +
"the quoted-printable encoding.\r\n" +
"There are some wacky parts like =3D, and this input assumes UNIX line break=\r\n" +
"s so\r\n" +
"it can come out a little weird. Also, we need to support unicode so here's=\r\n" +
" a fish: =F0=9F=90=9F\r\n")
expected := []byte("Dear reader!\r\n\r\n" +
"This is a test email to try and capture some of the corner cases that exist within\r\n" +
"the quoted-printable encoding.\r\n" +
"There are some wacky parts like =, and this input assumes UNIX line breaks so\r\n" +
"it can come out a little weird. Also, we need to support unicode so here's a fish: 🐟\r\n")
qp := quotedprintable.NewReader(bytes.NewReader(text))
got, err := ioutil.ReadAll(qp)
if err != nil {
t.Fatal("quotePrintDecode: ", err)
}
if !bytes.Equal(got, expected) {
t.Errorf("quotedPrintDecode generated incorrect results: %#q != %#q", got, expected)
}
}
func Benchmark_base64Wrap(b *testing.B) {
// Reasonable base case; 128K random bytes
file := make([]byte, 128*1024)
if _, err := rand.Read(file); err != nil {
panic(err)
}
for i := 0; i <= b.N; i++ {
base64Wrap(ioutil.Discard, file)
}
}
func TestParseSender(t *testing.T) {
var cases = []struct {
e Email
want string
haserr bool
}{
{
Email{From: "from@test.com"},
"from@test.com",
false,
},
{
Email{Sender: "sender@test.com", From: "from@test.com"},
"sender@test.com",
false,
},
{
Email{Sender: "bad_address_sender"},
"",
true,
},
{
Email{Sender: "good@sender.com", From: "bad_address_from"},
"good@sender.com",
false,
},
}
for i, testcase := range cases {
got, err := testcase.e.parseSender()
if got != testcase.want || (err != nil) != testcase.haserr {
t.Errorf(`%d: got %s != want %s or error "%t" != "%t"`, i+1, got, testcase.want, err != nil, testcase.haserr)
}
}
}