From d103ed6ca97ca5a2669f6cf5fe4b3d2a9c945f26 Mon Sep 17 00:00:00 2001
From: Christopher Speller <crspeller@gmail.com>
Date: Wed, 17 May 2017 16:51:25 -0400
Subject: Upgrading server dependancies (#6431)

---
 vendor/gopkg.in/gomail.v2/message_test.go | 745 ++++++++++++++++++++++++++++++
 1 file changed, 745 insertions(+)
 create mode 100644 vendor/gopkg.in/gomail.v2/message_test.go

(limited to 'vendor/gopkg.in/gomail.v2/message_test.go')

diff --git a/vendor/gopkg.in/gomail.v2/message_test.go b/vendor/gopkg.in/gomail.v2/message_test.go
new file mode 100644
index 000000000..acceff2a6
--- /dev/null
+++ b/vendor/gopkg.in/gomail.v2/message_test.go
@@ -0,0 +1,745 @@
+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?= <from@example.com>\r\n" +
+			"To: =?UTF-8?q?Se=C3=B1or_To?= <to@example.com>, tobis@example.com\r\n" +
+			"Cc: \"A, B\" <cc@example.com>\r\n" +
+			"X-To: =?UTF-8?b?w6AsIGI=?= <ccbis@example.com>\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 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", "¡<b>Hola</b>, <i>señor</i>!</h1>")
+
+	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;\r\n" +
+			" 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=A1<b>Hola</b>, <i>se=C3=B1or</i>!</h1>\r\n" +
+			"--_BOUNDARY_1_--\r\n",
+	}
+
+	testMessage(t, m, 1, want)
+}
+
+func TestPartSetting(t *testing.T) {
+	m := NewMessage()
+	m.SetHeader("From", "from@example.com")
+	m.SetHeader("To", "to@example.com")
+	m.SetBody("text/plain; format=flowed", "¡Hola, señor!", SetPartEncoding(Unencoded))
+	m.AddAlternative("text/html", "¡<b>Hola</b>, <i>señor</i>!</h1>")
+
+	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;\r\n" +
+			" boundary=_BOUNDARY_1_\r\n" +
+			"\r\n" +
+			"--_BOUNDARY_1_\r\n" +
+			"Content-Type: text/plain; format=flowed; charset=UTF-8\r\n" +
+			"Content-Transfer-Encoding: 8bit\r\n" +
+			"\r\n" +
+			"¡Hola, señor!\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=A1<b>Hola</b>, <i>se=C3=B1or</i>!</h1>\r\n" +
+			"--_BOUNDARY_1_--\r\n",
+	}
+
+	testMessage(t, m, 1, 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
+	})
+	m.AddAlternativeWriter("text/html", func(w io.Writer) error {
+		_, err := w.Write([]byte("Test HTML"))
+		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: multipart/alternative;\r\n" +
+			" 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 message\r\n" +
+			"--_BOUNDARY_1_\r\n" +
+			"Content-Type: text/html; charset=UTF-8\r\n" +
+			"Content-Transfer-Encoding: quoted-printable\r\n" +
+			"\r\n" +
+			"Test HTML\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;\r\n" +
+			" 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 TestRename(t *testing.T) {
+	m := NewMessage()
+	m.SetHeader("From", "from@example.com")
+	m.SetHeader("To", "to@example.com")
+	m.SetBody("text/plain", "Test")
+	name, copy := mockCopyFile("/tmp/test.pdf")
+	rename := Rename("another.pdf")
+	m.Attach(name, copy, rename)
+
+	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;\r\n" +
+			" 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=\"another.pdf\"\r\n" +
+			"Content-Disposition: attachment; filename=\"another.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;\r\n" +
+			" 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;\r\n" +
+			" 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": {"<test-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;\r\n" +
+			" 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: <test-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: <image2.jpg>\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", "¡<b>Hola</b>, <i>señor</i>!</h1>")
+	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;\r\n" +
+			" boundary=_BOUNDARY_1_\r\n" +
+			"\r\n" +
+			"--_BOUNDARY_1_\r\n" +
+			"Content-Type: multipart/related;\r\n" +
+			" boundary=_BOUNDARY_2_\r\n" +
+			"\r\n" +
+			"--_BOUNDARY_2_\r\n" +
+			"Content-Type: multipart/alternative;\r\n" +
+			" 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=A1<b>Hola</b>, <i>se=C3=B1or</i>!</h1>\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: <image.jpg>\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 TestEmptyName(t *testing.T) {
+	m := NewMessage()
+	m.SetAddressHeader("From", "from@example.com", "")
+
+	want := &message{
+		from:    "from@example.com",
+		content: "From: from@example.com\r\n",
+	}
+
+	testMessage(t, m, 0, want)
+}
+
+func TestEmptyHeader(t *testing.T) {
+	m := NewMessage()
+	m.SetHeaders(map[string][]string{
+		"From":    {"from@example.com"},
+		"X-Empty": nil,
+	})
+
+	want := &message{
+		from: "from@example.com",
+		content: "From: from@example.com\r\n" +
+			"X-Empty:\r\n",
+	}
+
+	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", "<p>¡Hola, señor!</p>")
+		m.Attach(mockCopyFile("benchmark.txt"))
+		m.Embed(mockCopyFile("benchmark.jpg"))
+
+		if err := Send(discardFunc, m); err != nil {
+			panic(err)
+		}
+		m.Reset()
+	}
+}
-- 
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