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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package mime
import (
"errors"
"io"
"strings"
"testing"
)
func TestEncodeWord(t *testing.T) {
utf8, iso88591 := "utf-8", "iso-8859-1"
tests := []struct {
enc WordEncoder
charset string
src, exp string
}{
{QEncoding, utf8, "François-Jérôme", "=?utf-8?q?Fran=C3=A7ois-J=C3=A9r=C3=B4me?="},
{BEncoding, utf8, "Café", "=?utf-8?b?Q2Fmw6k=?="},
{QEncoding, iso88591, "La Seleção", "=?iso-8859-1?q?La_Sele=C3=A7=C3=A3o?="},
{QEncoding, utf8, "", ""},
{QEncoding, utf8, "A", "A"},
{QEncoding, iso88591, "a", "a"},
{QEncoding, utf8, "123 456", "123 456"},
{QEncoding, utf8, "\t !\"#$%&'()*+,-./ :;<>?@[\\]^_`{|}~", "\t !\"#$%&'()*+,-./ :;<>?@[\\]^_`{|}~"},
{QEncoding, utf8, strings.Repeat("é", 10), "=?utf-8?q?" + strings.Repeat("=C3=A9", 10) + "?="},
{QEncoding, utf8, strings.Repeat("é", 11), "=?utf-8?q?" + strings.Repeat("=C3=A9", 10) + "?= =?utf-8?q?=C3=A9?="},
{QEncoding, iso88591, strings.Repeat("\xe9", 22), "=?iso-8859-1?q?" + strings.Repeat("=E9", 22) + "?="},
{QEncoding, utf8, strings.Repeat("\x80", 22), "=?utf-8?q?" + strings.Repeat("=80", 21) + "?= =?utf-8?q?=80?="},
{BEncoding, iso88591, strings.Repeat("\xe9", 45), "=?iso-8859-1?b?" + strings.Repeat("6enp", 15) + "?="},
{BEncoding, utf8, strings.Repeat("\x80", 48), "=?utf-8?b?" + strings.Repeat("gICA", 15) + "?= =?utf-8?b?gICA?="},
}
for _, test := range tests {
if s := test.enc.Encode(test.charset, test.src); s != test.exp {
t.Errorf("Encode(%q) = %q, want %q", test.src, s, test.exp)
}
}
}
func TestEncodedWordLength(t *testing.T) {
tests := []struct {
enc WordEncoder
src string
}{
{QEncoding, strings.Repeat("à", 30)},
{QEncoding, strings.Repeat("é", 60)},
{BEncoding, strings.Repeat("ï", 25)},
{BEncoding, strings.Repeat("ô", 37)},
{BEncoding, strings.Repeat("\x80", 50)},
{QEncoding, "{$firstname} Bienvendio a Apostolica, aquà inicia el camino de tu"},
}
for _, test := range tests {
s := test.enc.Encode("utf-8", test.src)
wordLen := 0
for i := 0; i < len(s); i++ {
if s[i] == ' ' {
wordLen = 0
continue
}
wordLen++
if wordLen > maxEncodedWordLen {
t.Errorf("Encode(%q) has more than %d characters: %q",
test.src, maxEncodedWordLen, s)
}
}
}
}
func TestDecodeWord(t *testing.T) {
tests := []struct {
src, exp string
hasErr bool
}{
{"=?UTF-8?Q?=C2=A1Hola,_se=C3=B1or!?=", "¡Hola, señor!", false},
{"=?UTF-8?Q?Fran=C3=A7ois-J=C3=A9r=C3=B4me?=", "François-Jérôme", false},
{"=?UTF-8?q?ascii?=", "ascii", false},
{"=?utf-8?B?QW5kcsOp?=", "André", false},
{"=?ISO-8859-1?Q?Rapha=EBl_Dupont?=", "Raphaël Dupont", false},
{"=?utf-8?b?IkFudG9uaW8gSm9zw6kiIDxqb3NlQGV4YW1wbGUub3JnPg==?=", `"Antonio José" <jose@example.org>`, false},
{"=?UTF-8?A?Test?=", "", true},
{"=?UTF-8?Q?A=B?=", "", true},
{"=?UTF-8?Q?=A?=", "", true},
{"=?UTF-8?A?A?=", "", true},
{"=????=", "", true},
{"=?UTF-8???=", "", true},
{"=?UTF-8?Q??=", "", false},
}
for _, test := range tests {
dec := new(WordDecoder)
s, err := dec.Decode(test.src)
if test.hasErr && err == nil {
t.Errorf("Decode(%q) should return an error", test.src)
continue
}
if !test.hasErr && err != nil {
t.Errorf("Decode(%q): %v", test.src, err)
continue
}
if s != test.exp {
t.Errorf("Decode(%q) = %q, want %q", test.src, s, test.exp)
}
}
}
func TestDecodeHeader(t *testing.T) {
tests := []struct {
src, exp string
}{
{"=?UTF-8?Q?=C2=A1Hola,_se=C3=B1or!?=", "¡Hola, señor!"},
{"=?UTF-8?Q?Fran=C3=A7ois-J=C3=A9r=C3=B4me?=", "François-Jérôme"},
{"=?UTF-8?q?ascii?=", "ascii"},
{"=?utf-8?B?QW5kcsOp?=", "André"},
{"=?ISO-8859-1?Q?Rapha=EBl_Dupont?=", "Raphaël Dupont"},
{"Jean", "Jean"},
{"=?utf-8?b?IkFudG9uaW8gSm9zw6kiIDxqb3NlQGV4YW1wbGUub3JnPg==?=", `"Antonio José" <jose@example.org>`},
{"=?UTF-8?A?Test?=", "=?UTF-8?A?Test?="},
{"=?UTF-8?Q?A=B?=", "=?UTF-8?Q?A=B?="},
{"=?UTF-8?Q?=A?=", "=?UTF-8?Q?=A?="},
{"=?UTF-8?A?A?=", "=?UTF-8?A?A?="},
// Incomplete words
{"=?", "=?"},
{"=?UTF-8?", "=?UTF-8?"},
{"=?UTF-8?=", "=?UTF-8?="},
{"=?UTF-8?Q", "=?UTF-8?Q"},
{"=?UTF-8?Q?", "=?UTF-8?Q?"},
{"=?UTF-8?Q?=", "=?UTF-8?Q?="},
{"=?UTF-8?Q?A", "=?UTF-8?Q?A"},
{"=?UTF-8?Q?A?", "=?UTF-8?Q?A?"},
// Tests from RFC 2047
{"=?ISO-8859-1?Q?a?=", "a"},
{"=?ISO-8859-1?Q?a?= b", "a b"},
{"=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?=", "ab"},
{"=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?=", "ab"},
{"=?ISO-8859-1?Q?a?= \r\n\t =?ISO-8859-1?Q?b?=", "ab"},
{"=?ISO-8859-1?Q?a_b?=", "a b"},
}
for _, test := range tests {
dec := new(WordDecoder)
s, err := dec.DecodeHeader(test.src)
if err != nil {
t.Errorf("DecodeHeader(%q): %v", test.src, err)
}
if s != test.exp {
t.Errorf("DecodeHeader(%q) = %q, want %q", test.src, s, test.exp)
}
}
}
func TestCharsetDecoder(t *testing.T) {
tests := []struct {
src string
want string
charsets []string
content []string
}{
{"=?utf-8?b?Q2Fmw6k=?=", "Café", nil, nil},
{"=?ISO-8859-1?Q?caf=E9?=", "café", nil, nil},
{"=?US-ASCII?Q?foo_bar?=", "foo bar", nil, nil},
{"=?utf-8?Q?=?=", "=?utf-8?Q?=?=", nil, nil},
{"=?utf-8?Q?=A?=", "=?utf-8?Q?=A?=", nil, nil},
{
"=?ISO-8859-15?Q?f=F5=F6?= =?windows-1252?Q?b=E0r?=",
"f\xf5\xf6b\xe0r",
[]string{"iso-8859-15", "windows-1252"},
[]string{"f\xf5\xf6", "b\xe0r"},
},
}
for _, test := range tests {
i := 0
dec := &WordDecoder{
CharsetReader: func(charset string, input io.Reader) (io.Reader, error) {
if charset != test.charsets[i] {
t.Errorf("DecodeHeader(%q), got charset %q, want %q", test.src, charset, test.charsets[i])
}
content, err := io.ReadAll(input)
if err != nil {
t.Errorf("DecodeHeader(%q), error in reader: %v", test.src, err)
}
got := string(content)
if got != test.content[i] {
t.Errorf("DecodeHeader(%q), got content %q, want %q", test.src, got, test.content[i])
}
i++
return strings.NewReader(got), nil
},
}
got, err := dec.DecodeHeader(test.src)
if err != nil {
t.Errorf("DecodeHeader(%q): %v", test.src, err)
}
if got != test.want {
t.Errorf("DecodeHeader(%q) = %q, want %q", test.src, got, test.want)
}
}
}
func TestCharsetDecoderError(t *testing.T) {
dec := &WordDecoder{
CharsetReader: func(charset string, input io.Reader) (io.Reader, error) {
return nil, errors.New("Test error")
},
}
if _, err := dec.DecodeHeader("=?charset?Q?foo?="); err == nil {
t.Error("DecodeHeader should return an error")
}
}
func BenchmarkQEncodeWord(b *testing.B) {
for i := 0; i < b.N; i++ {
QEncoding.Encode("UTF-8", "¡Hola, señor!")
}
}
func BenchmarkQDecodeWord(b *testing.B) {
dec := new(WordDecoder)
for i := 0; i < b.N; i++ {
dec.Decode("=?utf-8?q?=C2=A1Hola,_se=C3=B1or!?=")
}
}
func BenchmarkQDecodeHeader(b *testing.B) {
dec := new(WordDecoder)
for i := 0; i < b.N; i++ {
dec.DecodeHeader("=?utf-8?q?=C2=A1Hola,_se=C3=B1or!?=")
}
}
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