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-rw-r--r--Godeps/_workspace/src/golang.org/x/text/encoding/encoding_test.go1033
1 files changed, 0 insertions, 1033 deletions
diff --git a/Godeps/_workspace/src/golang.org/x/text/encoding/encoding_test.go b/Godeps/_workspace/src/golang.org/x/text/encoding/encoding_test.go
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index a5a96d104..000000000
--- a/Godeps/_workspace/src/golang.org/x/text/encoding/encoding_test.go
+++ /dev/null
@@ -1,1033 +0,0 @@
-// Copyright 2013 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 encoding_test
-
-import (
- "bytes"
- "fmt"
- "io"
- "io/ioutil"
- "strings"
- "testing"
-
- "golang.org/x/text/encoding"
- "golang.org/x/text/encoding/charmap"
- "golang.org/x/text/encoding/japanese"
- "golang.org/x/text/encoding/korean"
- "golang.org/x/text/encoding/simplifiedchinese"
- "golang.org/x/text/encoding/traditionalchinese"
- "golang.org/x/text/encoding/unicode"
- "golang.org/x/text/transform"
-)
-
-func trim(s string) string {
- if len(s) < 120 {
- return s
- }
- return s[:50] + "..." + s[len(s)-50:]
-}
-
-var basicTestCases = []struct {
- e encoding.Encoding
- encPrefix string
- encoded string
- utf8 string
-}{
- // The encoded forms can be verified by the iconv program:
- // $ echo 月日は百代 | iconv -f UTF-8 -t SHIFT-JIS | xxd
-
- // Charmap tests.
- {
- e: charmap.CodePage437,
- encoded: "H\x82ll\x93 \x9d\xa7\xf4\x9c\xbe",
- utf8: "Héllô ¥º⌠£╛",
- },
- {
- e: charmap.CodePage866,
- encoded: "H\xf3\xd3o \x98\xfd\x9f\xdd\xa1",
- utf8: "Hє╙o Ш¤Я▌б",
- },
- {
- e: charmap.ISO8859_2,
- encoded: "Hel\xe5\xf5",
- utf8: "Helĺő",
- },
- {
- e: charmap.ISO8859_3,
- encoded: "He\xbd\xd4",
- utf8: "He½Ô",
- },
- {
- e: charmap.ISO8859_4,
- encoded: "Hel\xb6\xf8",
- utf8: "Helļø",
- },
- {
- e: charmap.ISO8859_5,
- encoded: "H\xd7\xc6o",
- utf8: "HзЦo",
- },
- {
- e: charmap.ISO8859_6,
- encoded: "Hel\xc2\xc9",
- utf8: "Helآة",
- },
- {
- e: charmap.ISO8859_7,
- encoded: "H\xeel\xebo",
- utf8: "Hξlλo",
- },
- {
- e: charmap.ISO8859_8,
- encoded: "Hel\xf5\xed",
- utf8: "Helץם",
- },
- {
- e: charmap.ISO8859_10,
- encoded: "H\xea\xbfo",
- utf8: "Hęŋo",
- },
- {
- e: charmap.ISO8859_13,
- encoded: "H\xe6l\xf9o",
- utf8: "Hęlło",
- },
- {
- e: charmap.ISO8859_14,
- encoded: "He\xfe\xd0o",
- utf8: "HeŷŴo",
- },
- {
- e: charmap.ISO8859_15,
- encoded: "H\xa4ll\xd8",
- utf8: "H€llØ",
- },
- {
- e: charmap.ISO8859_16,
- encoded: "H\xe6ll\xbd",
- utf8: "Hællœ",
- },
- {
- e: charmap.KOI8R,
- encoded: "He\x93\xad\x9c",
- utf8: "He⌠╜°",
- },
- {
- e: charmap.KOI8U,
- encoded: "He\x93\xad\x9c",
- utf8: "He⌠ґ°",
- },
- {
- e: charmap.Macintosh,
- encoded: "He\xdf\xd7",
- utf8: "Hefl◊",
- },
- {
- e: charmap.MacintoshCyrillic,
- encoded: "He\xbe\x94",
- utf8: "HeЊФ",
- },
- {
- e: charmap.Windows874,
- encoded: "He\xb7\xf0",
- utf8: "Heท๐",
- },
- {
- e: charmap.Windows1250,
- encoded: "He\xe5\xe5o",
- utf8: "Heĺĺo",
- },
- {
- e: charmap.Windows1251,
- encoded: "H\xball\xfe",
- utf8: "Hєllю",
- },
- {
- e: charmap.Windows1252,
- encoded: "H\xe9ll\xf4 \xa5\xbA\xae\xa3\xd0",
- utf8: "Héllô ¥º®£Ð",
- },
- {
- e: charmap.Windows1253,
- encoded: "H\xe5ll\xd6",
- utf8: "HεllΦ",
- },
- {
- e: charmap.Windows1254,
- encoded: "\xd0ello",
- utf8: "Ğello",
- },
- {
- e: charmap.Windows1255,
- encoded: "He\xd4o",
- utf8: "Heװo",
- },
- {
- e: charmap.Windows1256,
- encoded: "H\xdbllo",
- utf8: "Hغllo",
- },
- {
- e: charmap.Windows1257,
- encoded: "He\xeflo",
- utf8: "Heļlo",
- },
- {
- e: charmap.Windows1258,
- encoded: "Hell\xf5",
- utf8: "Hellơ",
- },
- {
- e: charmap.XUserDefined,
- encoded: "\x00\x40\x7f\x80\xab\xff",
- utf8: "\u0000\u0040\u007f\uf780\uf7ab\uf7ff",
- },
-
- // UTF-16 tests.
- {
- e: unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM),
- encoded: "\x00\x57\x00\xe4\xd8\x35\xdd\x65",
- utf8: "\x57\u00e4\U0001d565",
- },
- {
- e: utf16BEEB,
- encPrefix: "\xfe\xff",
- encoded: "\x00\x57\x00\xe4\xd8\x35\xdd\x65",
- utf8: "\x57\u00e4\U0001d565",
- },
- {
- e: unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM),
- encoded: "\x57\x00\xe4\x00\x35\xd8\x65\xdd",
- utf8: "\x57\u00e4\U0001d565",
- },
- {
- e: utf16LEEB,
- encPrefix: "\xff\xfe",
- encoded: "\x57\x00\xe4\x00\x35\xd8\x65\xdd",
- utf8: "\x57\u00e4\U0001d565",
- },
-
- // Chinese tests.
- //
- // "\u0081\u00de\u00df\u00e0\u00e1\u00e2\u00e3\uffff\U00010000" is a
- // nonsense string that contains GB18030 encodable codepoints of which
- // only U+00E0 and U+00E1 are GBK encodable.
- //
- // "A\u3000\u554a\u4e02\u4e90\u72dc\u7349\u02ca\u2588Z€" is a nonsense
- // string that contains ASCII and GBK encodable codepoints from Levels
- // 1-5 as well as the Euro sign.
- //
- // "A\u43f0\u4c32\U00027267\u3000\U0002910d\u79d4Z€" is a nonsense string
- // that contains ASCII and Big5 encodable codepoints from the Basic
- // Multilingual Plane and the Supplementary Ideographic Plane as well as
- // the Euro sign.
- //
- // "花间一壶酒,独酌无相亲。" (simplified) and
- // "花間一壺酒,獨酌無相親。" (traditional)
- // are from the 8th century poem "Yuè Xià Dú Zhuó".
- {
- e: simplifiedchinese.GB18030,
- encoded: "\x81\x30\x81\x31\x81\x30\x89\x37\x81\x30\x89\x38\xa8\xa4\xa8\xa2" +
- "\x81\x30\x89\x39\x81\x30\x8a\x30\x84\x31\xa4\x39\x90\x30\x81\x30",
- utf8: "\u0081\u00de\u00df\u00e0\u00e1\u00e2\u00e3\uffff\U00010000",
- },
- {
- e: simplifiedchinese.GB18030,
- encoded: "\xbb\xa8\xbc\xe4\xd2\xbb\xba\xf8\xbe\xc6\xa3\xac\xb6\xc0\xd7\xc3" +
- "\xce\xde\xcf\xe0\xc7\xd7\xa1\xa3",
- utf8: "花间一壶酒,独酌无相亲。",
- },
- {
- e: simplifiedchinese.GBK,
- encoded: "A\xa1\xa1\xb0\xa1\x81\x40\x81\x80\xaa\x40\xaa\x80\xa8\x40\xa8\x80Z\x80",
- utf8: "A\u3000\u554a\u4e02\u4e90\u72dc\u7349\u02ca\u2588Z€",
- },
- {
- e: simplifiedchinese.GBK,
- encoded: "\xbb\xa8\xbc\xe4\xd2\xbb\xba\xf8\xbe\xc6\xa3\xac\xb6\xc0\xd7\xc3" +
- "\xce\xde\xcf\xe0\xc7\xd7\xa1\xa3",
- utf8: "花间一壶酒,独酌无相亲。",
- },
- {
- e: simplifiedchinese.HZGB2312,
- encoded: "A~{\x21\x21~~\x30\x21~}Z~~",
- utf8: "A\u3000~\u554aZ~",
- },
- {
- e: simplifiedchinese.HZGB2312,
- encPrefix: "~{",
- encoded: ";(<dR;:x>F#,6@WCN^O`GW!#",
- utf8: "花间一壶酒,独酌无相亲。",
- },
- {
- e: traditionalchinese.Big5,
- encoded: "A\x87\x40\x87\x41\x87\x45\xa1\x40\xfe\xfd\xfe\xfeZ\xa3\xe1",
- utf8: "A\u43f0\u4c32\U00027267\u3000\U0002910d\u79d4Z€",
- },
- {
- e: traditionalchinese.Big5,
- encoded: "\xaa\xe1\xb6\xa1\xa4\x40\xb3\xfd\xb0\x73\xa1\x41\xbf\x57\xb0\x75" +
- "\xb5\x4c\xac\xdb\xbf\xcb\xa1\x43",
- utf8: "花間一壺酒,獨酌無相親。",
- },
-
- // Japanese tests.
- //
- // "A。カ゚ 0208: etc 0212: etc" is a nonsense string that contains ASCII, half-width
- // kana, JIS X 0208 (including two near the kink in the Shift JIS second byte
- // encoding) and JIS X 0212 encodable codepoints.
- //
- // "月日は百代の過客にして、行かふ年も又旅人也。" is from the 17th century poem
- // "Oku no Hosomichi" and contains both hiragana and kanji.
- {
- e: japanese.EUCJP,
- encoded: "A\x8e\xa1\x8e\xb6\x8e\xdf " +
- "0208: \xa1\xa1\xa1\xa2\xa1\xdf\xa1\xe0\xa1\xfd\xa1\xfe\xa2\xa1\xa2\xa2\xf4\xa6 " +
- "0212: \x8f\xa2\xaf\x8f\xed\xe3",
- utf8: "A。カ゚ " +
- "0208: \u3000\u3001\u00d7\u00f7\u25ce\u25c7\u25c6\u25a1\u7199 " +
- "0212: \u02d8\u9fa5",
- },
- {
- e: japanese.EUCJP,
- encoded: "\xb7\xee\xc6\xfc\xa4\xcf\xc9\xb4\xc2\xe5\xa4\xce\xb2\xe1\xb5\xd2" +
- "\xa4\xcb\xa4\xb7\xa4\xc6\xa1\xa2\xb9\xd4\xa4\xab\xa4\xd5\xc7\xaf" +
- "\xa4\xe2\xcb\xf4\xce\xb9\xbf\xcd\xcc\xe9\xa1\xa3",
- utf8: "月日は百代の過客にして、行かふ年も又旅人也。",
- },
- {
- e: japanese.ISO2022JP,
- encoded: "\x1b(I\x21\x36\x5f\x1b(B " +
- "0208: \x1b$B\x21\x21\x21\x22\x21\x5f\x21\x60\x21\x7d\x21\x7e\x22\x21\x22\x22\x74\x26",
- utf8: "。カ゚ " +
- "0208: \u3000\u3001\u00d7\u00f7\u25ce\u25c7\u25c6\u25a1\u7199",
- },
- {
- e: japanese.ISO2022JP,
- encPrefix: "\x1b\x24\x42",
- encoded: "\x37\x6e\x46\x7c\x24\x4f\x49\x34\x42\x65\x24\x4e\x32\x61\x35\x52" +
- "\x24\x4b\x24\x37\x24\x46\x21\x22\x39\x54\x24\x2b\x24\x55\x47\x2f" +
- "\x24\x62\x4b\x74\x4e\x39\x3f\x4d\x4c\x69\x21\x23",
- utf8: "月日は百代の過客にして、行かふ年も又旅人也。",
- },
- {
- e: japanese.ShiftJIS,
- encoded: "A\xa1\xb6\xdf " +
- "0208: \x81\x40\x81\x41\x81\x7e\x81\x80\x81\x9d\x81\x9e\x81\x9f\x81\xa0\xea\xa4",
- utf8: "A。カ゚ " +
- "0208: \u3000\u3001\u00d7\u00f7\u25ce\u25c7\u25c6\u25a1\u7199",
- },
- {
- e: japanese.ShiftJIS,
- encoded: "\x8c\x8e\x93\xfa\x82\xcd\x95\x53\x91\xe3\x82\xcc\x89\xdf\x8b\x71" +
- "\x82\xc9\x82\xb5\x82\xc4\x81\x41\x8d\x73\x82\xa9\x82\xd3\x94\x4e" +
- "\x82\xe0\x96\x94\x97\xb7\x90\x6c\x96\xe7\x81\x42",
- utf8: "月日は百代の過客にして、行かふ年も又旅人也。",
- },
-
- // Korean tests.
- //
- // "A\uac02\uac35\uac56\ud401B\ud408\ud620\ud624C\u4f3d\u8a70D" is a
- // nonsense string that contains ASCII, Hangul and CJK ideographs.
- //
- // "세계야, 안녕" translates as "Hello, world".
- {
- e: korean.EUCKR,
- encoded: "A\x81\x41\x81\x61\x81\x81\xc6\xfeB\xc7\xa1\xc7\xfe\xc8\xa1C\xca\xa1\xfd\xfeD",
- utf8: "A\uac02\uac35\uac56\ud401B\ud408\ud620\ud624C\u4f3d\u8a70D",
- },
- {
- e: korean.EUCKR,
- encoded: "\xbc\xbc\xb0\xe8\xbe\xdf\x2c\x20\xbe\xc8\xb3\xe7",
- utf8: "세계야, 안녕",
- },
-}
-
-func TestBasics(t *testing.T) {
- for _, tc := range basicTestCases {
- for _, direction := range []string{"Decode", "Encode"} {
- newTransformer, want, src := (func() transform.Transformer)(nil), "", ""
- wPrefix, sPrefix := "", ""
- if direction == "Decode" {
- newTransformer, want, src = tc.e.NewDecoder, tc.utf8, tc.encoded
- wPrefix, sPrefix = "", tc.encPrefix
- } else {
- newTransformer, want, src = tc.e.NewEncoder, tc.encoded, tc.utf8
- wPrefix, sPrefix = tc.encPrefix, ""
- }
-
- dst := make([]byte, len(wPrefix)+len(want))
- nDst, nSrc, err := newTransformer().Transform(dst, []byte(sPrefix+src), true)
- if err != nil {
- t.Errorf("%v: %s: %v", tc.e, direction, err)
- continue
- }
- if nDst != len(wPrefix)+len(want) {
- t.Errorf("%v: %s: nDst got %d, want %d",
- tc.e, direction, nDst, len(wPrefix)+len(want))
- continue
- }
- if nSrc != len(sPrefix)+len(src) {
- t.Errorf("%v: %s: nSrc got %d, want %d",
- tc.e, direction, nSrc, len(sPrefix)+len(src))
- continue
- }
- if got := string(dst); got != wPrefix+want {
- t.Errorf("%v: %s:\ngot %q\nwant %q",
- tc.e, direction, got, wPrefix+want)
- continue
- }
-
- for _, n := range []int{0, 1, 2, 10, 123, 4567} {
- input := sPrefix + strings.Repeat(src, n)
- sr := strings.NewReader(input)
- g, err := ioutil.ReadAll(transform.NewReader(sr, newTransformer()))
- if err != nil {
- t.Errorf("%v: %s: ReadAll: n=%d: %v", tc.e, direction, n, err)
- continue
- }
- if len(g) == 0 && len(input) == 0 {
- // If the input is empty then the output can be empty,
- // regardless of whatever wPrefix is.
- continue
- }
- got1, want1 := string(g), wPrefix+strings.Repeat(want, n)
- if got1 != want1 {
- t.Errorf("%v: %s: ReadAll: n=%d\ngot %q\nwant %q",
- tc.e, direction, n, trim(got1), trim(want1))
- continue
- }
- }
- }
- }
-}
-
-// TestNonRepertoire tests that codes outside of an Encoding's repertoire are
-// converted:
-// - to the Unicode replacement character '\ufffd' when decoding to UTF-8,
-// - to the ASCII substitute character '\x1a' when encoding from UTF-8.
-func TestNonRepertoire(t *testing.T) {
- testCases := []struct {
- e encoding.Encoding
- dSrc, eSrc string
- }{
- {charmap.Windows1252, "\x81", "갂"},
- {japanese.EUCJP, "\xfe\xfc", "갂"},
- {japanese.ISO2022JP, "\x1b$B\x7e\x7e", "갂"},
- {japanese.ShiftJIS, "\xef\xfc", "갂"},
- {korean.EUCKR, "\xfe\xfe", "א"},
- {simplifiedchinese.GBK, "\xfe\xfe", "갂"},
- {simplifiedchinese.HZGB2312, "~{z~", "갂"},
- {traditionalchinese.Big5, "\x81\x40", "갂"},
- }
- for _, tc := range testCases {
- for _, direction := range []string{"Decode", "Encode"} {
- enc, want, src := (transform.Transformer)(nil), "", ""
- if direction == "Decode" {
- enc, want, src = tc.e.NewDecoder(), "\ufffd", tc.dSrc
- } else {
- enc, want, src = tc.e.NewEncoder(), "\x1a", tc.eSrc
- }
-
- dst, err := ioutil.ReadAll(transform.NewReader(strings.NewReader(src), enc))
- if err != nil {
- t.Errorf("%s %v: %v", direction, tc.e, err)
- continue
- }
- if got := string(dst); got != want {
- t.Errorf("%s %v:\ngot %q\nwant %q", direction, tc.e, got, want)
- continue
- }
- }
- }
-}
-
-// TestBig5CircumflexAndMacron tests the special cases listed in
-// http://encoding.spec.whatwg.org/#big5
-// Note that these special cases aren't preserved by round-tripping through
-// decoding and encoding (since
-// http://encoding.spec.whatwg.org/index-big5.txt does not have an entry for
-// U+0304 or U+030C), so we can't test this in TestBasics.
-func TestBig5CircumflexAndMacron(t *testing.T) {
- src := "\x88\x5f\x88\x60\x88\x61\x88\x62\x88\x63\x88\x64\x88\x65\x88\x66 " +
- "\x88\xa2\x88\xa3\x88\xa4\x88\xa5\x88\xa6"
- want := "ÓǑÒ\u00ca\u0304Ế\u00ca\u030cỀÊ " +
- "ü\u00ea\u0304ế\u00ea\u030cề"
- dst, err := ioutil.ReadAll(transform.NewReader(
- strings.NewReader(src), traditionalchinese.Big5.NewDecoder()))
- if err != nil {
- t.Fatal(err)
- }
- if got := string(dst); got != want {
- t.Fatalf("\ngot %q\nwant %q", got, want)
- }
-}
-
-func TestEncodeInvalidUTF8(t *testing.T) {
- inputs := []string{
- "hello.",
- "wo\ufffdld.",
- "ABC\xff\x80\x80", // Invalid UTF-8.
- "\x80\x80\x80\x80\x80",
- "\x80\x80D\x80\x80", // Valid rune at "D".
- "E\xed\xa0\x80\xed\xbf\xbfF", // Two invalid UTF-8 runes (surrogates).
- "G",
- "H\xe2\x82", // U+20AC in UTF-8 is "\xe2\x82\xac", which we split over two
- "\xacI\xe2\x82", // input lines. It maps to 0x80 in the Windows-1252 encoding.
- }
- // Each invalid source byte becomes '\x1a'.
- want := strings.Replace("hello.wo?ld.ABC??????????D??E??????FGH\x80I??", "?", "\x1a", -1)
-
- transformer := charmap.Windows1252.NewEncoder()
- gotBuf := make([]byte, 0, 1024)
- src := make([]byte, 0, 1024)
- for i, input := range inputs {
- dst := make([]byte, 1024)
- src = append(src, input...)
- atEOF := i == len(inputs)-1
- nDst, nSrc, err := transformer.Transform(dst, src, atEOF)
- gotBuf = append(gotBuf, dst[:nDst]...)
- src = src[nSrc:]
- if err != nil && err != transform.ErrShortSrc {
- t.Fatalf("i=%d: %v", i, err)
- }
- if atEOF && err != nil {
- t.Fatalf("i=%d: atEOF: %v", i, err)
- }
- }
- if got := string(gotBuf); got != want {
- t.Fatalf("\ngot %+q\nwant %+q", got, want)
- }
-}
-
-func TestReplacement(t *testing.T) {
- for _, direction := range []string{"Decode", "Encode"} {
- enc, want := (transform.Transformer)(nil), ""
- if direction == "Decode" {
- enc = encoding.Replacement.NewDecoder()
- want = "\ufffd"
- } else {
- enc = encoding.Replacement.NewEncoder()
- want = "AB\x00CD\ufffdYZ"
- }
- sr := strings.NewReader("AB\x00CD\x80YZ")
- g, err := ioutil.ReadAll(transform.NewReader(sr, enc))
- if err != nil {
- t.Errorf("%s: ReadAll: %v", direction, err)
- continue
- }
- if got := string(g); got != want {
- t.Errorf("%s:\ngot %q\nwant %q", direction, got, want)
- continue
- }
- }
-}
-
-func TestUTF8Validator(t *testing.T) {
- testCases := []struct {
- desc string
- dstSize int
- src string
- atEOF bool
- want string
- wantErr error
- }{
- {
- "empty input",
- 100,
- "",
- false,
- "",
- nil,
- },
- {
- "valid 1-byte 1-rune input",
- 100,
- "a",
- false,
- "a",
- nil,
- },
- {
- "valid 3-byte 1-rune input",
- 100,
- "\u1234",
- false,
- "\u1234",
- nil,
- },
- {
- "valid 5-byte 3-rune input",
- 100,
- "a\u0100\u0101",
- false,
- "a\u0100\u0101",
- nil,
- },
- {
- "perfectly sized dst (non-ASCII)",
- 5,
- "a\u0100\u0101",
- false,
- "a\u0100\u0101",
- nil,
- },
- {
- "short dst (non-ASCII)",
- 4,
- "a\u0100\u0101",
- false,
- "a\u0100",
- transform.ErrShortDst,
- },
- {
- "perfectly sized dst (ASCII)",
- 5,
- "abcde",
- false,
- "abcde",
- nil,
- },
- {
- "short dst (ASCII)",
- 4,
- "abcde",
- false,
- "abcd",
- transform.ErrShortDst,
- },
- {
- "partial input (!EOF)",
- 100,
- "a\u0100\xf1",
- false,
- "a\u0100",
- transform.ErrShortSrc,
- },
- {
- "invalid input (EOF)",
- 100,
- "a\u0100\xf1",
- true,
- "a\u0100",
- encoding.ErrInvalidUTF8,
- },
- {
- "invalid input (!EOF)",
- 100,
- "a\u0100\x80",
- false,
- "a\u0100",
- encoding.ErrInvalidUTF8,
- },
- {
- "invalid input (above U+10FFFF)",
- 100,
- "a\u0100\xf7\xbf\xbf\xbf",
- false,
- "a\u0100",
- encoding.ErrInvalidUTF8,
- },
- {
- "invalid input (surrogate half)",
- 100,
- "a\u0100\xed\xa0\x80",
- false,
- "a\u0100",
- encoding.ErrInvalidUTF8,
- },
- }
- for _, tc := range testCases {
- dst := make([]byte, tc.dstSize)
- nDst, nSrc, err := encoding.UTF8Validator.Transform(dst, []byte(tc.src), tc.atEOF)
- if nDst < 0 || len(dst) < nDst {
- t.Errorf("%s: nDst=%d out of range", tc.desc, nDst)
- continue
- }
- got := string(dst[:nDst])
- if got != tc.want || nSrc != len(tc.want) || err != tc.wantErr {
- t.Errorf("%s:\ngot %+q, %d, %v\nwant %+q, %d, %v",
- tc.desc, got, nSrc, err, tc.want, len(tc.want), tc.wantErr)
- continue
- }
- }
-}
-
-var (
- utf16LEIB = unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM) // UTF-16LE (atypical interpretation)
- utf16LEUB = unicode.UTF16(unicode.LittleEndian, unicode.UseBOM) // UTF-16, LE
- utf16LEEB = unicode.UTF16(unicode.LittleEndian, unicode.ExpectBOM) // UTF-16, LE, Expect
- utf16BEIB = unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM) // UTF-16BE (atypical interpretation)
- utf16BEUB = unicode.UTF16(unicode.BigEndian, unicode.UseBOM) // UTF-16 default
- utf16BEEB = unicode.UTF16(unicode.BigEndian, unicode.ExpectBOM) // UTF-16 Expect
-)
-
-func TestUTF16(t *testing.T) {
- testCases := []struct {
- desc string
- src string
- notEOF bool // the inverse of atEOF
- sizeDst int
- want string
- nSrc int
- err error
- t transform.Transformer
- }{{
- desc: "utf-16 dec: BOM determines encoding BE (RFC 2781:3.3)",
- src: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
- sizeDst: 100,
- want: "\U00012345=Ra",
- nSrc: 12,
- t: utf16BEUB.NewDecoder(),
- }, {
- desc: "utf-16 dec: BOM determines encoding LE (RFC 2781:3.3)",
- src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
- sizeDst: 100,
- want: "\U00012345=Ra",
- nSrc: 12,
- t: utf16LEUB.NewDecoder(),
- }, {
- desc: "utf-16 dec: BOM determines encoding LE, change default (RFC 2781:3.3)",
- src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
- sizeDst: 100,
- want: "\U00012345=Ra",
- nSrc: 12,
- t: utf16BEUB.NewDecoder(),
- }, {
- desc: "utf-16 dec: Fail on missing BOM when required",
- src: "\x08\xD8\x45\xDF\x3D\x00\xFF\xFE\xFE\xFF\x00\x52\x00\x61",
- sizeDst: 100,
- want: "",
- nSrc: 0,
- err: unicode.ErrMissingBOM,
- t: utf16BEEB.NewDecoder(),
- }, {
- desc: "utf-16 dec: SHOULD interpret text as big-endian when BOM not present (RFC 2781:4.3)",
- src: "\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
- sizeDst: 100,
- want: "\U00012345=Ra",
- nSrc: 10,
- t: utf16BEUB.NewDecoder(),
- }, {
- // This is an error according to RFC 2781. But errors in RFC 2781 are
- // open to interpretations, so I guess this is fine.
- desc: "utf-16le dec: incorrect BOM is an error (RFC 2781:4.1)",
- src: "\xFE\xFF\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
- sizeDst: 100,
- want: "\uFFFE\U00012345=Ra",
- nSrc: 12,
- t: utf16LEIB.NewDecoder(),
- }, {
- desc: "utf-16 enc: SHOULD write BOM (RFC 2781:3.3)",
- src: "\U00012345=Ra",
- sizeDst: 100,
- want: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
- nSrc: 7,
- t: utf16LEUB.NewEncoder(),
- }, {
- desc: "utf-16 enc: SHOULD write BOM (RFC 2781:3.3)",
- src: "\U00012345=Ra",
- sizeDst: 100,
- want: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
- nSrc: 7,
- t: utf16BEUB.NewEncoder(),
- }, {
- desc: "utf-16le enc: MUST NOT write BOM (RFC 2781:3.3)",
- src: "\U00012345=Ra",
- sizeDst: 100,
- want: "\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
- nSrc: 7,
- t: utf16LEIB.NewEncoder(),
- }, {
- desc: "utf-16be dec: incorrect UTF-16: odd bytes",
- src: "\x00",
- sizeDst: 100,
- want: "\uFFFD",
- nSrc: 1,
- t: utf16BEIB.NewDecoder(),
- }, {
- desc: "utf-16be dec: unpaired surrogate, odd bytes",
- src: "\xD8\x45\x00",
- sizeDst: 100,
- want: "\uFFFD\uFFFD",
- nSrc: 3,
- t: utf16BEIB.NewDecoder(),
- }, {
- desc: "utf-16be dec: unpaired low surrogate + valid text",
- src: "\xD8\x45\x00a",
- sizeDst: 100,
- want: "\uFFFDa",
- nSrc: 4,
- t: utf16BEIB.NewDecoder(),
- }, {
- desc: "utf-16be dec: unpaired low surrogate + valid text + single byte",
- src: "\xD8\x45\x00ab",
- sizeDst: 100,
- want: "\uFFFDa\uFFFD",
- nSrc: 5,
- t: utf16BEIB.NewDecoder(),
- }, {
- desc: "utf-16le dec: unpaired high surrogate",
- src: "\x00\x00\x00\xDC\x12\xD8",
- sizeDst: 100,
- want: "\x00\uFFFD\uFFFD",
- nSrc: 6,
- t: utf16LEIB.NewDecoder(),
- }, {
- desc: "utf-16be dec: two unpaired low surrogates",
- src: "\xD8\x45\xD8\x12",
- sizeDst: 100,
- want: "\uFFFD\uFFFD",
- nSrc: 4,
- t: utf16BEIB.NewDecoder(),
- }, {
- desc: "utf-16be dec: short dst",
- src: "\x00a",
- sizeDst: 0,
- want: "",
- nSrc: 0,
- t: utf16BEIB.NewDecoder(),
- err: transform.ErrShortDst,
- }, {
- desc: "utf-16be dec: short dst surrogate",
- src: "\xD8\xF5\xDC\x12",
- sizeDst: 3,
- want: "",
- nSrc: 0,
- t: utf16BEIB.NewDecoder(),
- err: transform.ErrShortDst,
- }, {
- desc: "utf-16be dec: short dst trailing byte",
- src: "\x00",
- sizeDst: 2,
- want: "",
- nSrc: 0,
- t: utf16BEIB.NewDecoder(),
- err: transform.ErrShortDst,
- }, {
- desc: "utf-16be dec: short src",
- src: "\x00",
- notEOF: true,
- sizeDst: 3,
- want: "",
- nSrc: 0,
- t: utf16BEIB.NewDecoder(),
- err: transform.ErrShortSrc,
- }, {
- desc: "utf-16 enc",
- src: "\U00012345=Ra",
- sizeDst: 100,
- want: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
- nSrc: 7,
- t: utf16BEUB.NewEncoder(),
- }, {
- desc: "utf-16 enc: short dst normal",
- src: "\U00012345=Ra",
- sizeDst: 9,
- want: "\xD8\x08\xDF\x45\x00\x3D\x00\x52",
- nSrc: 6,
- t: utf16BEIB.NewEncoder(),
- err: transform.ErrShortDst,
- }, {
- desc: "utf-16 enc: short dst surrogate",
- src: "\U00012345=Ra",
- sizeDst: 3,
- want: "",
- nSrc: 0,
- t: utf16BEIB.NewEncoder(),
- err: transform.ErrShortDst,
- }, {
- desc: "utf-16 enc: short src",
- src: "\U00012345=Ra\xC1",
- notEOF: true,
- sizeDst: 100,
- want: "\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
- nSrc: 7,
- t: utf16BEIB.NewEncoder(),
- err: transform.ErrShortSrc,
- }, {
- desc: "utf-16be dec: don't change byte order mid-stream",
- src: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\xFF\xFE\x00\x52\x00\x61",
- sizeDst: 100,
- want: "\U00012345=\ufffeRa",
- nSrc: 14,
- t: utf16BEUB.NewDecoder(),
- }, {
- desc: "utf-16le dec: don't change byte order mid-stream",
- src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\xFF\xFE\xFE\xFF\x52\x00\x61\x00",
- sizeDst: 100,
- want: "\U00012345=\ufeff\ufffeRa",
- nSrc: 16,
- t: utf16LEUB.NewDecoder(),
- }}
- for i, tc := range testCases {
- b := make([]byte, tc.sizeDst)
- nDst, nSrc, err := tc.t.Transform(b, []byte(tc.src), !tc.notEOF)
- if err != tc.err {
- t.Errorf("%d:%s: error was %v; want %v", i, tc.desc, err, tc.err)
- }
- if got := string(b[:nDst]); got != tc.want {
- t.Errorf("%d:%s: result was %q: want %q", i, tc.desc, got, tc.want)
- }
- if nSrc != tc.nSrc {
- t.Errorf("%d:%s: nSrc was %d; want %d", i, tc.desc, nSrc, tc.nSrc)
- }
- }
-}
-
-func TestBOMOverride(t *testing.T) {
- dec := unicode.BOMOverride(charmap.CodePage437.NewDecoder())
- dst := make([]byte, 100)
- for i, tc := range []struct {
- src string
- atEOF bool
- dst string
- nSrc int
- err error
- }{
- 0: {"H\x82ll\x93", true, "Héllô", 5, nil},
- 1: {"\uFEFFHéllö", true, "Héllö", 10, nil},
- 2: {"\xFE\xFF\x00H\x00e\x00l\x00l\x00o", true, "Hello", 12, nil},
- 3: {"\xFF\xFEH\x00e\x00l\x00l\x00o\x00", true, "Hello", 12, nil},
- 4: {"\uFEFF", true, "", 3, nil},
- 5: {"\xFE\xFF", true, "", 2, nil},
- 6: {"\xFF\xFE", true, "", 2, nil},
- 7: {"\xEF\xBB", true, "\u2229\u2557", 2, nil},
- 8: {"\xEF", true, "\u2229", 1, nil},
- 9: {"", true, "", 0, nil},
- 10: {"\xFE", true, "\u220e", 1, nil},
- 11: {"\xFF", true, "\u00a0", 1, nil},
- 12: {"\xEF\xBB", false, "", 0, transform.ErrShortSrc},
- 13: {"\xEF", false, "", 0, transform.ErrShortSrc},
- 14: {"", false, "", 0, transform.ErrShortSrc},
- 15: {"\xFE", false, "", 0, transform.ErrShortSrc},
- 16: {"\xFF", false, "", 0, transform.ErrShortSrc},
- 17: {"\xFF\xFE", false, "", 0, transform.ErrShortSrc},
- } {
- dec.Reset()
- nDst, nSrc, err := dec.Transform(dst, []byte(tc.src), tc.atEOF)
- got := string(dst[:nDst])
- if nSrc != tc.nSrc {
- t.Errorf("%d: nSrc: got %d; want %d", i, nSrc, tc.nSrc)
- }
- if got != tc.dst {
- t.Errorf("%d: got %+q; want %+q", i, got, tc.dst)
- }
- if err != tc.err {
- t.Errorf("%d: error: got %v; want %v", i, err, tc.err)
- }
- }
-}
-
-// testdataFiles are files in testdata/*.txt.
-var testdataFiles = []struct {
- enc encoding.Encoding
- basename, ext string
-}{
- {charmap.Windows1252, "candide", "windows-1252"},
- {japanese.EUCJP, "rashomon", "euc-jp"},
- {japanese.ISO2022JP, "rashomon", "iso-2022-jp"},
- {japanese.ShiftJIS, "rashomon", "shift-jis"},
- {korean.EUCKR, "unsu-joh-eun-nal", "euc-kr"},
- {simplifiedchinese.GBK, "sunzi-bingfa-simplified", "gbk"},
- {simplifiedchinese.HZGB2312, "sunzi-bingfa-gb-levels-1-and-2", "hz-gb2312"},
- {traditionalchinese.Big5, "sunzi-bingfa-traditional", "big5"},
- {utf16LEIB, "candide", "utf-16le"},
-
- // GB18030 is a superset of GBK and is nominally a Simplified Chinese
- // encoding, but it can also represent the entire Basic Multilingual
- // Plane, including codepoints like 'â' that aren't encodable by GBK.
- // GB18030 on Simplified Chinese should perform similarly to GBK on
- // Simplified Chinese. GB18030 on "candide" is more interesting.
- {simplifiedchinese.GB18030, "candide", "gb18030"},
-}
-
-func load(direction string, enc encoding.Encoding) ([]byte, []byte, func() transform.Transformer, error) {
- basename, ext, count := "", "", 0
- for _, tf := range testdataFiles {
- if tf.enc == enc {
- basename, ext = tf.basename, tf.ext
- count++
- }
- }
- if count != 1 {
- if count == 0 {
- return nil, nil, nil, fmt.Errorf("no testdataFiles for %s", enc)
- }
- return nil, nil, nil, fmt.Errorf("too many testdataFiles for %s", enc)
- }
- dstFile := fmt.Sprintf("testdata/%s-%s.txt", basename, ext)
- srcFile := fmt.Sprintf("testdata/%s-utf-8.txt", basename)
- newTransformer := enc.NewEncoder
- if direction == "Decode" {
- dstFile, srcFile = srcFile, dstFile
- newTransformer = enc.NewDecoder
- }
- dst, err := ioutil.ReadFile(dstFile)
- if err != nil {
- return nil, nil, nil, err
- }
- src, err := ioutil.ReadFile(srcFile)
- if err != nil {
- return nil, nil, nil, err
- }
- return dst, src, newTransformer, nil
-}
-
-func TestFiles(t *testing.T) {
- for _, dir := range []string{"Decode", "Encode"} {
- for _, tf := range testdataFiles {
- dst, src, newTransformer, err := load(dir, tf.enc)
- if err != nil {
- t.Errorf("%s, %s: load: %v", dir, tf.enc, err)
- continue
- }
- buf := bytes.NewBuffer(nil)
- r := transform.NewReader(bytes.NewReader(src), newTransformer())
- if _, err := io.Copy(buf, r); err != nil {
- t.Errorf("%s, %s: copy: %v", dir, tf.enc, err)
- continue
- }
- if !bytes.Equal(buf.Bytes(), dst) {
- t.Errorf("%s, %s: transformed bytes did not match golden file", dir, tf.enc)
- continue
- }
- }
- }
-}
-
-func benchmark(b *testing.B, direction string, enc encoding.Encoding) {
- _, src, newTransformer, err := load(direction, enc)
- if err != nil {
- b.Fatal(err)
- }
- b.SetBytes(int64(len(src)))
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- r := transform.NewReader(bytes.NewReader(src), newTransformer())
- io.Copy(ioutil.Discard, r)
- }
-}
-
-func BenchmarkBig5Decoder(b *testing.B) { benchmark(b, "Decode", traditionalchinese.Big5) }
-func BenchmarkBig5Encoder(b *testing.B) { benchmark(b, "Encode", traditionalchinese.Big5) }
-func BenchmarkCharmapDecoder(b *testing.B) { benchmark(b, "Decode", charmap.Windows1252) }
-func BenchmarkCharmapEncoder(b *testing.B) { benchmark(b, "Encode", charmap.Windows1252) }
-func BenchmarkEUCJPDecoder(b *testing.B) { benchmark(b, "Decode", japanese.EUCJP) }
-func BenchmarkEUCJPEncoder(b *testing.B) { benchmark(b, "Encode", japanese.EUCJP) }
-func BenchmarkEUCKRDecoder(b *testing.B) { benchmark(b, "Decode", korean.EUCKR) }
-func BenchmarkEUCKREncoder(b *testing.B) { benchmark(b, "Encode", korean.EUCKR) }
-func BenchmarkGB18030Decoder(b *testing.B) { benchmark(b, "Decode", simplifiedchinese.GB18030) }
-func BenchmarkGB18030Encoder(b *testing.B) { benchmark(b, "Encode", simplifiedchinese.GB18030) }
-func BenchmarkGBKDecoder(b *testing.B) { benchmark(b, "Decode", simplifiedchinese.GBK) }
-func BenchmarkGBKEncoder(b *testing.B) { benchmark(b, "Encode", simplifiedchinese.GBK) }
-func BenchmarkHZGB2312Decoder(b *testing.B) { benchmark(b, "Decode", simplifiedchinese.HZGB2312) }
-func BenchmarkHZGB2312Encoder(b *testing.B) { benchmark(b, "Encode", simplifiedchinese.HZGB2312) }
-func BenchmarkISO2022JPDecoder(b *testing.B) { benchmark(b, "Decode", japanese.ISO2022JP) }
-func BenchmarkISO2022JPEncoder(b *testing.B) { benchmark(b, "Encode", japanese.ISO2022JP) }
-func BenchmarkShiftJISDecoder(b *testing.B) { benchmark(b, "Decode", japanese.ShiftJIS) }
-func BenchmarkShiftJISEncoder(b *testing.B) { benchmark(b, "Encode", japanese.ShiftJIS) }
-func BenchmarkUTF16Decoder(b *testing.B) { benchmark(b, "Decode", utf16LEIB) }
-func BenchmarkUTF16Encoder(b *testing.B) { benchmark(b, "Encode", utf16LEIB) }