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-rw-r--r--Godeps/_workspace/src/golang.org/x/text/encoding/encoding_test.go1033
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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 000000000..a5a96d104
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+++ b/Godeps/_workspace/src/golang.org/x/text/encoding/encoding_test.go
@@ -0,0 +1,1033 @@
+// 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) }
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-19 22:53:53 +0800