| // 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 japanese |
| |
| import ( |
| "fmt" |
| "strings" |
| "testing" |
| "unicode/utf8" |
| |
| "golang.org/x/text/encoding" |
| "golang.org/x/text/encoding/internal" |
| "golang.org/x/text/encoding/internal/enctest" |
| "golang.org/x/text/transform" |
| ) |
| |
| func dec(e encoding.Encoding) (dir string, t transform.Transformer, err error) { |
| return "Decode", e.NewDecoder(), nil |
| } |
| func enc(e encoding.Encoding) (dir string, t transform.Transformer, err error) { |
| return "Encode", e.NewEncoder(), internal.ErrASCIIReplacement |
| } |
| |
| func TestNonRepertoire(t *testing.T) { |
| // Pick n to cause the destination buffer in transform.String to overflow. |
| const n = 100 |
| long := strings.Repeat(".", n) |
| testCases := []struct { |
| init func(e encoding.Encoding) (string, transform.Transformer, error) |
| e encoding.Encoding |
| src, want string |
| }{ |
| {enc, EUCJP, "갂", ""}, |
| {enc, EUCJP, "a갂", "a"}, |
| {enc, EUCJP, "丌갂", "\x8f\xb0\xa4"}, |
| |
| {enc, ISO2022JP, "갂", ""}, |
| {enc, ISO2022JP, "a갂", "a"}, |
| {enc, ISO2022JP, "朗갂", "\x1b$BzF\x1b(B"}, // switch back to ASCII mode at end |
| |
| {enc, ShiftJIS, "갂", ""}, |
| {enc, ShiftJIS, "a갂", "a"}, |
| {enc, ShiftJIS, "\u2190갂", "\x81\xa9"}, |
| |
| // Continue correctly after errors |
| {dec, EUCJP, "\x8e\xa0", "\ufffd\ufffd"}, |
| {dec, EUCJP, "\x8e\xe0", "\ufffd"}, |
| {dec, EUCJP, "\x8e\xff", "\ufffd\ufffd"}, |
| {dec, EUCJP, "\x8ea", "\ufffda"}, |
| {dec, EUCJP, "\x8f\xa0", "\ufffd\ufffd"}, |
| {dec, EUCJP, "\x8f\xa1\xa0", "\ufffd\ufffd"}, |
| {dec, EUCJP, "\x8f\xa1a", "\ufffda"}, |
| {dec, EUCJP, "\x8f\xa1a", "\ufffda"}, |
| {dec, EUCJP, "\x8f\xa1a", "\ufffda"}, |
| {dec, EUCJP, "\x8f\xa2\xa2", "\ufffd"}, |
| {dec, EUCJP, "\xfe", "\ufffd"}, |
| {dec, EUCJP, "\xfe\xfc", "\ufffd"}, |
| {dec, EUCJP, "\xfe\xff", "\ufffd\ufffd"}, |
| // Correct handling of end of source |
| {dec, EUCJP, strings.Repeat("\x8e", n), strings.Repeat("\ufffd", n)}, |
| {dec, EUCJP, strings.Repeat("\x8f", n), strings.Repeat("\ufffd", n)}, |
| {dec, EUCJP, strings.Repeat("\x8f\xa0", n), strings.Repeat("\ufffd", 2*n)}, |
| {dec, EUCJP, "a" + strings.Repeat("\x8f\xa1", n), "a" + strings.Repeat("\ufffd", n)}, |
| {dec, EUCJP, "a" + strings.Repeat("\x8f\xa1\xff", n), "a" + strings.Repeat("\ufffd", 2*n)}, |
| |
| // Continue correctly after errors |
| {dec, ShiftJIS, "\x80", "\u0080"}, // It's what the spec says. |
| {dec, ShiftJIS, "\x81", "\ufffd"}, |
| {dec, ShiftJIS, "\x81\x7f", "\ufffd\u007f"}, |
| {dec, ShiftJIS, "\xe0", "\ufffd"}, |
| {dec, ShiftJIS, "\xe0\x39", "\ufffd\u0039"}, |
| {dec, ShiftJIS, "\xe0\x9f", "燹"}, |
| {dec, ShiftJIS, "\xe0\xfd", "\ufffd"}, |
| {dec, ShiftJIS, "\xef\xfc", "\ufffd"}, |
| {dec, ShiftJIS, "\xfc\xfc", "\ufffd"}, |
| {dec, ShiftJIS, "\xfc\xfd", "\ufffd"}, |
| {dec, ShiftJIS, "\xfdaa", "\ufffdaa"}, |
| |
| {dec, ShiftJIS, strings.Repeat("\x81\x81", n), strings.Repeat("=", n)}, |
| {dec, ShiftJIS, strings.Repeat("\xe0\xfd", n), strings.Repeat("\ufffd", n)}, |
| {dec, ShiftJIS, "a" + strings.Repeat("\xe0\xfd", n), "a" + strings.Repeat("\ufffd", n)}, |
| |
| {dec, ISO2022JP, "\x1b$", "\ufffd$"}, |
| {dec, ISO2022JP, "\x1b(", "\ufffd("}, |
| {dec, ISO2022JP, "\x1b@", "\ufffd@"}, |
| {dec, ISO2022JP, "\x1bZ", "\ufffdZ"}, |
| // incomplete escapes |
| {dec, ISO2022JP, "\x1b$", "\ufffd$"}, |
| {dec, ISO2022JP, "\x1b$J.", "\ufffd$J."}, // illegal |
| {dec, ISO2022JP, "\x1b$B.", "\ufffd"}, // JIS208 |
| {dec, ISO2022JP, "\x1b$(", "\ufffd$("}, // JIS212 |
| {dec, ISO2022JP, "\x1b$(..", "\ufffd$(.."}, // JIS212 |
| {dec, ISO2022JP, "\x1b$(" + long, "\ufffd$(" + long}, // JIS212 |
| {dec, ISO2022JP, "\x1b$(D.", "\ufffd"}, // JIS212 |
| {dec, ISO2022JP, "\x1b$(D..", "\ufffd"}, // JIS212 |
| {dec, ISO2022JP, "\x1b$(D...", "\ufffd\ufffd"}, // JIS212 |
| {dec, ISO2022JP, "\x1b(B.", "."}, // ascii |
| {dec, ISO2022JP, "\x1b(B..", ".."}, // ascii |
| {dec, ISO2022JP, "\x1b(J.", "."}, // roman |
| {dec, ISO2022JP, "\x1b(J..", ".."}, // roman |
| {dec, ISO2022JP, "\x1b(I\x20", "\ufffd"}, // katakana |
| {dec, ISO2022JP, "\x1b(I\x20\x20", "\ufffd\ufffd"}, // katakana |
| // recover to same state |
| {dec, ISO2022JP, "\x1b(B\x1b.", "\ufffd."}, |
| {dec, ISO2022JP, "\x1b(I\x1b.", "\ufffdョ"}, |
| {dec, ISO2022JP, "\x1b(I\x1b$.", "\ufffd、ョ"}, |
| {dec, ISO2022JP, "\x1b(I\x1b(.", "\ufffdィョ"}, |
| {dec, ISO2022JP, "\x1b$B\x7e\x7e", "\ufffd"}, |
| {dec, ISO2022JP, "\x1b$@\x0a.", "\x0a."}, |
| {dec, ISO2022JP, "\x1b$B\x0a.", "\x0a."}, |
| {dec, ISO2022JP, "\x1b$(D\x0a.", "\x0a."}, |
| {dec, ISO2022JP, "\x1b$(D\x7e\x7e", "\ufffd"}, |
| {dec, ISO2022JP, "\x80", "\ufffd"}, |
| |
| // TODO: according to https://encoding.spec.whatwg.org/#iso-2022-jp, |
| // these should all be correct. |
| // {dec, ISO2022JP, "\x1b(B\x0E", "\ufffd"}, |
| // {dec, ISO2022JP, "\x1b(B\x0F", "\ufffd"}, |
| {dec, ISO2022JP, "\x1b(B\x5C", "\u005C"}, |
| {dec, ISO2022JP, "\x1b(B\x7E", "\u007E"}, |
| // {dec, ISO2022JP, "\x1b(J\x0E", "\ufffd"}, |
| // {dec, ISO2022JP, "\x1b(J\x0F", "\ufffd"}, |
| // {dec, ISO2022JP, "\x1b(J\x5C", "\u00A5"}, |
| // {dec, ISO2022JP, "\x1b(J\x7E", "\u203E"}, |
| } |
| for _, tc := range testCases { |
| dir, tr, wantErr := tc.init(tc.e) |
| t.Run(fmt.Sprintf("%s/%v/%q", dir, tc.e, short(tc.src)), func(t *testing.T) { |
| dst := make([]byte, 100000) |
| src := []byte(tc.src) |
| for i := 0; i <= len(tc.src); i++ { |
| nDst, nSrc, err := tr.Transform(dst, src[:i], false) |
| if err != nil && err != transform.ErrShortSrc && err != wantErr { |
| t.Fatalf("error on first call to Transform: %v", err) |
| } |
| n, _, err := tr.Transform(dst[nDst:], src[nSrc:], true) |
| nDst += n |
| if err != wantErr { |
| t.Fatalf("(%q|%q): got %v; want %v", tc.src[:i], tc.src[i:], err, wantErr) |
| } |
| if got := string(dst[:nDst]); got != tc.want { |
| t.Errorf("(%q|%q):\ngot %q\nwant %q", tc.src[:i], tc.src[i:], got, tc.want) |
| } |
| } |
| }) |
| } |
| } |
| |
| func short(s string) string { |
| if len(s) <= 50 { |
| return s |
| } |
| var i int |
| for i = 1; i < utf8.UTFMax && !utf8.RuneStart(s[50-i]); i++ { |
| } |
| return s[:50-i] + "…" |
| } |
| |
| func TestCorrect(t *testing.T) { |
| testCases := []struct { |
| init func(e encoding.Encoding) (string, transform.Transformer, error) |
| e encoding.Encoding |
| src, want string |
| }{ |
| {dec, ShiftJIS, "\x9f\xfc", "滌"}, |
| {dec, ShiftJIS, "\xfb\xfc", "髙"}, |
| {dec, ShiftJIS, "\xfa\xb1", "﨑"}, |
| {enc, ShiftJIS, "滌", "\x9f\xfc"}, |
| {enc, ShiftJIS, "﨑", "\xed\x95"}, |
| } |
| for _, tc := range testCases { |
| dir, tr, _ := tc.init(tc.e) |
| |
| dst, _, err := transform.String(tr, tc.src) |
| if err != nil { |
| t.Errorf("%s %v(%q): got %v; want %v", dir, tc.e, tc.src, err, nil) |
| } |
| if got := string(dst); got != tc.want { |
| t.Errorf("%s %v(%q):\ngot %q\nwant %q", dir, tc.e, tc.src, got, tc.want) |
| } |
| } |
| } |
| |
| func TestBasics(t *testing.T) { |
| // The encoded forms can be verified by the iconv program: |
| // $ echo 月日は百代 | iconv -f UTF-8 -t SHIFT-JIS | xxd |
| testCases := []struct { |
| e encoding.Encoding |
| encPrefix string |
| encSuffix string |
| encoded string |
| utf8 string |
| }{{ |
| // "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: 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: 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: ISO2022JP, |
| encSuffix: "\x1b\x28\x42", |
| encoded: "\x1b\x28\x49\x21\x36\x5f\x1b\x28\x42 " + |
| "0208: \x1b\x24\x42\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: ISO2022JP, |
| encPrefix: "\x1b\x24\x42", |
| encSuffix: "\x1b\x28\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: 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: 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。", |
| }} |
| |
| for _, tc := range testCases { |
| enctest.TestEncoding(t, tc.e, tc.encoded, tc.utf8, tc.encPrefix, tc.encSuffix) |
| } |
| } |
| |
| func TestFiles(t *testing.T) { |
| enctest.TestFile(t, EUCJP) |
| enctest.TestFile(t, ISO2022JP) |
| enctest.TestFile(t, ShiftJIS) |
| } |
| |
| func BenchmarkEncoding(b *testing.B) { |
| enctest.Benchmark(b, EUCJP) |
| enctest.Benchmark(b, ISO2022JP) |
| enctest.Benchmark(b, ShiftJIS) |
| } |