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Diffstat (limited to 'vendor/golang.org/x/text/encoding/unicode/unicode_test.go')
-rw-r--r--vendor/golang.org/x/text/encoding/unicode/unicode_test.go499
1 files changed, 499 insertions, 0 deletions
diff --git a/vendor/golang.org/x/text/encoding/unicode/unicode_test.go b/vendor/golang.org/x/text/encoding/unicode/unicode_test.go
new file mode 100644
index 0000000..51b4712
--- /dev/null
+++ b/vendor/golang.org/x/text/encoding/unicode/unicode_test.go
@@ -0,0 +1,499 @@
+// 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 unicode
+
+import (
+ "testing"
+
+ "golang.org/x/text/encoding"
+ "golang.org/x/text/encoding/charmap"
+ "golang.org/x/text/encoding/internal/enctest"
+ "golang.org/x/text/transform"
+)
+
+func TestBasics(t *testing.T) {
+ testCases := []struct {
+ e encoding.Encoding
+ encPrefix string
+ encSuffix string
+ encoded string
+ utf8 string
+ }{{
+ e: utf16BEIB,
+ 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: utf16LEIB,
+ 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",
+ }}
+
+ 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, UTF8)
+ enctest.TestFile(t, utf16LEIB)
+}
+
+func BenchmarkEncoding(b *testing.B) {
+ enctest.Benchmark(b, UTF8)
+ enctest.Benchmark(b, utf16LEIB)
+}
+
+var (
+ utf16LEIB = UTF16(LittleEndian, IgnoreBOM) // UTF-16LE (atypical interpretation)
+ utf16LEUB = UTF16(LittleEndian, UseBOM) // UTF-16, LE
+ utf16LEEB = UTF16(LittleEndian, ExpectBOM) // UTF-16, LE, Expect
+ utf16BEIB = UTF16(BigEndian, IgnoreBOM) // UTF-16BE (atypical interpretation)
+ utf16BEUB = UTF16(BigEndian, UseBOM) // UTF-16 default
+ utf16BEEB = UTF16(BigEndian, 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 IgnoreBOM dec: empty string",
+ t: utf16BEIB.NewDecoder(),
+ }, {
+ desc: "utf-16 UseBOM dec: empty string",
+ t: utf16BEUB.NewDecoder(),
+ }, {
+ desc: "utf-16 ExpectBOM dec: empty string",
+ err: ErrMissingBOM,
+ t: utf16BEEB.NewDecoder(),
+ }, {
+ 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: 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\xC2",
+ 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 TestUTF8Decoder(t *testing.T) {
+ testCases := []struct {
+ desc string
+ src string
+ notEOF bool // the inverse of atEOF
+ sizeDst int
+ want string
+ nSrc int
+ err error
+ }{{
+ desc: "empty string, empty dest buffer",
+ }, {
+ desc: "empty string",
+ sizeDst: 8,
+ }, {
+ desc: "empty string, streaming",
+ notEOF: true,
+ sizeDst: 8,
+ }, {
+ desc: "ascii",
+ src: "abcde",
+ sizeDst: 8,
+ want: "abcde",
+ nSrc: 5,
+ }, {
+ desc: "ascii and error",
+ src: "ab\x80de",
+ sizeDst: 7,
+ want: "ab\ufffdde",
+ nSrc: 5,
+ }, {
+ desc: "valid two-byte sequence",
+ src: "a\u0300bc",
+ sizeDst: 7,
+ want: "a\u0300bc",
+ nSrc: 5,
+ }, {
+ desc: "valid three-byte sequence",
+ src: "a\u0300中",
+ sizeDst: 7,
+ want: "a\u0300中",
+ nSrc: 6,
+ }, {
+ desc: "valid four-byte sequence",
+ src: "a中\U00016F50",
+ sizeDst: 8,
+ want: "a中\U00016F50",
+ nSrc: 8,
+ }, {
+ desc: "short source buffer",
+ src: "abc\xf0\x90",
+ notEOF: true,
+ sizeDst: 10,
+ want: "abc",
+ nSrc: 3,
+ err: transform.ErrShortSrc,
+ }, {
+ // We don't check for the maximal subpart of an ill-formed subsequence
+ // at the end of an open segment.
+ desc: "complete invalid that looks like short at end",
+ src: "abc\xf0\x80",
+ notEOF: true,
+ sizeDst: 10,
+ want: "abc", // instead of "abc\ufffd\ufffd",
+ nSrc: 3,
+ err: transform.ErrShortSrc,
+ }, {
+ desc: "incomplete sequence at end",
+ src: "a\x80bc\xf0\x90",
+ sizeDst: 9,
+ want: "a\ufffdbc\ufffd",
+ nSrc: 6,
+ }, {
+ desc: "invalid second byte",
+ src: "abc\xf0dddd",
+ sizeDst: 10,
+ want: "abc\ufffddddd",
+ nSrc: 8,
+ }, {
+ desc: "invalid second byte at end",
+ src: "abc\xf0d",
+ sizeDst: 10,
+ want: "abc\ufffdd",
+ nSrc: 5,
+ }, {
+ desc: "invalid third byte",
+ src: "a\u0300bc\xf0\x90dddd",
+ sizeDst: 12,
+ want: "a\u0300bc\ufffddddd",
+ nSrc: 11,
+ }, {
+ desc: "invalid third byte at end",
+ src: "a\u0300bc\xf0\x90d",
+ sizeDst: 12,
+ want: "a\u0300bc\ufffdd",
+ nSrc: 8,
+ }, {
+ desc: "invalid fourth byte, tight buffer",
+ src: "a\u0300bc\xf0\x90\x80d",
+ sizeDst: 9,
+ want: "a\u0300bc\ufffdd",
+ nSrc: 9,
+ }, {
+ desc: "invalid fourth byte at end",
+ src: "a\u0300bc\xf0\x90\x80",
+ sizeDst: 8,
+ want: "a\u0300bc\ufffd",
+ nSrc: 8,
+ }, {
+ desc: "invalid fourth byte and short four byte sequence",
+ src: "a\u0300bc\xf0\x90\x80\xf0\x90\x80",
+ notEOF: true,
+ sizeDst: 20,
+ want: "a\u0300bc\ufffd",
+ nSrc: 8,
+ err: transform.ErrShortSrc,
+ }, {
+ desc: "valid four-byte sequence overflowing short buffer",
+ src: "a\u0300bc\xf0\x90\x80\x80",
+ notEOF: true,
+ sizeDst: 8,
+ want: "a\u0300bc",
+ nSrc: 5,
+ err: transform.ErrShortDst,
+ }, {
+ desc: "invalid fourth byte at end short, but short dst",
+ src: "a\u0300bc\xf0\x90\x80\xf0\x90\x80",
+ notEOF: true,
+ sizeDst: 8,
+ // More bytes would fit in the buffer, but this seems to require a more
+ // complicated and slower algorithm.
+ want: "a\u0300bc", // instead of "a\u0300bc"
+ nSrc: 5,
+ err: transform.ErrShortDst,
+ }, {
+ desc: "short dst for error",
+ src: "abc\x80",
+ notEOF: true,
+ sizeDst: 5,
+ want: "abc",
+ nSrc: 3,
+ err: transform.ErrShortDst,
+ }, {
+ desc: "adjusting short dst buffer",
+ src: "abc\x80ef",
+ notEOF: true,
+ sizeDst: 6,
+ want: "abc\ufffd",
+ nSrc: 4,
+ err: transform.ErrShortDst,
+ }}
+ tr := UTF8.NewDecoder()
+ for i, tc := range testCases {
+ b := make([]byte, tc.sizeDst)
+ nDst, nSrc, err := tr.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 := 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, "\u25a0", 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)
+ }
+ }
+}