/usr/share/gocode/src/golang.org/x/text/encoding/unicode/utf32/utf32_test.go is in golang-golang-x-text-dev 0.0~git20170627.0.6353ef0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 | // Copyright 2016 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 utf32
import (
"testing"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/internal/enctest"
"golang.org/x/text/transform"
)
var (
utf32LEIB = UTF32(LittleEndian, IgnoreBOM) // UTF-32LE (atypical interpretation)
utf32LEUB = UTF32(LittleEndian, UseBOM) // UTF-32, LE
// utf32LEEB = UTF32(LittleEndian, ExpectBOM) // UTF-32, LE, Expect - covered in encoding_test.go
utf32BEIB = UTF32(BigEndian, IgnoreBOM) // UTF-32BE (atypical interpretation)
utf32BEUB = UTF32(BigEndian, UseBOM) // UTF-32 default
utf32BEEB = UTF32(BigEndian, ExpectBOM) // UTF-32 Expect
)
func TestBasics(t *testing.T) {
testCases := []struct {
e encoding.Encoding
encPrefix string
encSuffix string
encoded string
utf8 string
}{{
e: utf32BEIB,
encoded: "\x00\x00\x00\x57\x00\x00\x00\xe4\x00\x01\xd5\x65",
utf8: "\x57\u00e4\U0001d565",
}, {
e: UTF32(BigEndian, ExpectBOM),
encPrefix: "\x00\x00\xfe\xff",
encoded: "\x00\x00\x00\x57\x00\x00\x00\xe4\x00\x01\xd5\x65",
utf8: "\x57\u00e4\U0001d565",
}, {
e: UTF32(LittleEndian, IgnoreBOM),
encoded: "\x57\x00\x00\x00\xe4\x00\x00\x00\x65\xd5\x01\x00",
utf8: "\x57\u00e4\U0001d565",
}, {
e: UTF32(LittleEndian, ExpectBOM),
encPrefix: "\xff\xfe\x00\x00",
encoded: "\x57\x00\x00\x00\xe4\x00\x00\x00\x65\xd5\x01\x00",
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, utf32BEIB) }
func BenchmarkEncoding(b *testing.B) { enctest.Benchmark(b, utf32BEIB) }
func TestUTF32(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-32 IgnoreBOM dec: empty string",
t: utf32BEIB.NewDecoder(),
}, {
desc: "utf-32 UseBOM dec: empty string",
t: utf32BEUB.NewDecoder(),
}, {
desc: "utf-32 ExpectBOM dec: empty string",
err: ErrMissingBOM,
t: utf32BEEB.NewDecoder(),
}, {
desc: "utf-32be dec: Doesn't interpret U+FEFF as BOM",
src: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "\uFEFF\U00012345=Ra",
nSrc: 20,
t: utf32BEIB.NewDecoder(),
}, {
desc: "utf-32be dec: Interprets little endian U+FEFF as invalid",
src: "\xFF\xFE\x00\x00\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "\uFFFD\U00012345=Ra",
nSrc: 20,
t: utf32BEIB.NewDecoder(),
}, {
desc: "utf-32le dec: Doesn't interpret U+FEFF as BOM",
src: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
sizeDst: 100,
want: "\uFEFF\U00012345=Ra",
nSrc: 20,
t: utf32LEIB.NewDecoder(),
}, {
desc: "utf-32le dec: Interprets big endian U+FEFF as invalid",
src: "\x00\x00\xFE\xFF\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
sizeDst: 100,
want: "\uFFFD\U00012345=Ra",
nSrc: 20,
t: utf32LEIB.NewDecoder(),
}, {
desc: "utf-32 enc: Writes big-endian BOM",
src: "\U00012345=Ra",
sizeDst: 100,
want: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
nSrc: 7,
t: utf32BEUB.NewEncoder(),
}, {
desc: "utf-32 enc: Writes little-endian BOM",
src: "\U00012345=Ra",
sizeDst: 100,
want: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
nSrc: 7,
t: utf32LEUB.NewEncoder(),
}, {
desc: "utf-32 dec: Interprets text using big-endian default when BOM not present",
src: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "\U00012345=Ra",
nSrc: 16,
t: utf32BEUB.NewDecoder(),
}, {
desc: "utf-32 dec: Interprets text using little-endian default when BOM not present",
src: "\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
sizeDst: 100,
want: "\U00012345=Ra",
nSrc: 16,
t: utf32LEUB.NewDecoder(),
}, {
desc: "utf-32 dec: BOM determines encoding BE",
src: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "\U00012345=Ra",
nSrc: 20,
t: utf32BEUB.NewDecoder(),
}, {
desc: "utf-32 dec: BOM determines encoding LE",
src: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
sizeDst: 100,
want: "\U00012345=Ra",
nSrc: 20,
t: utf32LEUB.NewDecoder(),
}, {
desc: "utf-32 dec: BOM determines encoding LE, change default",
src: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
sizeDst: 100,
want: "\U00012345=Ra",
nSrc: 20,
t: utf32BEUB.NewDecoder(),
}, {
desc: "utf-32 dec: BOM determines encoding BE, change default",
src: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "\U00012345=Ra",
nSrc: 20,
t: utf32LEUB.NewDecoder(),
}, {
desc: "utf-32 dec: Don't change big-endian byte order mid-stream",
src: "\x00\x01\x23\x45\x00\x00\x00\x3D\xFF\xFE\x00\x00\x00\x00\xFE\xFF\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "\U00012345=\uFFFD\uFEFFRa",
nSrc: 24,
t: utf32BEUB.NewDecoder(),
}, {
desc: "utf-32 dec: Don't change little-endian byte order mid-stream",
src: "\x45\x23\x01\x00\x3D\x00\x00\x00\x00\x00\xFE\xFF\xFF\xFE\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00",
sizeDst: 100,
want: "\U00012345=\uFFFD\uFEFFRa",
nSrc: 24,
t: utf32LEUB.NewDecoder(),
}, {
desc: "utf-32 dec: Fail on missing BOM when required",
src: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
sizeDst: 100,
want: "",
nSrc: 0,
err: ErrMissingBOM,
t: utf32BEEB.NewDecoder(),
}, {
desc: "utf-32 enc: Short dst",
src: "\U00012345=Ra",
sizeDst: 15,
want: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52",
nSrc: 6,
err: transform.ErrShortDst,
t: utf32BEIB.NewEncoder(),
}, {
desc: "utf-32 enc: Short src",
src: "\U00012345=Ra\xC2",
notEOF: true,
sizeDst: 100,
want: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61",
nSrc: 7,
err: transform.ErrShortSrc,
t: utf32BEIB.NewEncoder(),
}, {
desc: "utf-32 enc: Invalid input",
src: "\x80\xC1\xC2\x7F\xC2",
sizeDst: 100,
want: "\x00\x00\xFF\xFD\x00\x00\xFF\xFD\x00\x00\xFF\xFD\x00\x00\x00\x7F\x00\x00\xFF\xFD",
nSrc: 5,
t: utf32BEIB.NewEncoder(),
}, {
desc: "utf-32 dec: Short dst",
src: "\x00\x00\x00\x41",
sizeDst: 0,
want: "",
nSrc: 0,
err: transform.ErrShortDst,
t: utf32BEIB.NewDecoder(),
}, {
desc: "utf-32 dec: Short src",
src: "\x00\x00\x00",
notEOF: true,
sizeDst: 4,
want: "",
nSrc: 0,
err: transform.ErrShortSrc,
t: utf32BEIB.NewDecoder(),
}, {
desc: "utf-32 dec: Invalid input",
src: "\x00\x00\xD8\x00\x00\x00\xDF\xFF\x00\x11\x00\x00\x00\x00\x00",
sizeDst: 100,
want: "\uFFFD\uFFFD\uFFFD\uFFFD",
nSrc: 15,
t: utf32BEIB.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)
}
}
}
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