summaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go')
-rw-r--r--vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go248
1 files changed, 248 insertions, 0 deletions
diff --git a/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go b/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go
new file mode 100644
index 0000000..cd6158e
--- /dev/null
+++ b/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go
@@ -0,0 +1,248 @@
+// 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)
+ }
+ }
+}