diff options
Diffstat (limited to 'src/encoding/hex/hex_test.go')
-rw-r--r-- | src/encoding/hex/hex_test.go | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/encoding/hex/hex_test.go b/src/encoding/hex/hex_test.go new file mode 100644 index 000000000..b969636cd --- /dev/null +++ b/src/encoding/hex/hex_test.go @@ -0,0 +1,153 @@ +// Copyright 2009 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 hex + +import ( + "bytes" + "testing" +) + +type encDecTest struct { + enc string + dec []byte +} + +var encDecTests = []encDecTest{ + {"", []byte{}}, + {"0001020304050607", []byte{0, 1, 2, 3, 4, 5, 6, 7}}, + {"08090a0b0c0d0e0f", []byte{8, 9, 10, 11, 12, 13, 14, 15}}, + {"f0f1f2f3f4f5f6f7", []byte{0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7}}, + {"f8f9fafbfcfdfeff", []byte{0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff}}, + {"67", []byte{'g'}}, + {"e3a1", []byte{0xe3, 0xa1}}, +} + +func TestEncode(t *testing.T) { + for i, test := range encDecTests { + dst := make([]byte, EncodedLen(len(test.dec))) + n := Encode(dst, test.dec) + if n != len(dst) { + t.Errorf("#%d: bad return value: got: %d want: %d", i, n, len(dst)) + } + if string(dst) != test.enc { + t.Errorf("#%d: got: %#v want: %#v", i, dst, test.enc) + } + } +} + +func TestDecode(t *testing.T) { + // Case for decoding uppercase hex characters, since + // Encode always uses lowercase. + decTests := append(encDecTests, encDecTest{"F8F9FAFBFCFDFEFF", []byte{0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff}}) + for i, test := range decTests { + dst := make([]byte, DecodedLen(len(test.enc))) + n, err := Decode(dst, []byte(test.enc)) + if err != nil { + t.Errorf("#%d: bad return value: got:%d want:%d", i, n, len(dst)) + } else if !bytes.Equal(dst, test.dec) { + t.Errorf("#%d: got: %#v want: %#v", i, dst, test.dec) + } + } +} + +func TestEncodeToString(t *testing.T) { + for i, test := range encDecTests { + s := EncodeToString(test.dec) + if s != test.enc { + t.Errorf("#%d got:%s want:%s", i, s, test.enc) + } + } +} + +func TestDecodeString(t *testing.T) { + for i, test := range encDecTests { + dst, err := DecodeString(test.enc) + if err != nil { + t.Errorf("#%d: unexpected err value: %s", i, err) + continue + } + if !bytes.Equal(dst, test.dec) { + t.Errorf("#%d: got: %#v want: #%v", i, dst, test.dec) + } + } +} + +type errTest struct { + in string + err string +} + +var errTests = []errTest{ + {"0", "encoding/hex: odd length hex string"}, + {"0g", "encoding/hex: invalid byte: U+0067 'g'"}, + {"00gg", "encoding/hex: invalid byte: U+0067 'g'"}, + {"0\x01", "encoding/hex: invalid byte: U+0001"}, +} + +func TestInvalidErr(t *testing.T) { + for i, test := range errTests { + dst := make([]byte, DecodedLen(len(test.in))) + _, err := Decode(dst, []byte(test.in)) + if err == nil { + t.Errorf("#%d: expected error; got none", i) + } else if err.Error() != test.err { + t.Errorf("#%d: got: %v want: %v", i, err, test.err) + } + } +} + +func TestInvalidStringErr(t *testing.T) { + for i, test := range errTests { + _, err := DecodeString(test.in) + if err == nil { + t.Errorf("#%d: expected error; got none", i) + } else if err.Error() != test.err { + t.Errorf("#%d: got: %v want: %v", i, err, test.err) + } + } +} + +func TestDumper(t *testing.T) { + var in [40]byte + for i := range in { + in[i] = byte(i + 30) + } + + for stride := 1; stride < len(in); stride++ { + var out bytes.Buffer + dumper := Dumper(&out) + done := 0 + for done < len(in) { + todo := done + stride + if todo > len(in) { + todo = len(in) + } + dumper.Write(in[done:todo]) + done = todo + } + + dumper.Close() + if !bytes.Equal(out.Bytes(), expectedHexDump) { + t.Errorf("stride: %d failed. got:\n%s\nwant:\n%s", stride, out.Bytes(), expectedHexDump) + } + } +} + +func TestDump(t *testing.T) { + var in [40]byte + for i := range in { + in[i] = byte(i + 30) + } + + out := []byte(Dump(in[:])) + if !bytes.Equal(out, expectedHexDump) { + t.Errorf("got:\n%s\nwant:\n%s", out, expectedHexDump) + } +} + +var expectedHexDump = []byte(`00000000 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d |.. !"#$%&'()*+,-| +00000010 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d |./0123456789:;<=| +00000020 3e 3f 40 41 42 43 44 45 |>?@ABCDE| +`) |