diff options
Diffstat (limited to 'libgo/go/image/png/reader_test.go')
| -rw-r--r-- | libgo/go/image/png/reader_test.go | 71 |
1 files changed, 61 insertions, 10 deletions
diff --git a/libgo/go/image/png/reader_test.go b/libgo/go/image/png/reader_test.go index 503b5dc567b..cabf533adcd 100644 --- a/libgo/go/image/png/reader_test.go +++ b/libgo/go/image/png/reader_test.go @@ -588,6 +588,67 @@ func TestUnknownChunkLengthUnderflow(t *testing.T) { } } +func TestGray8Transparent(t *testing.T) { + // These bytes come from https://github.com/golang/go/issues/19553 + m, err := Decode(bytes.NewReader([]byte{ + 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52, + 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x0b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x85, 0x2c, 0x88, + 0x80, 0x00, 0x00, 0x00, 0x02, 0x74, 0x52, 0x4e, 0x53, 0x00, 0xff, 0x5b, 0x91, 0x22, 0xb5, 0x00, + 0x00, 0x00, 0x02, 0x62, 0x4b, 0x47, 0x44, 0x00, 0xff, 0x87, 0x8f, 0xcc, 0xbf, 0x00, 0x00, 0x00, + 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0a, 0xf0, 0x00, 0x00, 0x0a, 0xf0, 0x01, 0x42, 0xac, + 0x34, 0x98, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4d, 0x45, 0x07, 0xd5, 0x04, 0x02, 0x12, 0x11, + 0x11, 0xf7, 0x65, 0x3d, 0x8b, 0x00, 0x00, 0x00, 0x4f, 0x49, 0x44, 0x41, 0x54, 0x08, 0xd7, 0x63, + 0xf8, 0xff, 0xff, 0xff, 0xb9, 0xbd, 0x70, 0xf0, 0x8c, 0x01, 0xc8, 0xaf, 0x6e, 0x99, 0x02, 0x05, + 0xd9, 0x7b, 0xc1, 0xfc, 0x6b, 0xff, 0xa1, 0xa0, 0x87, 0x30, 0xff, 0xd9, 0xde, 0xbd, 0xd5, 0x4b, + 0xf7, 0xee, 0xfd, 0x0e, 0xe3, 0xef, 0xcd, 0x06, 0x19, 0x14, 0xf5, 0x1e, 0xce, 0xef, 0x01, 0x31, + 0x92, 0xd7, 0x82, 0x41, 0x31, 0x9c, 0x3f, 0x07, 0x02, 0xee, 0xa1, 0xaa, 0xff, 0xff, 0x9f, 0xe1, + 0xd9, 0x56, 0x30, 0xf8, 0x0e, 0xe5, 0x03, 0x00, 0xa9, 0x42, 0x84, 0x3d, 0xdf, 0x8f, 0xa6, 0x8f, + 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82, + })) + if err != nil { + t.Fatalf("Decode: %v", err) + } + + const hex = "0123456789abcdef" + var got []byte + bounds := m.Bounds() + for y := bounds.Min.Y; y < bounds.Max.Y; y++ { + for x := bounds.Min.X; x < bounds.Max.X; x++ { + if r, _, _, a := m.At(x, y).RGBA(); a != 0 { + got = append(got, + hex[0x0f&(r>>12)], + hex[0x0f&(r>>8)], + ' ', + ) + } else { + got = append(got, + '.', + '.', + ' ', + ) + } + } + got = append(got, '\n') + } + + const want = "" + + ".. .. .. ce bd bd bd bd bd bd bd bd bd bd e6 \n" + + ".. .. .. 7b 84 94 94 94 94 94 94 94 94 6b bd \n" + + ".. .. .. 7b d6 .. .. .. .. .. .. .. .. 8c bd \n" + + ".. .. .. 7b d6 .. .. .. .. .. .. .. .. 8c bd \n" + + ".. .. .. 7b d6 .. .. .. .. .. .. .. .. 8c bd \n" + + "e6 bd bd 7b a5 bd bd f7 .. .. .. .. .. 8c bd \n" + + "bd 6b 94 94 94 94 5a ef .. .. .. .. .. 8c bd \n" + + "bd 8c .. .. .. .. 63 ad ad ad ad ad ad 73 bd \n" + + "bd 8c .. .. .. .. 63 9c 9c 9c 9c 9c 9c 9c de \n" + + "bd 6b 94 94 94 94 5a ef .. .. .. .. .. .. .. \n" + + "e6 b5 b5 b5 b5 b5 b5 f7 .. .. .. .. .. .. .. \n" + + if string(got) != want { + t.Errorf("got:\n%swant:\n%s", got, want) + } +} + func benchmarkDecode(b *testing.B, filename string, bytesPerPixel int) { b.StopTimer() data, err := ioutil.ReadFile(filename) @@ -629,13 +690,3 @@ func BenchmarkDecodeRGB(b *testing.B) { func BenchmarkDecodeInterlacing(b *testing.B) { benchmarkDecode(b, "testdata/benchRGB-interlace.png", 4) } - -func TestIssue19553(t *testing.T) { - var buf = []byte{ - 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x0b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x85, 0x2c, 0x88, 0x80, 0x00, 0x00, 0x00, 0x02, 0x74, 0x52, 0x4e, 0x53, 0x00, 0xff, 0x5b, 0x91, 0x22, 0xb5, 0x00, 0x00, 0x00, 0x02, 0x62, 0x4b, 0x47, 0x44, 0x00, 0xff, 0x87, 0x8f, 0xcc, 0xbf, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0a, 0xf0, 0x00, 0x00, 0x0a, 0xf0, 0x01, 0x42, 0xac, 0x34, 0x98, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4d, 0x45, 0x07, 0xd5, 0x04, 0x02, 0x12, 0x11, 0x11, 0xf7, 0x65, 0x3d, 0x8b, 0x00, 0x00, 0x00, 0x4f, 0x49, 0x44, 0x41, 0x54, 0x08, 0xd7, 0x63, 0xf8, 0xff, 0xff, 0xff, 0xb9, 0xbd, 0x70, 0xf0, 0x8c, 0x01, 0xc8, 0xaf, 0x6e, 0x99, 0x02, 0x05, 0xd9, 0x7b, 0xc1, 0xfc, 0x6b, 0xff, 0xa1, 0xa0, 0x87, 0x30, 0xff, 0xd9, 0xde, 0xbd, 0xd5, 0x4b, 0xf7, 0xee, 0xfd, 0x0e, 0xe3, 0xef, 0xcd, 0x06, 0x19, 0x14, 0xf5, 0x1e, 0xce, 0xef, 0x01, 0x31, 0x92, 0xd7, 0x82, 0x41, 0x31, 0x9c, 0x3f, 0x07, 0x02, 0xee, 0xa1, 0xaa, 0xff, 0xff, 0x9f, 0xe1, 0xd9, 0x56, 0x30, 0xf8, 0x0e, 0xe5, 0x03, 0x00, 0xa9, 0x42, 0x84, 0x3d, 0xdf, 0x8f, 0xa6, 0x8f, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82, - } - _, err := Decode(bytes.NewReader(buf)) - if err != chunkOrderError { - t.Errorf("Decode: expected chunkOrderError for transparent gray8, got %v", err) - } -} |