diff options
Diffstat (limited to 'src/pkg/image/image_test.go')
| -rw-r--r-- | src/pkg/image/image_test.go | 84 |
1 files changed, 60 insertions, 24 deletions
diff --git a/src/pkg/image/image_test.go b/src/pkg/image/image_test.go index 17e314795..5469d6423 100644 --- a/src/pkg/image/image_test.go +++ b/src/pkg/image/image_test.go @@ -8,6 +8,13 @@ import ( "testing" ) +type image interface { + Image + Opaque() bool + Set(int, int, Color) + SubImage(Rectangle) Image +} + func cmp(t *testing.T, cm ColorModel, c0, c1 Color) bool { r0, g0, b0, a0 := cm.Convert(c0).RGBA() r1, g1, b1, a1 := cm.Convert(c1).RGBA() @@ -15,12 +22,7 @@ func cmp(t *testing.T, cm ColorModel, c0, c1 Color) bool { } func TestImage(t *testing.T) { - type buffered interface { - Image - Set(int, int, Color) - SubImage(Rectangle) Image - } - testImage := []Image{ + testImage := []image{ NewRGBA(10, 10), NewRGBA64(10, 10), NewNRGBA(10, 10), @@ -35,36 +37,70 @@ func TestImage(t *testing.T) { }), } for _, m := range testImage { - b := m.(buffered) - if !Rect(0, 0, 10, 10).Eq(b.Bounds()) { - t.Errorf("%T: want bounds %v, got %v", b, Rect(0, 0, 10, 10), b.Bounds()) + if !Rect(0, 0, 10, 10).Eq(m.Bounds()) { + t.Errorf("%T: want bounds %v, got %v", m, Rect(0, 0, 10, 10), m.Bounds()) + continue + } + if !cmp(t, m.ColorModel(), Transparent, m.At(6, 3)) { + t.Errorf("%T: at (6, 3), want a zero color, got %v", m, m.At(6, 3)) continue } - if !cmp(t, b.ColorModel(), Transparent, b.At(6, 3)) { - t.Errorf("%T: at (6, 3), want a zero color, got %v", b, b.At(6, 3)) + m.Set(6, 3, Opaque) + if !cmp(t, m.ColorModel(), Opaque, m.At(6, 3)) { + t.Errorf("%T: at (6, 3), want a non-zero color, got %v", m, m.At(6, 3)) continue } - b.Set(6, 3, Opaque) - if !cmp(t, b.ColorModel(), Opaque, b.At(6, 3)) { - t.Errorf("%T: at (6, 3), want a non-zero color, got %v", b, b.At(6, 3)) + if !m.SubImage(Rect(6, 3, 7, 4)).(image).Opaque() { + t.Errorf("%T: at (6, 3) was not opaque", m) continue } - b = b.SubImage(Rect(3, 2, 9, 8)).(buffered) - if !Rect(3, 2, 9, 8).Eq(b.Bounds()) { - t.Errorf("%T: sub-image want bounds %v, got %v", b, Rect(3, 2, 9, 8), b.Bounds()) + m = m.SubImage(Rect(3, 2, 9, 8)).(image) + if !Rect(3, 2, 9, 8).Eq(m.Bounds()) { + t.Errorf("%T: sub-image want bounds %v, got %v", m, Rect(3, 2, 9, 8), m.Bounds()) continue } - if !cmp(t, b.ColorModel(), Opaque, b.At(6, 3)) { - t.Errorf("%T: sub-image at (6, 3), want a non-zero color, got %v", b, b.At(6, 3)) + if !cmp(t, m.ColorModel(), Opaque, m.At(6, 3)) { + t.Errorf("%T: sub-image at (6, 3), want a non-zero color, got %v", m, m.At(6, 3)) continue } - if !cmp(t, b.ColorModel(), Transparent, b.At(3, 3)) { - t.Errorf("%T: sub-image at (3, 3), want a zero color, got %v", b, b.At(3, 3)) + if !cmp(t, m.ColorModel(), Transparent, m.At(3, 3)) { + t.Errorf("%T: sub-image at (3, 3), want a zero color, got %v", m, m.At(3, 3)) + continue + } + m.Set(3, 3, Opaque) + if !cmp(t, m.ColorModel(), Opaque, m.At(3, 3)) { + t.Errorf("%T: sub-image at (3, 3), want a non-zero color, got %v", m, m.At(3, 3)) + continue + } + } +} + +func Test16BitsPerColorChannel(t *testing.T) { + testColorModel := []ColorModel{ + RGBA64ColorModel, + NRGBA64ColorModel, + Alpha16ColorModel, + Gray16ColorModel, + } + for _, cm := range testColorModel { + c := cm.Convert(RGBA64Color{0x1234, 0x1234, 0x1234, 0x1234}) // Premultiplied alpha. + r, _, _, _ := c.RGBA() + if r != 0x1234 { + t.Errorf("%T: want red value 0x%04x got 0x%04x", c, 0x1234, r) continue } - b.Set(3, 3, Opaque) - if !cmp(t, b.ColorModel(), Opaque, b.At(3, 3)) { - t.Errorf("%T: sub-image at (3, 3), want a non-zero color, got %v", b, b.At(3, 3)) + } + testImage := []image{ + NewRGBA64(10, 10), + NewNRGBA64(10, 10), + NewAlpha16(10, 10), + NewGray16(10, 10), + } + for _, m := range testImage { + m.Set(1, 2, NRGBA64Color{0xffff, 0xffff, 0xffff, 0x1357}) // Non-premultiplied alpha. + r, _, _, _ := m.At(1, 2).RGBA() + if r != 0x1357 { + t.Errorf("%T: want red value 0x%04x got 0x%04x", m, 0x1357, r) continue } } |