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graphics: Improve TestImageTooManyFill

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This commit is contained in:
Hajime Hoshi 2017-12-06 20:53:02 +09:00
parent f350f55088
commit e206c16fc6
1 changed files with 8 additions and 2 deletions
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10
image_test.go
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@ -559,6 +559,10 @@ func TestImageEdge(t *testing.T) {
} }
} }
func indexToColor(index int) uint8 {
return uint8((17 * index) % 256)
}
// Issue #419 // Issue #419
func TestImageTooManyFill(t *testing.T) { func TestImageTooManyFill(t *testing.T) {
const width = 1024 const width = 1024
@ -566,15 +570,17 @@ func TestImageTooManyFill(t *testing.T) {
src, _ := NewImage(1, 1, FilterNearest) src, _ := NewImage(1, 1, FilterNearest)
dst, _ := NewImage(width, 1, FilterNearest) dst, _ := NewImage(width, 1, FilterNearest)
for i := 0; i < width; i++ { for i := 0; i < width; i++ {
src.Fill(color.RGBA{uint8(i), uint8(i), uint8(i), 0xff}) c := indexToColor(i)
src.Fill(color.RGBA{c, c, c, 0xff})
op := &DrawImageOptions{} op := &DrawImageOptions{}
op.GeoM.Translate(float64(i), 0) op.GeoM.Translate(float64(i), 0)
dst.DrawImage(src, op) dst.DrawImage(src, op)
} }
for i := 0; i < width; i++ { for i := 0; i < width; i++ {
c := indexToColor(i)
got := color.RGBAModel.Convert(dst.At(i, 0)) got := color.RGBAModel.Convert(dst.At(i, 0))
want := color.RGBA{uint8(i), uint8(i), uint8(i), 0xff} want := color.RGBA{c, c, c, 0xff}
if got != want { if got != want {
t.Errorf("src At(%d, %d): got %#v, want: %#v", i, 0, got, want) t.Errorf("src At(%d, %d): got %#v, want: %#v", i, 0, got, want)
} }