restorable: Add TestMutateSlices

This commit is contained in:
Hajime Hoshi 2019-09-29 02:01:29 +09:00
parent 9cb631e30f
commit 6c8c064a58

View File

@ -788,3 +788,43 @@ func TestFill(t *testing.T) {
} }
} }
} }
func TestMutateSlices(t *testing.T) {
const w, h = 16, 16
dst := NewImage(w, h, false)
src := NewImage(w, h, false)
pix := make([]byte, 4*w*h)
for i := 0; i < w*h; i++ {
pix[4*i] = byte(i)
pix[4*i+1] = byte(i)
pix[4*i+2] = byte(i)
pix[4*i+3] = 0xff
}
src.ReplacePixels(pix, 0, 0, w, h)
vs := quadVertices(w, h, 0, 0)
is := graphics.QuadIndices()
dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
for i := range vs {
vs[i] = 0
}
for i := range is {
is[i] = 0
}
ResolveStaleImages()
if err := RestoreIfNeeded(); err != nil {
t.Fatal(err)
}
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
r, g, b, a := src.At(i, j)
want := color.RGBA{r, g, b, a}
r, g, b, a = dst.At(i, j)
got := color.RGBA{r, g, b, a}
if !sameColors(got, want, 1) {
t.Errorf("(%d, %d): got %v, want %v", i, j, got, want)
}
}
}
}