70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
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// Copyright 2011 The Graphics-Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package graphics
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import (
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"bytes"
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"code.google.com/p/graphics-go/graphics/graphicstest"
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"image"
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"image/color"
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"testing"
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)
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type transformOneColorTest struct {
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desc string
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dstWidth int
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dstHeight int
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srcWidth int
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srcHeight int
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opt interface{}
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src []uint8
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res []uint8
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}
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func (oc *transformOneColorTest) newSrc() *image.RGBA {
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b := image.Rect(0, 0, oc.srcWidth, oc.srcHeight)
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src := image.NewRGBA(b)
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i := 0
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for y := b.Min.Y; y < b.Max.Y; y++ {
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for x := b.Min.X; x < b.Max.X; x++ {
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src.SetRGBA(x, y, color.RGBA{
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R: oc.src[i],
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G: oc.src[i],
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B: oc.src[i],
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A: oc.src[i],
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})
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i++
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}
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}
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return src
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}
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func (oc *transformOneColorTest) newDst() *image.RGBA {
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return image.NewRGBA(image.Rect(0, 0, oc.dstWidth, oc.dstHeight))
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}
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func checkTransformTest(t *testing.T, oc *transformOneColorTest, dst *image.RGBA) bool {
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for ch := 0; ch < 4; ch++ {
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i := 0
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res := make([]byte, len(oc.res))
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for y := 0; y < oc.dstHeight; y++ {
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for x := 0; x < oc.dstWidth; x++ {
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off := (y-dst.Rect.Min.Y)*dst.Stride + (x-dst.Rect.Min.X)*4
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res[i] = dst.Pix[off+ch]
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i++
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}
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}
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if !bytes.Equal(res, oc.res) {
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got := graphicstest.SprintBox(res, oc.dstWidth, oc.dstHeight)
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want := graphicstest.SprintBox(oc.res, oc.dstWidth, oc.dstHeight)
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t.Errorf("%s: ch=%d\n got\n%s\n want\n%s", oc.desc, ch, got, want)
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return false
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}
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}
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return true
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}
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