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Add TestImageReplacePixels

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This commit is contained in:
Hajime Hoshi 2015-01-21 01:46:30 +09:00
parent fe62cbd357
commit 3aed28b4a7
1 changed files with 49 additions and 11 deletions
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60
image_test.go
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@ -18,6 +18,7 @@ import (
. "github.com/hajimehoshi/ebiten" . "github.com/hajimehoshi/ebiten"
"image" "image"
"image/color" "image/color"
"image/draw"
_ "image/png" _ "image/png"
"math" "math"
"testing" "testing"
@ -25,13 +26,21 @@ import (
var ebitenImageBin = "" var ebitenImageBin = ""
func openImage(path string) (*Image, image.Image, error) { func openImage(path string) (image.Image, error) {
file, err := readFile(path) file, err := readFile(path)
if err != nil { if err != nil {
return nil, nil, err return nil, err
} }
img, _, err := image.Decode(file) img, _, err := image.Decode(file)
if err != nil {
return nil, err
}
return img, nil
}
func openEbitenImage(path string) (*Image, image.Image, error) {
img, err := openImage(path)
if err != nil { if err != nil {
return nil, nil, err return nil, nil, err
} }
@ -51,22 +60,22 @@ func diff(x, y uint8) uint8 {
} }
func TestImagePixels(t *testing.T) { func TestImagePixels(t *testing.T) {
eimg, img, err := openImage("testdata/ebiten.png") img0, img, err := openEbitenImage("testdata/ebiten.png")
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
return return
} }
if got := eimg.Bounds().Size(); got != img.Bounds().Size() { if got := img0.Bounds().Size(); got != img.Bounds().Size() {
t.Errorf("img size: got %d; want %d", got, img.Bounds().Size()) t.Errorf("img size: got %d; want %d", got, img.Bounds().Size())
} }
for j := 0; j < eimg.Bounds().Size().Y; j++ { for j := 0; j < img0.Bounds().Size().Y; j++ {
for i := 0; i < eimg.Bounds().Size().X; i++ { for i := 0; i < img0.Bounds().Size().X; i++ {
got := eimg.At(i, j) got := img0.At(i, j)
want := color.RGBAModel.Convert(img.At(i, j)) want := color.RGBAModel.Convert(img.At(i, j))
if got != want { if got != want {
t.Errorf("img At(%d, %d): got %#v; want %#v", i, j, got, want) t.Errorf("img0 At(%d, %d): got %#v; want %#v", i, j, got, want)
} }
} }
} }
@ -76,7 +85,7 @@ func TestImageComposition(t *testing.T) {
img2Color := color.NRGBA{0x24, 0x3f, 0x6a, 0x88} img2Color := color.NRGBA{0x24, 0x3f, 0x6a, 0x88}
img3Color := color.NRGBA{0x85, 0xa3, 0x08, 0xd3} img3Color := color.NRGBA{0x85, 0xa3, 0x08, 0xd3}
img1, _, err := openImage("testdata/ebiten.png") img1, _, err := openEbitenImage("testdata/ebiten.png")
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
return return
@ -136,7 +145,7 @@ func TestImageComposition(t *testing.T) {
} }
func TestImageSelf(t *testing.T) { func TestImageSelf(t *testing.T) {
img, _, err := openImage("testdata/ebiten.png") img, _, err := openEbitenImage("testdata/ebiten.png")
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
return return
@ -147,7 +156,7 @@ func TestImageSelf(t *testing.T) {
} }
func TestImageDotByDotInversion(t *testing.T) { func TestImageDotByDotInversion(t *testing.T) {
img0, _, err := openImage("testdata/ebiten.png") img0, _, err := openEbitenImage("testdata/ebiten.png")
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
return return
@ -174,4 +183,33 @@ func TestImageDotByDotInversion(t *testing.T) {
} }
} }
func TestReplacePixels(t *testing.T) {
origImg, err := openImage("testdata/ebiten.png")
if err != nil {
t.Fatal(err)
return
}
// Convert to RGBA
img := image.NewRGBA(origImg.Bounds())
draw.Draw(img, img.Bounds(), origImg, image.ZP, draw.Src)
size := img.Bounds().Size()
img0, err := NewImage(size.X, size.Y, FilterNearest)
if err != nil {
t.Fatal(err)
return
}
img0.ReplacePixels(img.Pix)
for j := 0; j < img0.Bounds().Size().Y; j++ {
for i := 0; i < img0.Bounds().Size().X; i++ {
got := img.At(i, j)
want := img0.At(i, j)
if got != want {
t.Errorf("img0 At(%d, %d): got %#v; want %#v", i, j, got, want)
}
}
}
}
// TODO: Add more tests (e.g. DrawImage with color matrix) // TODO: Add more tests (e.g. DrawImage with color matrix)