forked from disintegration/gift
/
gift_test.go
515 lines (485 loc) · 13.3 KB
/
gift_test.go
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package gift
import (
"image"
"image/color"
"image/draw"
"testing"
)
type testFilter struct {
z int
}
func (p *testFilter) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
dstBounds = image.Rect(0, 0, srcBounds.Dx()+p.z, srcBounds.Dy()+p.z*2)
return
}
func (p *testFilter) Draw(dst draw.Image, src image.Image, options *Options) {
dst.Set(dst.Bounds().Min.X, dst.Bounds().Min.Y, color.Gray{123})
return
}
func TestGIFT(t *testing.T) {
g := New()
if g.Parallelization() != defaultOptions.Parallelization {
t.Error("unexpected parallelization property")
}
g.SetParallelization(true)
if g.Parallelization() != true {
t.Error("unexpected parallelization property")
}
g.SetParallelization(false)
if g.Parallelization() != false {
t.Error("unexpected parallelization property")
}
g = New(
&testFilter{1},
&testFilter{2},
&testFilter{3},
)
if len(g.Filters) != 3 {
t.Error("unexpected filters count")
}
g.Add(
&testFilter{4},
&testFilter{5},
&testFilter{6},
)
if len(g.Filters) != 6 {
t.Error("unexpected filters count")
}
b := g.Bounds(image.Rect(0, 0, 1, 2))
if !b.Eq(image.Rect(0, 0, 22, 44)) {
t.Error("unexpected gift bounds")
}
g.Empty()
if len(g.Filters) != 0 {
t.Error("unexpected filters count")
}
b = g.Bounds(image.Rect(0, 0, 1, 2))
if !b.Eq(image.Rect(0, 0, 1, 2)) {
t.Error("unexpected gift bounds")
}
g = &GIFT{}
src := image.NewGray(image.Rect(-1, -1, 1, 1))
src.Pix = []uint8{
1, 2,
3, 4,
}
dst := image.NewGray(g.Bounds(src.Bounds()))
g.Draw(dst, src)
if !dst.Bounds().Size().Eq(src.Bounds().Size()) {
t.Error("unexpected dst bounds")
}
for i := range dst.Pix {
if dst.Pix[i] != src.Pix[i] {
t.Error("unexpected dst pix")
}
}
g.Add(&testFilter{1})
g.Add(&testFilter{2})
dst = image.NewGray(g.Bounds(src.Bounds()))
g.Draw(dst, src)
if dst.Bounds().Dx() != src.Bounds().Dx()+3 || dst.Bounds().Dy() != src.Bounds().Dy()+6 {
t.Error("unexpected dst bounds")
}
if dst.Pix[0] != 123 {
t.Error("unexpected dst pix")
}
}
func TestDrawAt(t *testing.T) {
testDataGray := []struct {
desc string
filters []Filter
pt image.Point
op Operator
srcb, dstb image.Rectangle
srcPix, dstPix0, dstPix1 []uint8
}{
{
"draw at (Gray, [], -2, -2, copy)",
[]Filter{},
image.Pt(-2, -2),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{1, 2, 3, 0, 4, 5, 6, 0, 7, 8, 9, 0, 0, 0, 0, 0},
},
{
"draw at (Gray, [], -1, -1, copy)",
[]Filter{},
image.Pt(-1, -1),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{0, 0, 0, 0, 0, 1, 2, 3, 0, 4, 5, 6, 0, 7, 8, 9},
},
{
"draw at (Gray, [], 0, 0, copy)",
[]Filter{},
image.Pt(0, 0),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 0, 4, 5},
},
{
"draw at (Gray, [], 2, 2, copy)",
[]Filter{},
image.Pt(2, 2),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
},
{
"draw at (Gray, [], 0, -10, copy)",
[]Filter{},
image.Pt(0, -10),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
},
{
"draw at (Gray, [], -3, -3, copy)",
[]Filter{},
image.Pt(-3, -3),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{5, 6, 0, 0, 8, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
},
{
"draw at (Gray, [], -3, -3, over)",
[]Filter{},
image.Pt(-3, -3),
OverOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{5, 6, 0, 0, 8, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
},
{
"draw at (Gray, [Resize], -2, -2, copy)",
[]Filter{Resize(6, 6, NearestNeighborResampling)},
image.Pt(-2, -2),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{1, 1, 2, 2, 1, 1, 2, 2, 4, 4, 5, 5, 4, 4, 5, 5},
},
{
"draw at (Gray, [Resize], -3, -3, copy)",
[]Filter{Resize(6, 6, NearestNeighborResampling)},
image.Pt(-3, -3),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{1, 2, 2, 3, 4, 5, 5, 6, 4, 5, 5, 6, 7, 8, 8, 9},
},
{
"draw at (Gray, [Resize], -1, -1, copy)",
[]Filter{Resize(6, 6, NearestNeighborResampling)},
image.Pt(-1, -1),
CopyOperator,
image.Rect(-1, -1, 2, 2),
image.Rect(-2, -2, 2, 2),
[]uint8{1, 2, 3, 4, 5, 6, 7, 8, 9},
[]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
[]uint8{0, 0, 0, 0, 0, 1, 1, 2, 0, 1, 1, 2, 0, 4, 4, 5},
},
{
"draw at (Gray, [Resize], -1, -1, copy, empty)",
[]Filter{Resize(6, 6, NearestNeighborResampling)},
image.Pt(-1, -1),
CopyOperator,
image.Rect(0, 0, 0, 0),
image.Rect(0, 0, 0, 0),
[]uint8{},
[]uint8{},
[]uint8{},
},
}
for _, d := range testDataGray {
src := image.NewGray(d.srcb)
src.Pix = d.srcPix
g := New(d.filters...)
dst := image.NewGray(d.dstb)
dst.Pix = d.dstPix0
g.DrawAt(dst, src, d.pt, d.op)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix1) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
testDataNRGBA := []struct {
desc string
filters []Filter
pt image.Point
op Operator
srcb, dstb image.Rectangle
srcPix, dstPix0, dstPix1 []uint8
}{
{
"draw at (NRGBA, [], 1, 1, over, 0% 100% alpha)",
[]Filter{},
image.Pt(1, 1),
OverOperator,
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 3),
[]uint8{
10, 20, 30, 255, 40, 50, 60, 255,
100, 200, 0, 255, 0, 250, 200, 255,
},
[]uint8{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
},
[]uint8{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 10, 20, 30, 255, 40, 50, 60, 255,
0, 0, 0, 0, 100, 200, 0, 255, 0, 250, 200, 255,
},
},
{
"draw at (NRGBA, [], 1, 1, over, 0% 50% alpha)",
[]Filter{},
image.Pt(1, 1),
OverOperator,
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 3),
[]uint8{
10, 20, 30, 127, 40, 50, 60, 127,
100, 200, 0, 127, 0, 250, 200, 127,
},
[]uint8{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
},
[]uint8{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 10, 20, 30, 127, 40, 50, 60, 127,
0, 0, 0, 0, 100, 200, 0, 127, 0, 250, 200, 127,
},
},
{
"draw at (NRGBA, [], 1, 1, over, 100% 50% alpha)",
[]Filter{},
image.Pt(1, 1),
OverOperator,
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 3),
[]uint8{
10, 20, 30, 128, 40, 50, 60, 128,
100, 200, 0, 128, 0, 250, 200, 128,
},
[]uint8{
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
},
[]uint8{
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 5, 10, 15, 255, 20, 25, 30, 255,
0, 0, 0, 255, 50, 100, 0, 255, 0, 125, 100, 255,
},
},
{
"draw at (NRGBA, [], 1, 1, over, 100% 25% alpha)",
[]Filter{},
image.Pt(1, 1),
OverOperator,
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 3),
[]uint8{
20, 40, 80, 64, 40, 80, 120, 64,
100, 200, 0, 64, 0, 100, 200, 64,
},
[]uint8{
0, 0, 0, 255, 1, 2, 3, 255, 0, 0, 0, 255,
0, 0, 0, 255, 40, 80, 120, 255, 40, 40, 40, 255,
0, 0, 0, 255, 200, 200, 12, 255, 0, 0, 0, 255,
},
[]uint8{
0, 0, 0, 255, 1, 2, 3, 255, 0, 0, 0, 255,
0, 0, 0, 255, 35, 70, 110, 255, 40, 50, 60, 255,
0, 0, 0, 255, 175, 200, 9, 255, 0, 25, 50, 255,
},
},
{
"draw at (NRGBA, [], 1, 1, over, shape)",
[]Filter{},
image.Pt(1, 1),
OverOperator,
image.Rect(0, 0, 2, 2),
image.Rect(0, 0, 3, 3),
[]uint8{
100, 100, 100, 255, 100, 100, 100, 255,
100, 100, 100, 255, 100, 100, 100, 0,
},
[]uint8{
10, 10, 10, 255, 10, 10, 10, 255, 10, 10, 10, 255,
10, 10, 10, 255, 10, 10, 10, 255, 10, 10, 10, 255,
10, 10, 10, 255, 10, 10, 10, 255, 10, 10, 10, 255,
},
[]uint8{
10, 10, 10, 255, 10, 10, 10, 255, 10, 10, 10, 255,
10, 10, 10, 255, 100, 100, 100, 255, 100, 100, 100, 255,
10, 10, 10, 255, 100, 100, 100, 255, 10, 10, 10, 255,
},
},
}
for _, d := range testDataNRGBA {
src := image.NewNRGBA(d.srcb)
src.Pix = d.srcPix
g := New(d.filters...)
dst := image.NewNRGBA(d.dstb)
dst.Pix = d.dstPix0
g.DrawAt(dst, src, d.pt, d.op)
if !checkBoundsAndPix(dst.Bounds(), d.dstb, dst.Pix, d.dstPix1) {
t.Errorf("test [%s] failed: %#v, %#v", d.desc, dst.Bounds(), dst.Pix)
}
}
}
type fakeDrawImage struct {
r image.Rectangle
}
func (p fakeDrawImage) Bounds() image.Rectangle { return p.r }
func (p fakeDrawImage) At(x, y int) color.Color { return color.NRGBA{0, 0, 0, 0} }
func (p fakeDrawImage) ColorModel() color.Model { return color.NRGBAModel }
func (p fakeDrawImage) Set(x, y int, c color.Color) {}
func TestSubImage(t *testing.T) {
testData := []struct {
desc string
img draw.Image
ok bool
}{
{
"sub image (Gray)",
image.NewGray(image.Rect(0, 0, 10, 10)),
true,
},
{
"sub image (Gray16)",
image.NewGray16(image.Rect(0, 0, 10, 10)),
true,
},
{
"sub image (RGBA)",
image.NewRGBA(image.Rect(0, 0, 10, 10)),
true,
},
{
"sub image (RGBA64)",
image.NewRGBA64(image.Rect(0, 0, 10, 10)),
true,
},
{
"sub image (NRGBA)",
image.NewNRGBA(image.Rect(0, 0, 10, 10)),
true,
},
{
"sub image (NRGBA64)",
image.NewNRGBA64(image.Rect(0, 0, 10, 10)),
true,
},
{
"sub image (fake)",
fakeDrawImage{image.Rect(0, 0, 10, 10)},
false,
},
}
for _, d := range testData {
simg, ok := getSubImage(d.img, image.Pt(3, 3))
if ok != d.ok {
t.Errorf("test [%s] failed: expected %#v, got %#v", d.desc, d.ok, ok)
} else if ok {
simg.Set(5, 5, color.NRGBA{255, 255, 255, 255})
r, g, b, a := d.img.At(5, 5).RGBA()
if r != 0xffff || g != 0xffff || b != 0xffff || a != 0xffff {
t.Errorf("test [%s] failed: expected (0xffff, 0xffff, 0xffff, 0xffff), got (%d, %d, %d, %d)", d.desc, r, g, b, a)
}
}
}
}
func TestDraw(t *testing.T) {
filters := [][]Filter{
[]Filter{},
[]Filter{Resize(2, 2, NearestNeighborResampling), Crop(image.Rect(0, 0, 1, 1))},
[]Filter{Resize(2, 2, NearestNeighborResampling), CropToSize(1, 1, CenterAnchor)},
[]Filter{FlipHorizontal()},
[]Filter{FlipVertical()},
[]Filter{Resize(2, 2, NearestNeighborResampling), Resize(1, 1, NearestNeighborResampling)},
[]Filter{Resize(2, 2, NearestNeighborResampling), ResizeToFit(1, 1, NearestNeighborResampling)},
[]Filter{Resize(2, 2, NearestNeighborResampling), ResizeToFill(1, 1, NearestNeighborResampling, CenterAnchor)},
[]Filter{Rotate(45, color.NRGBA{0, 0, 0, 0}, NearestNeighborInterpolation)},
[]Filter{Rotate90()},
[]Filter{Rotate180()},
[]Filter{Rotate270()},
[]Filter{Transpose()},
[]Filter{Transverse()},
[]Filter{Brightness(10)},
[]Filter{ColorBalance(10, 10, 10)},
[]Filter{ColorFunc(func(r0, g0, b0, a0 float32) (r, g, b, a float32) { return 1, 1, 1, 1 })},
[]Filter{Colorize(240, 50, 100)},
[]Filter{ColorspaceLinearToSRGB()},
[]Filter{ColorspaceSRGBToLinear()},
[]Filter{Contrast(10)},
[]Filter{Convolution([]float32{-1, -1, 0, -1, 1, 1, 0, 1, 1}, false, false, false, 0.0)},
[]Filter{Gamma(1.1)},
[]Filter{GaussianBlur(3)},
[]Filter{Grayscale()},
[]Filter{Hue(90)},
[]Filter{Invert()},
[]Filter{Maximum(3, true)},
[]Filter{Minimum(3, true)},
[]Filter{Mean(3, true)},
[]Filter{Median(3, true)},
[]Filter{Saturation(10)},
[]Filter{Sepia(10)},
[]Filter{Sigmoid(0.5, 5)},
[]Filter{Sobel()},
[]Filter{UnsharpMask(1.0, 1.5, 0.001)},
}
for i, f := range filters {
src := image.NewNRGBA(image.Rect(1, 1, 2, 2))
src.Pix = []uint8{255, 255, 255, 255}
g := New(f...)
dst := image.NewNRGBA(image.Rect(-100, -100, -95, -95))
g.Draw(dst, src)
for x := dst.Bounds().Min.X; x < dst.Bounds().Max.X; x++ {
for y := dst.Bounds().Min.Y; y < dst.Bounds().Max.Y; y++ {
failed := false
if x == -100 && y == -100 {
if (dst.NRGBAAt(x, y) == color.NRGBA{0, 0, 0, 0}) {
failed = true
}
} else {
if (dst.NRGBAAt(x, y) != color.NRGBA{0, 0, 0, 0}) {
failed = true
}
}
if failed {
t.Errorf("test draw pos failed: %d %#v %#v", i, f, dst.Pix)
}
}
}
}
}