tests

.gitignore

@@ -0,0 +1,3 @@
+child_porn
+imageutils.test
+cpu.out

go.mod

@@ -1,3 +1,5 @@
 module github.com/potassium5703/imageutils
 
-go 1.21.4
+go 1.22.6
+
+require github.com/potassium5703/texture v0.0.0-20240820054037-fce43fc4b0f0 // indirect

go.sum

@@ -0,0 +1,2 @@
+github.com/potassium5703/texture v0.0.0-20240820054037-fce43fc4b0f0 h1:sowjIIVme5ovcdB0kjP3w+4xbVNrlOPdx7Up4LIGJz8=
+github.com/potassium5703/texture v0.0.0-20240820054037-fce43fc4b0f0/go.mod h1:KwM7hMpZhr3XySWuK/SZ7s1BXVQe8p1IyZftYg9KtWY=

scale_test.go

@@ -0,0 +1,33 @@
+package imageutils
+
+import (
+	"image"
+	"image/color"
+	"image/draw"
+	"image/png"
+	"io"
+	"testing"
+
+	"github.com/potassium5703/texture"
+)
+
+func Render(img image.Image, rect image.Rectangle) image.Image {
+	newimg := image.NewRGBA(rect)
+	draw.Draw(newimg, rect, image.White, image.ZP, draw.Src)
+	draw.Draw(newimg, rect, img, image.ZP, draw.Over)
+	return newimg
+}
+
+func BenchmarkScale(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		err := png.Encode(io.Discard,
+			Scale(Render(
+				texture.New(color.White, color.Black, 2),
+				image.Rect(0, 0, 32, 32),
+			), 32),
+		)
+		if err != nil {
+			panic(err)
+		}
+	}
+}