replace zxq.co/ripple/hanayo

vendor/github.com/nfnt/resize/thumbnail_test.go

@@ -0,0 +1,47 @@
+package resize
+
+import (
+	"image"
+	"runtime"
+	"testing"
+)
+
+func init() {
+	runtime.GOMAXPROCS(runtime.NumCPU())
+}
+
+var thumbnailTests = []struct {
+	origWidth      int
+	origHeight     int
+	maxWidth       uint
+	maxHeight      uint
+	expectedWidth  uint
+	expectedHeight uint
+}{
+	{5, 5, 10, 10, 5, 5},
+	{10, 10, 5, 5, 5, 5},
+	{10, 50, 10, 10, 2, 10},
+	{50, 10, 10, 10, 10, 2},
+	{50, 100, 60, 90, 45, 90},
+	{120, 100, 60, 90, 60, 50},
+	{200, 250, 200, 150, 120, 150},
+}
+
+func TestThumbnail(t *testing.T) {
+	for i, tt := range thumbnailTests {
+		img := image.NewGray16(image.Rect(0, 0, tt.origWidth, tt.origHeight))
+
+		outImg := Thumbnail(tt.maxWidth, tt.maxHeight, img, NearestNeighbor)
+
+		newWidth := uint(outImg.Bounds().Dx())
+		newHeight := uint(outImg.Bounds().Dy())
+		if newWidth != tt.expectedWidth ||
+			newHeight != tt.expectedHeight {
+			t.Errorf("%d. Thumbnail(%v, %v, img, NearestNeighbor) => "+
+				"width: %v, height: %v, want width: %v, height: %v",
+				i, tt.maxWidth, tt.maxHeight,
+				newWidth, newHeight, tt.expectedWidth, tt.expectedHeight,
+			)
+		}
+	}
+}