1 files changed, 153 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/scale_test.go b/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/scale_test.go
new file mode 100644
index 000000000..9c2468f11
--- /dev/null
+++ b/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/scale_test.go
@@ -0,0 +1,153 @@
+// Copyright 2011 The Graphics-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package graphics
+
+import (
+	"code.google.com/p/graphics-go/graphics/graphicstest"
+	"image"
+	"testing"
+
+	_ "image/png"
+)
+
+var scaleOneColorTests = []transformOneColorTest{
+	{
+		"down-half",
+		1, 1,
+		2, 2,
+		nil,
+		[]uint8{
+			0x80, 0x00,
+			0x00, 0x80,
+		},
+		[]uint8{
+			0x40,
+		},
+	},
+	{
+		"up-double",
+		4, 4,
+		2, 2,
+		nil,
+		[]uint8{
+			0x80, 0x00,
+			0x00, 0x80,
+		},
+		[]uint8{
+			0x80, 0x60, 0x20, 0x00,
+			0x60, 0x50, 0x30, 0x20,
+			0x20, 0x30, 0x50, 0x60,
+			0x00, 0x20, 0x60, 0x80,
+		},
+	},
+	{
+		"up-doublewidth",
+		4, 2,
+		2, 2,
+		nil,
+		[]uint8{
+			0x80, 0x00,
+			0x00, 0x80,
+		},
+		[]uint8{
+			0x80, 0x60, 0x20, 0x00,
+			0x00, 0x20, 0x60, 0x80,
+		},
+	},
+	{
+		"up-doubleheight",
+		2, 4,
+		2, 2,
+		nil,
+		[]uint8{
+			0x80, 0x00,
+			0x00, 0x80,
+		},
+		[]uint8{
+			0x80, 0x00,
+			0x60, 0x20,
+			0x20, 0x60,
+			0x00, 0x80,
+		},
+	},
+	{
+		"up-partial",
+		3, 3,
+		2, 2,
+		nil,
+		[]uint8{
+			0x80, 0x00,
+			0x00, 0x80,
+		},
+		[]uint8{
+			0x80, 0x40, 0x00,
+			0x40, 0x40, 0x40,
+			0x00, 0x40, 0x80,
+		},
+	},
+}
+
+func TestScaleOneColor(t *testing.T) {
+	for _, oc := range scaleOneColorTests {
+		dst := oc.newDst()
+		src := oc.newSrc()
+		if err := Scale(dst, src); err != nil {
+			t.Errorf("scale %s: %v", oc.desc, err)
+			continue
+		}
+
+		if !checkTransformTest(t, &oc, dst) {
+			continue
+		}
+	}
+}
+
+func TestScaleEmpty(t *testing.T) {
+	empty := image.NewRGBA(image.Rect(0, 0, 0, 0))
+	if err := Scale(empty, empty); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestScaleGopher(t *testing.T) {
+	dst := image.NewRGBA(image.Rect(0, 0, 100, 150))
+
+	src, err := graphicstest.LoadImage("../testdata/gopher.png")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	// Down-sample.
+	if err := Scale(dst, src); err != nil {
+		t.Fatal(err)
+	}
+	cmp, err := graphicstest.LoadImage("../testdata/gopher-100x150.png")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	err = graphicstest.ImageWithinTolerance(dst, cmp, 0)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	// Up-sample.
+	dst = image.NewRGBA(image.Rect(0, 0, 500, 750))
+	if err := Scale(dst, src); err != nil {
+		t.Fatal(err)
+	}
+	cmp, err = graphicstest.LoadImage("../testdata/gopher-500x750.png")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	err = graphicstest.ImageWithinTolerance(dst, cmp, 0)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+}