1 files changed, 78 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/convolve/convolve_test.go b/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/convolve/convolve_test.go
new file mode 100644
index 000000000..f34d7afc8
--- /dev/null
+++ b/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/convolve/convolve_test.go
@@ -0,0 +1,78 @@
+// 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 convolve
+
+import (
+	"code.google.com/p/graphics-go/graphics/graphicstest"
+	"image"
+	"reflect"
+	"testing"
+
+	_ "image/png"
+)
+
+func TestSeparableWeights(t *testing.T) {
+	sobelXFull := []float64{
+		-1, 0, 1,
+		-2, 0, 2,
+		-1, 0, 1,
+	}
+	sobelXSep := &SeparableKernel{
+		X: []float64{-1, 0, +1},
+		Y: []float64{1, 2, 1},
+	}
+	w := sobelXSep.Weights()
+	if !reflect.DeepEqual(w, sobelXFull) {
+		t.Errorf("got %v want %v", w, sobelXFull)
+	}
+}
+
+func TestConvolve(t *testing.T) {
+	kernFull, err := NewKernel([]float64{
+		0, 0, 0,
+		1, 1, 1,
+		0, 0, 0,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	kernSep := &SeparableKernel{
+		X: []float64{1, 1, 1},
+		Y: []float64{0, 1, 0},
+	}
+
+	src, err := graphicstest.LoadImage("../../testdata/gopher.png")
+	if err != nil {
+		t.Fatal(err)
+	}
+	b := src.Bounds()
+
+	sep := image.NewRGBA(b)
+	if err = Convolve(sep, src, kernSep); err != nil {
+		t.Fatal(err)
+	}
+
+	full := image.NewRGBA(b)
+	Convolve(full, src, kernFull)
+
+	err = graphicstest.ImageWithinTolerance(sep, full, 0x101)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestConvolveNil(t *testing.T) {
+	if err := Convolve(nil, nil, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestConvolveEmpty(t *testing.T) {
+	empty := image.NewRGBA(image.Rect(0, 0, 0, 0))
+	if err := Convolve(empty, empty, nil); err != nil {
+		t.Fatal(err)
+	}
+}