1 files changed, 96 insertions, 0 deletions
diff --git a/vendor/golang.org/x/image/draw/stdlib_test.go b/vendor/golang.org/x/image/draw/stdlib_test.go
new file mode 100644
index 000000000..c45f78c2e
--- /dev/null
+++ b/vendor/golang.org/x/image/draw/stdlib_test.go
@@ -0,0 +1,96 @@
+// Copyright 2015 The 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.
+
+// +build go1.5
+
+package draw
+
+// This file contains tests that depend on the exact behavior of the
+// image/color package in the standard library. The color conversion formula
+// from YCbCr to RGBA changed between Go 1.4 and Go 1.5, so this file's tests
+// are only enabled for Go 1.5 and above.
+
+import (
+	"bytes"
+	"image"
+	"image/color"
+	"testing"
+)
+
+// TestFastPaths tests that the fast path implementations produce identical
+// results to the generic implementation.
+func TestFastPaths(t *testing.T) {
+	drs := []image.Rectangle{
+		image.Rect(0, 0, 10, 10),   // The dst bounds.
+		image.Rect(3, 4, 8, 6),     // A strict subset of the dst bounds.
+		image.Rect(-3, -5, 2, 4),   // Partial out-of-bounds #0.
+		image.Rect(4, -2, 6, 12),   // Partial out-of-bounds #1.
+		image.Rect(12, 14, 23, 45), // Complete out-of-bounds.
+		image.Rect(5, 5, 5, 5),     // Empty.
+	}
+	srs := []image.Rectangle{
+		image.Rect(0, 0, 12, 9),    // The src bounds.
+		image.Rect(2, 2, 10, 8),    // A strict subset of the src bounds.
+		image.Rect(10, 5, 20, 20),  // Partial out-of-bounds #0.
+		image.Rect(-40, 0, 40, 8),  // Partial out-of-bounds #1.
+		image.Rect(-8, -8, -4, -4), // Complete out-of-bounds.
+		image.Rect(5, 5, 5, 5),     // Empty.
+	}
+	srcfs := []func(image.Rectangle) (image.Image, error){
+		srcGray,
+		srcNRGBA,
+		srcRGBA,
+		srcUnif,
+		srcYCbCr,
+	}
+	var srcs []image.Image
+	for _, srcf := range srcfs {
+		src, err := srcf(srs[0])
+		if err != nil {
+			t.Fatal(err)
+		}
+		srcs = append(srcs, src)
+	}
+	qs := []Interpolator{
+		NearestNeighbor,
+		ApproxBiLinear,
+		CatmullRom,
+	}
+	ops := []Op{
+		Over,
+		Src,
+	}
+	blue := image.NewUniform(color.RGBA{0x11, 0x22, 0x44, 0x7f})
+
+	for _, dr := range drs {
+		for _, src := range srcs {
+			for _, sr := range srs {
+				for _, transform := range []bool{false, true} {
+					for _, q := range qs {
+						for _, op := range ops {
+							dst0 := image.NewRGBA(drs[0])
+							dst1 := image.NewRGBA(drs[0])
+							Draw(dst0, dst0.Bounds(), blue, image.Point{}, Src)
+							Draw(dstWrapper{dst1}, dst1.Bounds(), srcWrapper{blue}, image.Point{}, Src)
+
+							if transform {
+								m := transformMatrix(3.75, 2, 1)
+								q.Transform(dst0, m, src, sr, op, nil)
+								q.Transform(dstWrapper{dst1}, m, srcWrapper{src}, sr, op, nil)
+							} else {
+								q.Scale(dst0, dr, src, sr, op, nil)
+								q.Scale(dstWrapper{dst1}, dr, srcWrapper{src}, sr, op, nil)
+							}
+
+							if !bytes.Equal(dst0.Pix, dst1.Pix) {
+								t.Errorf("pix differ for dr=%v, src=%T, sr=%v, transform=%t, q=%T",
+									dr, src, sr, transform, q)
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+}