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draw: skip TestFastPaths for Go 1.4.
Fixes golang/go#11921 Change-Id: Iafca8b21523d486ce9b2be494b8fb93216573968 Reviewed-on: https://go-review.googlesource.com/12861 Reviewed-by: Andrew Gerrand <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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 | ||
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| package draw | ||
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||
| // 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) | ||
|
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||
| 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) | ||
| } | ||
|
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||
| 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) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |