Basic pixel tests for cc

BUG=


Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=171544

Review URL: https://chromiumcodereview.appspot.com/11412289

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171735 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 25 insertions, 0 deletions

diff --git a/cc/test/pixel_test_utils.h b/cc/test/pixel_test_utils.h
new file mode 100644
index 0000000..93367d8
--- /dev/null
+++ b/cc/test/pixel_test_utils.h
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/file_path.h"
+
+class SkBitmap;
+
+namespace cc {
+namespace test {
+
+// Encodes a bitmap into a PNG and write to disk. Returns true on success. The
+// parent directory does not have to exist.
+bool WritePNGFile(const SkBitmap& bitmap, const FilePath& file_path);
+
+// Reads and decodes a PNG image to a bitmap. Returns true on success. The PNG
+// should have been encoded using |gfx::PNGCodec::Encode|.
+bool ReadPNGFile(const FilePath& file_path, SkBitmap* bitmap);
+
+// Compares with a PNG file on disk, and returns true if it is the same as
+// the given image. |ref_img_path| is absolute.
+bool IsSameAsPNGFile(const SkBitmap& gen_bmp, FilePath ref_img_path);
+
+}  // namespace test
+}  // namespace cc