diff -r 000000000000 -r 6474c204b198 gfx/2d/unittest/TestDrawTargetBase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/2d/unittest/TestDrawTargetBase.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "2D.h"
+#include "TestBase.h"
+
+#define DT_WIDTH 500
+#define DT_HEIGHT 500
+
+/* This general DrawTarget test class can be reimplemented by a child class
+ * with optional additional drawtarget-specific tests. And is intended to run
+ * on a 500x500 32 BPP drawtarget.
+ */
+class TestDrawTargetBase : public TestBase
+{
+public:
+  void Initialized();
+  void FillCompletely();
+  void FillRect();
+
+protected:
+  TestDrawTargetBase();
+
+  void RefreshSnapshot();
+
+  void VerifyAllPixels(const mozilla::gfx::Color &aColor);
+  void VerifyPixel(const mozilla::gfx::IntPoint &aPoint,
+                   mozilla::gfx::Color &aColor);
+
+  uint32_t RGBAPixelFromColor(const mozilla::gfx::Color &aColor);
+
+  mozilla::RefPtr<mozilla::gfx::DrawTarget> mDT;
+  mozilla::RefPtr<mozilla::gfx::DataSourceSurface> mDataSnapshot;
+};