Enable webkit_compositor_unittests

webkit/compositor/TextureCopierTest.cpp

+// Copyright 2011 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 "config.h"
+
+#include "TextureCopier.h"
+
+#include "FakeWebGraphicsContext3D.h"
+#include "GraphicsContext3D.h"
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <wtf/RefPtr.h>
+
+using namespace WebCore;
+using namespace WebKit;
+using testing::InSequence;
+using testing::Test;
+using testing::_;
+
+class MockContext : public FakeWebGraphicsContext3D {
+public:
+    MOCK_METHOD2(bindFramebuffer, void(WGC3Denum, WebGLId));
+    MOCK_METHOD3(texParameteri, void(WGC3Denum target, WGC3Denum pname, WGC3Dint param));
+
+    MOCK_METHOD3(drawArrays, void(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count));
+};
+
+TEST(TextureCopierTest, testDrawArraysCopy)
+{
+    OwnPtr<MockContext> mockContext = adoptPtr(new MockContext);
+
+    {
+        InSequence sequence;
+
+        // Here we check just some essential properties of copyTexture() to avoid mirroring the full implementation.
+        EXPECT_CALL(*mockContext, bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, _));
+
+        // Make sure linear filtering is disabled during the copy.
+        EXPECT_CALL(*mockContext, texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::NEAREST));
+        EXPECT_CALL(*mockContext, texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::NEAREST));
+
+        EXPECT_CALL(*mockContext, drawArrays(_, _, _));
+
+        // Linear filtering should be restored.
+        EXPECT_CALL(*mockContext, texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR));
+        EXPECT_CALL(*mockContext, texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR));
+
+        // Default framebuffer should be restored
+        EXPECT_CALL(*mockContext, bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, 0));
+    }
+
+    int sourceTextureId = 1;
+    int destTextureId = 2;
+    IntSize size(256, 128);
+    OwnPtr<AcceleratedTextureCopier> copier(AcceleratedTextureCopier::create(mockContext.get(), false));
+    TextureCopier::Parameters copy = { sourceTextureId, destTextureId, size };
+    copier->copyTexture(copy);
+}