cc: BlockingTaskRunner without MessageLoopProxy

cc/trees/layer_tree_host_unittest_no_message_loop.cc

Index: cc/trees/layer_tree_host_unittest_no_message_loop.cc
diff --git a/cc/trees/layer_tree_host_unittest_no_message_loop.cc b/cc/trees/layer_tree_host_unittest_no_message_loop.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4c6796f30211a2b2301c0499d5724be27984862f
--- /dev/null
+++ b/cc/trees/layer_tree_host_unittest_no_message_loop.cc
@@ -0,0 +1,235 @@
+// Copyright 2014 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/message_loop/message_loop_proxy.h"
+#include "base/threading/simple_thread.h"
+#include "cc/layers/delegated_frame_provider.h"
+#include "cc/layers/delegated_frame_resource_collection.h"
+#include "cc/layers/delegated_renderer_layer.h"
+#include "cc/layers/layer.h"
+#include "cc/layers/solid_color_layer.h"
+#include "cc/output/delegated_frame_data.h"
+#include "cc/output/output_surface.h"
+#include "cc/output/output_surface_client.h"
+#include "cc/resources/resource_provider.h"
+#include "cc/test/fake_delegated_renderer_layer.h"
+#include "cc/test/test_context_provider.h"
+#include "cc/trees/layer_tree_host.h"
+#include "cc/trees/layer_tree_host_client.h"
+#include "cc/trees/layer_tree_host_single_thread_client.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/frame_time.h"
+
+namespace cc {
+namespace {
+
+class NoMessageLoopOutputSurface : public OutputSurface {
+ public:
+  NoMessageLoopOutputSurface() : OutputSurface(TestContextProvider::Create()) {}
+  virtual ~NoMessageLoopOutputSurface() {}
+
+  // OutputSurface overrides.
+  virtual void SwapBuffers(CompositorFrame* frame) OVERRIDE {
+    DCHECK(client_);
+    client_->DidSwapBuffers();
+    client_->DidSwapBuffersComplete();
+  }
+};
+
+class LayerTreeHostNoMessageLoopTest
+    : public testing::Test,
+      public base::DelegateSimpleThread::Delegate,
+      public LayerTreeHostClient,
+      public LayerTreeHostSingleThreadClient {
+ public:
+  LayerTreeHostNoMessageLoopTest()
+      : did_initialize_output_surface_(false),
+        did_commit_(false),
+        did_commit_and_draw_frame_(false),
+        size_(100, 100),
+        no_loop_thread_(this, "LayerTreeHostNoMessageLoopTest") {}
+  virtual ~LayerTreeHostNoMessageLoopTest() {}
+
+  // LayerTreeHostClient overrides.
+  virtual void WillBeginMainFrame(int frame_id) OVERRIDE {}
+  virtual void DidBeginMainFrame() OVERRIDE {}
+  virtual void Animate(base::TimeTicks frame_begin_time) OVERRIDE {}
+  virtual void Layout() OVERRIDE {}
+  virtual void ApplyScrollAndScale(const gfx::Vector2d& scroll_delta,
+                                   float page_scale) OVERRIDE {}
+  virtual scoped_ptr<OutputSurface> CreateOutputSurface(
+      bool fallback) OVERRIDE {
+    return make_scoped_ptr<OutputSurface>(new NoMessageLoopOutputSurface);
+  }
+  virtual void DidInitializeOutputSurface() OVERRIDE {
+    did_initialize_output_surface_ = true;
+  }
+  virtual void WillCommit() OVERRIDE {}
+  virtual void DidCommit() OVERRIDE { did_commit_ = true; }
+  virtual void DidCommitAndDrawFrame() OVERRIDE {
+    did_commit_and_draw_frame_ = true;
+  }
+  virtual void DidCompleteSwapBuffers() OVERRIDE {}
+
+  // LayerTreeHostSingleThreadClient overrides.
+  virtual void ScheduleComposite() OVERRIDE {}
+  virtual void ScheduleAnimation() OVERRIDE {}
+  virtual void DidPostSwapBuffers() OVERRIDE {}
+  virtual void DidAbortSwapBuffers() OVERRIDE {}
+
+  void RunTest() {
+    no_loop_thread_.Start();
+    no_loop_thread_.Join();
+  }
+
+  // base::DelegateSimpleThread::Delegate override.
+  virtual void Run() OVERRIDE {
+    ASSERT_FALSE(base::MessageLoopProxy::current());
+    RunTestWithoutMessageLoop();
+    EXPECT_FALSE(base::MessageLoopProxy::current());
+  }
+
+ protected:
+  virtual void RunTestWithoutMessageLoop() = 0;
+
+  void SetupLayerTreeHost() {
+    LayerTreeSettings settings;
+    layer_tree_host_ =
+        LayerTreeHost::CreateSingleThreaded(this, this, NULL, settings);
+    layer_tree_host_->SetViewportSize(size_);
+    layer_tree_host_->SetRootLayer(root_layer_);
+  }
+
+  void Composite() {
+    did_commit_ = false;
+    did_commit_and_draw_frame_ = false;
+    layer_tree_host_->Composite(gfx::FrameTime::Now());
+    EXPECT_TRUE(did_initialize_output_surface_);
+    EXPECT_TRUE(did_commit_);
+    EXPECT_TRUE(did_commit_and_draw_frame_);
+  }
+
+  void TearDownLayerTreeHost() {
+    // Explicit teardown to make failures easier to debug.
+    layer_tree_host_.reset();
+    root_layer_ = NULL;
+  }
+
+  // All protected member variables are accessed only on |no_loop_thread_|.
+  scoped_ptr<LayerTreeHost> layer_tree_host_;
+  scoped_refptr<Layer> root_layer_;
+
+  bool did_initialize_output_surface_;
+  bool did_commit_;
+  bool did_commit_and_draw_frame_;
+  gfx::Size size_;
+
+ private:
+  base::DelegateSimpleThread no_loop_thread_;
+};
+
+class LayerTreeHostNoMessageLoopSmokeTest
+    : public LayerTreeHostNoMessageLoopTest {
+ protected:
+  virtual void RunTestWithoutMessageLoop() OVERRIDE {
+    gfx::Size size(100, 100);
+
+    // Set up root layer.
+    {
+      scoped_refptr<SolidColorLayer> solid_color_layer =
+          SolidColorLayer::Create();
+      solid_color_layer->SetBackgroundColor(SK_ColorRED);
+      solid_color_layer->SetBounds(size_);
+      solid_color_layer->SetIsDrawable(true);
+      root_layer_ = solid_color_layer;
+    }
+
+    SetupLayerTreeHost();
+    Composite();
+    TearDownLayerTreeHost();
+  }
+};
+
+TEST_F(LayerTreeHostNoMessageLoopSmokeTest, SmokeTest) {
+  RunTest();
+}
+
+class LayerTreeHostNoMessageLoopDelegatedLayer
+    : public LayerTreeHostNoMessageLoopTest,
+      public DelegatedFrameResourceCollectionClient {
+ protected:
+  virtual void RunTestWithoutMessageLoop() OVERRIDE {
+    resource_collection_ = new DelegatedFrameResourceCollection;
+    frame_provider_ = new DelegatedFrameProvider(
+        resource_collection_.get(), CreateFrameDataWithResource(998));
+
+    root_layer_ = Layer::Create();
+    delegated_layer_ = FakeDelegatedRendererLayer::Create(frame_provider_);
+    delegated_layer_->SetBounds(size_);
+    delegated_layer_->SetIsDrawable(true);
+    root_layer_->AddChild(delegated_layer_);
+
+    SetupLayerTreeHost();
+
+    // Draw first frame.
+    Composite();
+
+    // Prepare and draw second frame.
+    frame_provider_->SetFrameData(CreateFrameDataWithResource(999));
+    Composite();
+
+    // Resource from first frame should be returned.
+    CheckReturnedResource(1u);
+
+    TearDownLayerTreeHost();
+    delegated_layer_ = NULL;
+    frame_provider_ = NULL;
+
+    // Resource from second frame should be returned.
+    CheckReturnedResource(1u);
+    resource_collection_ = NULL;
+  }
+
+  // DelegatedFrameResourceCollectionClient overrides.
+  virtual void UnusedResourcesAreAvailable() OVERRIDE {}
+
+ private:
+  scoped_ptr<DelegatedFrameData> CreateFrameDataWithResource(
+      ResourceProvider::ResourceId resource_id) {
+    scoped_ptr<DelegatedFrameData> frame(new DelegatedFrameData);
+    gfx::Rect frame_rect(size_);
+
+    scoped_ptr<RenderPass> root_pass(RenderPass::Create());
+    root_pass->SetNew(
+        RenderPass::Id(1, 1), frame_rect, frame_rect, gfx::Transform());
+    frame->render_pass_list.push_back(root_pass.Pass());
+
+    TransferableResource resource;
+    resource.id = resource_id;
+    resource.mailbox_holder.texture_target = GL_TEXTURE_2D;
+    resource.mailbox_holder.mailbox = gpu::Mailbox::Generate();
+    frame->resource_list.push_back(resource);
+
+    return frame.Pass();
+  }
+
+  void CheckReturnedResource(size_t expected_num) {
+    ReturnedResourceArray returned_resources;
+    resource_collection_->TakeUnusedResourcesForChildCompositor(
+        &returned_resources);
+    EXPECT_EQ(expected_num, returned_resources.size());
+  }
+
+  scoped_refptr<DelegatedFrameResourceCollection> resource_collection_;
+  scoped_refptr<DelegatedFrameProvider> frame_provider_;
+  scoped_refptr<DelegatedRendererLayer> delegated_layer_;
+};
+
+TEST_F(LayerTreeHostNoMessageLoopDelegatedLayer, SingleDelegatedLayer) {
+  RunTest();
+}
+
+}  // namespace
+}  // namespace cc