cc: Add testing stubs for proxy test

cc/trees/layer_tree_host_unittest_proxy.cc

+// 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/basictypes.h"
+#include "base/compiler_specific.h"
+#include "cc/test/layer_tree_test.h"
+#include "cc/trees/thread_proxy.h"
+
+namespace cc {
+
+// Helper class to access private data in ThreadProxy.
+class ThreadProxyTestAPI {

[danakj, 2014/04/24 16:03:15]

You could also make accessors for these on the LayerTreeTest class, and just
make them protected on ThreadProxy and expose them to LayerTreeTest via your
subclass. Then you don't need friends.

[simonhong, 2014/04/25 00:42:35]

Done.

+ public:
+  explicit ThreadProxyTestAPI(ThreadProxy* proxy) : proxy_(proxy) {}
+  virtual ~ThreadProxyTestAPI() {}
+
+  ThreadProxy::MainThreadOnly& main() {

[danakj, 2014/04/24 16:03:15]

const&?

[simonhong, 2014/04/25 00:42:35]

Done.

+    return proxy_->main();
+  }
+
+  ThreadProxy::CompositorThreadOnly& impl() {

[danakj, 2014/04/24 16:03:15]

const&

[simonhong, 2014/04/25 00:42:35]

Done.

+    return proxy_->impl();
+  }
+
+ private:
+  ThreadProxy* proxy_;
+
+  DISALLOW_COPY_AND_ASSIGN(ThreadProxyTestAPI);
+};
+
+class ThreadProxyTest : public LayerTreeTest {
+ public:
+  virtual void WillBeginTest() OVERRIDE {
+    LayerTreeTest::WillBeginTest();
+    test_api_.reset(new ThreadProxyTestAPI(
+        static_cast<ThreadProxy*>(proxy())));
+  }
+
+ protected:
+  scoped_ptr<ThreadProxyTestAPI> test_api_;
+
+  ThreadProxyTest() {}
+  virtual ~ThreadProxyTest() {}
+
+  void RunTest() {
+    // We don't need to care about delegating, impl side painting because
+    // ThreadProxyTest only cover ThreadProxy itself.
+    // So, true is passed to all parameters.
+    bool threaded = true;
+    bool delegating_renderer = true;
+    bool impl_side_painting = true;
+    LayerTreeTest::RunTest(threaded, delegating_renderer, impl_side_painting);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ThreadProxyTest);
+};
+
+class ThreadProxyTestSetNeedsCommit : public ThreadProxyTest {
+ public:
+  void BeginTest() OVERRIDE {
+    EXPECT_FALSE(test_api_->main().commit_requested);
+    EXPECT_FALSE(test_api_->main().commit_request_sent_to_impl_thread);
+
+    proxy()->SetNeedsCommit();
+
+    EXPECT_TRUE(test_api_->main().commit_requested);
+    EXPECT_TRUE(test_api_->main().commit_request_sent_to_impl_thread);
+  }
+
+  void DidBeginMainFrame() OVERRIDE {
+    EXPECT_FALSE(test_api_->main().commit_requested);
+    EXPECT_FALSE(test_api_->main().commit_request_sent_to_impl_thread);
+
+    EndTest();
+  }
+
+  void AfterTest() OVERRIDE {}
+
+ protected:
+  ThreadProxyTestSetNeedsCommit() {}
+  virtual ~ThreadProxyTestSetNeedsCommit() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ThreadProxyTestSetNeedsCommit);
+};
+
+TEST_F(ThreadProxyTestSetNeedsCommit, SetNeedsCommitTest) {
+  RunTest();
+}
+
+}  // namespace cc