Adds AnimationContainer, which can be used to group a set of

app/animation_container_unittest.cc

+// Copyright (c) 2010 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 "app/animation.h"
+#include "app/animation_container.h"
+#include "app/test_animation_delegate.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::AtLeast;
+
+namespace {
+
+class MockObserver : public AnimationContainer::Observer {
+ public:
+  MockObserver() {}
+
+  MOCK_METHOD1(AnimationContainerProgressed, void(AnimationContainer*));
+  MOCK_METHOD1(AnimationContainerEmpty, void(AnimationContainer*));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockObserver);
+};
+
+class TestAnimation : public Animation {
+ public:
+  TestAnimation(AnimationDelegate* delegate)
+      : Animation(20, 20, delegate) {
+  }
+
+  virtual void AnimateToState(double state) {
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestAnimation);
+};
+
+}  // namespace
+
+class AnimationContainerTest: public testing::Test {
+ private:
+  MessageLoopForUI message_loop_;
+};
+
+// Makes sure the animation ups the ref count of the container and releases it
+// appropriately.
+TEST_F(AnimationContainerTest, Ownership) {
+  TestAnimationDelegate delegate;
+  scoped_refptr<AnimationContainer> container(new AnimationContainer());
+  scoped_ptr<Animation> animation(new TestAnimation(&delegate));
+  animation->SetContainer(container.get());
+  // Setting the container should up the ref count.
+  EXPECT_FALSE(container->HasOneRef());
+
+  animation.reset();
+
+  // Releasing the animation should decrement the ref count.
+  EXPECT_TRUE(container->HasOneRef());
+}
+
+// Makes sure multiple animations are managed correctly.
+TEST_F(AnimationContainerTest, Multi) {
+  TestAnimationDelegate delegate1;
+  TestAnimationDelegate delegate2;
+
+  scoped_refptr<AnimationContainer> container(new AnimationContainer());
+  TestAnimation animation1(&delegate1);
+  TestAnimation animation2(&delegate2);
+  animation1.SetContainer(container.get());
+  animation2.SetContainer(container.get());
+
+  // Start both animations.
+  animation1.Start();
+  EXPECT_TRUE(container->is_running());
+  animation2.Start();
+  EXPECT_TRUE(container->is_running());
+
+  // Run the message loop the delegate quits the message loop when notified.
+  MessageLoop::current()->Run();
+
+  // Both timers should have finished.
+  EXPECT_TRUE(delegate1.finished());
+  EXPECT_TRUE(delegate2.finished());
+
+  // And the container should no longer be runnings.
+  EXPECT_FALSE(container->is_running());
+}
+
+// Makes sure observer is notified appropriately.
+TEST_F(AnimationContainerTest, Observer) {
+  MockObserver observer;
+  TestAnimationDelegate delegate1;
+
+  scoped_refptr<AnimationContainer> container(new AnimationContainer());
+  container->set_observer(&observer);
+  TestAnimation animation1(&delegate1);
+  animation1.SetContainer(container.get());
+
+  // We expect to get these two calls: the animation progressed, and then when
+  // the animation completed the container went empty.
+  EXPECT_CALL(observer, AnimationContainerProgressed(container.get())).Times(
+      AtLeast(1));
+  EXPECT_CALL(observer, AnimationContainerEmpty(container.get())).Times(1);
+
+  // Start the animation.
+  animation1.Start();
+  EXPECT_TRUE(container->is_running());
+
+  // Run the message loop the delegate quits the message loop when notified.
+  MessageLoop::current()->Run();
+
+  // The timer should have finished.
+  EXPECT_TRUE(delegate1.finished());
+
+  // And the container should no longer be runnings.
+  EXPECT_FALSE(container->is_running());
+
+  container->set_observer(NULL);
+}