alternate ntp: toolbar background and separator animation

chrome/browser/ui/search/toolbar_search_animator_unittest.cc

+// Copyright (c) 2012 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/command_line.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
+#include "chrome/browser/ui/search/search_delegate.h"
+#include "chrome/browser/ui/search/search_model.h"
+#include "chrome/browser/ui/search/search_tab_helper.h"
+#include "chrome/browser/ui/search/toolbar_search_animator.h"
+#include "chrome/browser/ui/search/toolbar_search_animator_observer.h"
+#include "chrome/browser/ui/tab_contents/tab_contents.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/base/browser_with_test_window_test.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/animation/multi_animation.h"
+
+using ::testing::AtLeast;
+
+namespace chrome {
+namespace search {
+
+namespace {
+
+class MockObserver : public ToolbarSearchAnimatorObserver {
+ public:
+  MockObserver() {}
+
+  MOCK_METHOD0(OnToolbarBackgroundAnimatorProgressed, void());
+  MOCK_METHOD1(OnToolbarBackgroundAnimatorCanceled, void(TabContents*));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockObserver);
+};
+
+}  // namespace
+
+class ToolbarSearchAnimatorTestObserver : public ToolbarSearchAnimatorObserver {
+ public:
+  explicit ToolbarSearchAnimatorTestObserver(ToolbarSearchAnimator* animator)
+      : animator_(animator),
+        cancel_halfway_(false) {
+  }
+
+  virtual void OnToolbarBackgroundAnimatorProgressed() OVERRIDE {
+    if (cancel_halfway_ &&
+        animator_->background_animation_->GetCurrentValue() > 0.5) {
+      MessageLoop::current()->Quit();
+      return;
+    }
+    QuitMessageLoopIfDone();
+  }
+
+  virtual void OnToolbarBackgroundAnimatorCanceled(
+      TabContents* tab_contents) OVERRIDE {
+    if (!cancel_halfway_)
+      QuitMessageLoopIfDone();
+  }
+
+  void set_cancel_halfway(bool cancel) {
+    cancel_halfway_ = cancel;
+  }
+
+ private:
+  void QuitMessageLoopIfDone() {
+    if (!animator_->background_animation_->is_animating())
+      MessageLoop::current()->Quit();
+  }
+
+  ToolbarSearchAnimator* animator_;
+
+  bool cancel_halfway_;
+
+  DISALLOW_COPY_AND_ASSIGN(ToolbarSearchAnimatorTestObserver);
+};
+
+class ToolbarSearchAnimatorTest : public BrowserWithTestWindowTest {
+ protected:
+  ToolbarSearchAnimatorTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    CommandLine* command_line = CommandLine::ForCurrentProcess();
+    command_line->AppendSwitch(switches::kEnableInstantExtendedAPI);
+
+    BrowserWithTestWindowTest::SetUp();
+
+    animator().InitBackgroundAnimation(0, 0);
+
+    AddTab(browser(), GURL("http://foo/0"));
+    default_observer_.reset(new ToolbarSearchAnimatorTestObserver(&animator()));
+    animator().AddObserver(default_observer_.get());
+  }
+
+  virtual void TearDown() OVERRIDE {
+    RemoveDefaultObserver();
+    BrowserWithTestWindowTest::TearDown();
+  }
+
+  void RemoveDefaultObserver() {
+    if (default_observer_.get()) {
+      animator().RemoveObserver(default_observer_.get());
+      default_observer_.reset(NULL);
+    }
+  }
+
+  void SetMode(const Mode::Type mode, bool animate) {
+    TabContents* contents = chrome::GetTabContentsAt(browser(), 0);
+    contents->search_tab_helper()->model()->SetMode(Mode(mode, animate));
+  }
+
+  void RunMessageLoop(bool cancel_halfway) {
+    // Run the message loop.  ToolbarSearchAnimatorTestObserver quits the
+    // message loop when all animations have stopped.
+    if (default_observer_.get())
+      default_observer_->set_cancel_halfway(cancel_halfway);
+    message_loop()->Run();
+  }
+
+  ToolbarSearchAnimator& animator() {
+    return browser()->search_delegate()->toolbar_search_animator();
+  }
+
+  ui::MultiAnimation* background_animation() {
+    return animator().background_animation_.get();
+  }
+
+  double GetGradientOpacity() const {
+    return browser()->search_delegate()->toolbar_search_animator().
+        GetGradientOpacity();
+  }
+
+  bool IsBackgroundChanging() {
+    return animator().background_animation_->is_animating();
+  }
+
+ private:
+  scoped_ptr<ToolbarSearchAnimatorTestObserver> default_observer_;
+
+  DISALLOW_COPY_AND_ASSIGN(ToolbarSearchAnimatorTest);
+};
+
+TEST_F(ToolbarSearchAnimatorTest, StateWithoutAnimation) {
+  SetMode(Mode::MODE_NTP, false);
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(0.0f, GetGradientOpacity());
+
+  SetMode(Mode::MODE_SEARCH, false);
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+
+  SetMode(Mode::MODE_DEFAULT, false);
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+
+  SetMode(Mode::MODE_SEARCH, false);
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+
+  SetMode(Mode::MODE_NTP, false);
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(0.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, NTPToSearch) {
+  SetMode(Mode::MODE_NTP, false);
+  // Set mode to |SEARCH| to start background change animation.
+  SetMode(Mode::MODE_SEARCH, true);
+
+  // Verify the opacity before letting animation run in message loop.
+  EXPECT_EQ(0.0f, GetGradientOpacity());
+
+  EXPECT_TRUE(IsBackgroundChanging());
+
+  RunMessageLoop(false);
+
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, SearchToNTP) {
+  SetMode(Mode::MODE_SEARCH, false);
+  SetMode(Mode::MODE_NTP, true);
+
+  // TODO(kuan): check with UX folks if we should animate from gradient to flat
+  // background.
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(0.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, SearchToDefault) {
+  SetMode(Mode::MODE_SEARCH, false);
+  SetMode(Mode::MODE_DEFAULT, true);
+
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, DefaultToSearch) {
+  // chrome::search::Mode is initialized to |DEFAULT|.
+  SetMode(Mode::MODE_SEARCH, true);
+
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, NTPToDefault) {
+  SetMode(Mode::MODE_NTP, false);
+  SetMode(Mode::MODE_DEFAULT, true);
+
+  // TODO(kuan): check with UX folks if we should animate from flat to
+  // gradient background.
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(1.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, DefaultToNTP) {
+  // chrome::search::Mode is initialized to |DEFAULT|.
+  SetMode(Mode::MODE_NTP, true);
+
+  // TODO(kuan): check with UX folks if we should animate from gradient to flat
+  // background.
+  EXPECT_FALSE(IsBackgroundChanging());
+  EXPECT_EQ(0.0f, GetGradientOpacity());
+}
+
+TEST_F(ToolbarSearchAnimatorTest, Observer) {
+  MockObserver observer;
+  animator().AddObserver(&observer);
+
+  // OnToolbarBackgroundAnimatorProgressed is expected to be called at least
+  // once - when animation ends, more if animation duration is > 0;
+  // We've set animation duration to 0 for testing, so we only check for at
+  // least once.
+  EXPECT_CALL(observer, OnToolbarBackgroundAnimatorProgressed()).
+      Times(AtLeast(1));
+  EXPECT_CALL(observer, OnToolbarBackgroundAnimatorCanceled(NULL)).Times(0);
+
+  SetMode(Mode::MODE_NTP, false);
+  SetMode(Mode::MODE_SEARCH, true);
+  SetMode(Mode::MODE_DEFAULT, true);
+
+  RunMessageLoop(false);
+
+  animator().RemoveObserver(&observer);
+}
+
+}  // namespace search
+}  // namespace chrome