Add ink drop ripple to shelf overflow button

ash/shelf/shelf_view_unittest.cc

Index: ash/shelf/shelf_view_unittest.cc
diff --git a/ash/shelf/shelf_view_unittest.cc b/ash/shelf/shelf_view_unittest.cc
index 8f932350bb1ba62e9bf03a19bfcd8b45c8c7aec5..cea674bc7875b9939514d6868a53332f48203330 100644
--- a/ash/shelf/shelf_view_unittest.cc
+++ b/ash/shelf/shelf_view_unittest.cc
@@ -12,6 +12,7 @@
 #include "ash/common/shelf/app_list_button.h"
 #include "ash/common/shelf/overflow_bubble.h"
 #include "ash/common/shelf/overflow_bubble_view.h"
+#include "ash/common/shelf/overflow_button.h"
 #include "ash/common/shelf/shelf_button.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/shelf_menu_model.h"
@@ -43,6 +44,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/histogram_tester.h"
+#include "base/test/test_mock_time_task_runner.h"
 #include "base/test/user_action_tester.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
@@ -671,6 +673,7 @@ class ShelfViewTest : public AshTestBase {
       EXPECT_EQ(second_last_visible_item_id_in_overflow,
                 GetItemId(test_api_for_overflow.GetLastVisibleIndex()));
     }
+    test_api_->HideOverflowBubble();
   }
 
   // Returns the item's ShelfID at |index|.
@@ -2129,8 +2132,10 @@ class ShelfViewInkDropTest : public ShelfViewTest {
   ~ShelfViewInkDropTest() override {}
 
   void SetUp() override {
-    shell_delegate_ = new TestAppListShellDelegate;
-    ash_test_helper()->set_test_shell_delegate(shell_delegate_);
+    if (!ash_test_helper()->test_shell_delegate()) {

[James Cook, 2016/09/12 02:54:47]

This is odd. I see from the discussion that a subclass might set a delegate. It
might be better to have a virtual SetShellDelegate() or CreateShellDelegate()
function that the subclass can override, or have the subclass just not call this
base method (and call ShelfViewTest directly). Either way, the function needs a
comment.

[mohsen, 2016/09/14 18:34:42]

Done.

+      shell_delegate_ = new TestAppListShellDelegate;
+      ash_test_helper()->set_test_shell_delegate(shell_delegate_);
+    }
 
     set_material_mode(ash::MaterialDesignController::MATERIAL_EXPERIMENTAL);
 
@@ -2158,6 +2163,7 @@ class ShelfViewInkDropTest : public ShelfViewTest {
   }
 
   void ShowAppList() {
+    DCHECK(shelf_delegate_);
     shell_delegate_->app_list_presenter()->Show(0);
     // Similar to real AppListPresenter, notify button that the app list is
     // shown.
@@ -2165,6 +2171,7 @@ class ShelfViewInkDropTest : public ShelfViewTest {
   }
 
   void DismissAppList() {
+    DCHECK(shelf_delegate_);
     shell_delegate_->app_list_presenter()->Dismiss();
     // Similar to real AppListPresenter, notify button that the app list is
     // dismissed.
@@ -2172,6 +2179,7 @@ class ShelfViewInkDropTest : public ShelfViewTest {
   }
 
   void FinishAppListVisibilityChange() {
+    DCHECK(shelf_delegate_);
     shell_delegate_->app_list_presenter()->FinishVisibilityChange();
   }
 
@@ -2573,5 +2581,625 @@ TEST_F(ShelfViewInkDropTest, ShelfButtonWithMenuPressRelease) {
                           views::InkDropState::DEACTIVATED));
 }
 
+namespace {
+
+// An empty menu model for shell context menu just to have a menu.
+class TestShellMenuModel : public ui::SimpleMenuModel,
+                           public ui::SimpleMenuModel::Delegate {
+ public:
+  TestShellMenuModel() : ui::SimpleMenuModel(this) {}
+  ~TestShellMenuModel() override {}
+
+ private:
+  // ui::SimpleMenuModel::Delegate:
+  bool IsCommandIdChecked(int command_id) const override { return false; }
+  bool IsCommandIdEnabled(int command_id) const override { return true; }
+  void ExecuteCommand(int command_id, int event_flags) override {}
+
+  DISALLOW_COPY_AND_ASSIGN(TestShellMenuModel);
+};
+
+// A test ShellDelegate implementation for overflow button tests that returns a
+// TestShelfMenuModel for the shell context menu.
+class TestOverflowButtonShellDelegate : public TestShellDelegate {
+ public:
+  TestOverflowButtonShellDelegate() {}
+  ~TestOverflowButtonShellDelegate() override {}
+
+  // TestShellDelegate:
+  ui::MenuModel* CreateContextMenu(WmShelf* wm_shelf,
+                                   const ShelfItem* item) override {
+    // Caller takes ownership of the returned object.
+    return new TestShellMenuModel;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestOverflowButtonShellDelegate);
+};
+
+// A scoped wrapper around TestMockTimeTaskRunner that replaces message loop's
+// task runner with a TestMockTimeTaskRunner and resets it back at the end of
+// the scope.
+class ScopedMockTaskRunnerWrapper {
+ public:
+  ScopedMockTaskRunnerWrapper() {
+    mock_task_runner_ = new base::TestMockTimeTaskRunner;
+    previous_task_runner_ = base::MessageLoop::current()->task_runner();
+    base::MessageLoop::current()->SetTaskRunner(mock_task_runner_);
+  }
+
+  ~ScopedMockTaskRunnerWrapper() {
+    DCHECK_EQ(mock_task_runner_, base::MessageLoop::current()->task_runner());
+    mock_task_runner_->ClearPendingTasks();
+    base::MessageLoop::current()->SetTaskRunner(previous_task_runner_);
+  }
+
+  void FastForwardUntilNoTasksRemain() {
+    mock_task_runner_->FastForwardUntilNoTasksRemain();
+  }
+
+ private:
+  scoped_refptr<base::TestMockTimeTaskRunner> mock_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> previous_task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedMockTaskRunnerWrapper);
+};
+
+}  // namespace
+
+// Test fixture for testing material design ink drop on overflow button.
+class OverflowButtonInkDropTest : public ShelfViewInkDropTest {
+ public:
+  OverflowButtonInkDropTest() {}
+  ~OverflowButtonInkDropTest() override {}
+
+  void SetUp() override {
+    // Shell takes ownership of the test shell delegate.
+    ash_test_helper()->set_test_shell_delegate(
+        new TestOverflowButtonShellDelegate);
+
+    ShelfViewInkDropTest::SetUp();
+
+    InitOverflowButtonInkDrop();
+
+    AddButtonsUntilOverflow();
+    EXPECT_TRUE(test_api_->IsOverflowButtonVisible());
+    EXPECT_FALSE(test_api_->overflow_bubble() &&

[James Cook, 2016/09/12 02:54:47]

this is odd. I think you should ASSERT_TRUE(test_api_->overflow_bubble()) since
you expect it to exist, then EXPECT_FALSE() is showing.

[mohsen, 2016/09/14 18:34:43]

I think overflow_bubble is not necessarily existing here. The ShelfView itself
uses a similar expression to check if a bubble is showing or not. Maybe, I
should just add an IsShowingOverflowBubble() to the test api that delegates to
the one defined in the ShelfView itself. Done.

+                 test_api_->overflow_bubble()->IsShowing());
+  }
+
+ protected:
+  gfx::Point GetScreenPointInsideOverflowButton() const {
+    return overflow_button_->GetBoundsInScreen().CenterPoint();
+  }
+
+  gfx::Point GetScreenPointOutsideOverflowButton() const {
+    gfx::Point point = GetScreenPointInsideOverflowButton();
+    point.Offset(overflow_button_->width(), 0);
+    return point;
+  }
+
+  OverflowButton* overflow_button_ = nullptr;
+  InkDropSpy* overflow_button_ink_drop_ = nullptr;
+
+ private:
+  void InitOverflowButtonInkDrop() {

[James Cook, 2016/09/12 02:54:47]

nit: I think it would be clearer to just inline this in SetUp() above,
especially since it initializes a member variable.

[mohsen, 2016/09/14 18:34:42]

Done.

+    overflow_button_ = test_api_->overflow_button();
+
+    views::InkDropImpl* ink_drop_impl =
+        new views::InkDropImpl(overflow_button_);
+    overflow_button_ink_drop_ = new InkDropSpy(base::WrapUnique(ink_drop_impl));

[James Cook, 2016/09/12 02:54:47]

nit: either base::MakeUnique<>, or inline the call to new inside WrapUnique().
Otherwise I have to think about ownership transfers. :-)

[mohsen, 2016/09/14 18:34:43]

Not sure what you exactly mean. I updated these lines to make ownerships more
clear (also in two other similar places). Does that address your concerns?

[James Cook, 2016/09/14 21:50:05]

Yes. MakeUnique<Foo> makes me happy. WrapUnique(new Foo) with the "new" inside
the () also makes me happy. "new" on a separate line makes me think too much.
:-)

+    views::test::InkDropHostViewTestApi(overflow_button_)
+        .SetInkDrop(base::WrapUnique(overflow_button_ink_drop_));
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(OverflowButtonInkDropTest);
+};
+
+// Tests ink drop state transitions for the overflow button when the overflow
+// bubble is shown or hidden.
+TEST_F(OverflowButtonInkDropTest, OnOverflowBubbleShowHide) {
+  test_api_->ShowOverflowBubble();
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTIVATED));
+
+  test_api_->HideOverflowBubble();
+  EXPECT_FALSE(test_api_->overflow_bubble() &&

[James Cook, 2016/09/12 02:54:47]

I don't think you need the part before the &&. If it's important, ASSERT it
separately. Otherwise skip it.

[mohsen, 2016/09/14 18:34:43]

Fixed.

+               test_api_->overflow_bubble()->IsShowing());
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::DEACTIVATED));
+}
+
+// Tests ink drop state transitions for the overflow button when the user clicks
+// on it.
+TEST_F(OverflowButtonInkDropTest, MouseActivate) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  gfx::Point mouse_location = GetScreenPointInsideOverflowButton();
+  generator.MoveMouseTo(mouse_location);
+
+  generator.PressLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.ReleaseLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTIVATED));
+
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when the user
+// presses left mouse button on it and drags it out of the button bounds.
+TEST_F(OverflowButtonInkDropTest, MouseDragOut) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.MoveMouseTo(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::HIDDEN));
+
+  generator.ReleaseLeftButton();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&

[James Cook, 2016/09/12 02:54:47]

ditto

[mohsen, 2016/09/14 18:34:43]

Fixed.

+               test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when the user
+// presses left mouse button on it and drags it out of the button bounds and
+// back.
+TEST_F(OverflowButtonInkDropTest, MouseDragOutAndBack) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.MoveMouseTo(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::HIDDEN));
+
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());

[James Cook, 2016/09/12 02:54:47]

btw, I like how you used GetScreenPointInside and Outside. It's easy to read.

[mohsen, 2016/09/14 18:34:42]

Thanks :-)

+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.ReleaseLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTIVATED));
+
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when the user right
+// clicks on the button to show the context menu.
+TEST_F(OverflowButtonInkDropTest, MouseContextMenu) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressRightButton();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseRightButton();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&

[James Cook, 2016/09/12 02:54:47]

ditto

[mohsen, 2016/09/14 18:34:43]

Fixed.

+               test_api_->overflow_bubble()->IsShowing());
+}
+
+#if !defined(OS_WIN)
+// There is no ink drop effect for gesture events on Windows.

[James Cook, 2016/09/12 02:54:47]

nit: move comment above #if

[mohsen, 2016/09/14 18:34:42]

Done. Also in other similar places in this file.

+
+// Tests ink drop state transitions for the overflow button when the user taps
+// on it.
+TEST_F(OverflowButtonInkDropTest, TouchActivate) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  generator.PressTouch();
+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.ReleaseTouch();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTIVATED));
+
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when the user taps
+// down on it and drags it out of the button bounds.
+TEST_F(OverflowButtonInkDropTest, TouchDragOut) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  generator.PressTouch();
+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.MoveTouch(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::HIDDEN));
+
+  generator.ReleaseTouch();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&

[James Cook, 2016/09/12 02:54:47]

ditto

[mohsen, 2016/09/14 18:34:43]

Fixed.

+               test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when the user taps
+// down on it and drags it out of the button bounds and back.
+TEST_F(OverflowButtonInkDropTest, TouchDragOutAndBack) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  generator.PressTouch();
+  EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::ACTION_PENDING));
+
+  generator.MoveTouch(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::HIDDEN));
+
+  generator.MoveTouch(GetScreenPointInsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseTouch();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&

[James Cook, 2016/09/12 02:54:47]

ditto and below

[mohsen, 2016/09/14 18:34:43]

Fixed.

+               test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when the user long
+// presses on the button to show the context menu.
+TEST_F(OverflowButtonInkDropTest, TouchContextMenu) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  {
+    RunAllPendingInMessageLoop();

[James Cook, 2016/09/12 02:54:47]

super nit: Move this above { so the first line has the ScopedFoo, which makes it
super obvious why you opened a new scope.

[mohsen, 2016/09/14 18:34:43]

Right. Done.

+    ScopedMockTaskRunnerWrapper mock_task_runner;
+
+    generator.PressTouch();
+    EXPECT_EQ(views::InkDropState::ACTION_PENDING,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                ElementsAre(views::InkDropState::ACTION_PENDING));
+
+    mock_task_runner.FastForwardUntilNoTasksRemain();
+    EXPECT_EQ(views::InkDropState::HIDDEN,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                ElementsAre(views::InkDropState::ALTERNATE_ACTION_PENDING,
+                            views::InkDropState::HIDDEN));
+
+    generator.ReleaseTouch();
+    EXPECT_EQ(views::InkDropState::HIDDEN,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                IsEmpty());
+
+    EXPECT_FALSE(test_api_->overflow_bubble() &&
+                 test_api_->overflow_bubble()->IsShowing());
+  }
+}
+
+#endif  // !defined(OS_WIN)
+
+// Test fixture for testing material design ink drop on overflow button when it
+// is active.
+class OverflowButtonActiveInkDropTest : public OverflowButtonInkDropTest {
+ public:
+  OverflowButtonActiveInkDropTest() {}
+  ~OverflowButtonActiveInkDropTest() override {}
+
+  void SetUp() override {
+    OverflowButtonInkDropTest::SetUp();
+
+    test_api_->ShowOverflowBubble();
+    ASSERT_TRUE(test_api_->overflow_bubble());
+    EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+    EXPECT_EQ(views::InkDropState::ACTIVATED,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                ElementsAre(views::InkDropState::ACTIVATED));
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(OverflowButtonActiveInkDropTest);
+};
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user clicks on it.
+TEST_F(OverflowButtonActiveInkDropTest, MouseDeactivate) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseLeftButton();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::DEACTIVATED));
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&
+               test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user presses left mouse button on it and drags it out of the button
+// bounds.
+TEST_F(OverflowButtonActiveInkDropTest, MouseDragOut) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.MoveMouseTo(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user presses left mouse button on it and drags it out of the button
+// bounds and back.
+TEST_F(OverflowButtonActiveInkDropTest, MouseDragOutAndBack) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressLeftButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.MoveMouseTo(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseLeftButton();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::DEACTIVATED));
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&
+               test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user right clicks on the button to show the context menu.
+TEST_F(OverflowButtonActiveInkDropTest, MouseContextMenu) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.MoveMouseTo(GetScreenPointInsideOverflowButton());
+
+  generator.PressRightButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseRightButton();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+#if !defined(OS_WIN)
+// There is no ink drop effect for gesture events on Windows.

[James Cook, 2016/09/12 02:54:47]

ditto

[mohsen, 2016/09/14 18:34:43]

Done.

+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user taps on it.
+TEST_F(OverflowButtonActiveInkDropTest, TouchDeactivate) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  generator.PressTouch();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseTouch();
+  EXPECT_EQ(views::InkDropState::HIDDEN,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              ElementsAre(views::InkDropState::DEACTIVATED,
+                          views::InkDropState::HIDDEN));
+
+  EXPECT_FALSE(test_api_->overflow_bubble() &&
+               test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user taps down on it and drags it out of the button bounds.
+TEST_F(OverflowButtonActiveInkDropTest, TouchDragOut) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  generator.PressTouch();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.MoveTouch(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseTouch();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  ASSERT_TRUE(test_api_->overflow_bubble());

[James Cook, 2016/09/12 02:54:47]

having seen many of these lines, it might be easier to read if you just left
them out. If the test crashes it'll be pretty obvious which pointer is null.

[mohsen, 2016/09/14 18:34:42]

Fixed.

+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user taps down on it and drags it out of the button bounds and back.
+TEST_F(OverflowButtonActiveInkDropTest, TouchDragOutAndBack) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  generator.PressTouch();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.MoveTouch(GetScreenPointOutsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.MoveTouch(GetScreenPointInsideOverflowButton());
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  generator.ReleaseTouch();
+  EXPECT_EQ(views::InkDropState::ACTIVATED,
+            overflow_button_ink_drop_->GetTargetInkDropState());
+  EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+              IsEmpty());
+
+  ASSERT_TRUE(test_api_->overflow_bubble());
+  EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+}
+
+// Tests ink drop state transitions for the overflow button when it is active
+// and the user long presses on the button to show the context menu.
+TEST_F(OverflowButtonActiveInkDropTest, TouchContextMenu) {
+  ui::test::EventGenerator& generator = GetEventGenerator();
+  generator.set_current_location(GetScreenPointInsideOverflowButton());
+
+  {
+    RunAllPendingInMessageLoop();
+    ScopedMockTaskRunnerWrapper mock_task_runner;
+
+    generator.PressTouch();
+    EXPECT_EQ(views::InkDropState::ACTIVATED,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                IsEmpty());
+
+    mock_task_runner.FastForwardUntilNoTasksRemain();
+    EXPECT_EQ(views::InkDropState::ACTIVATED,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                IsEmpty());
+
+    generator.ReleaseTouch();
+    EXPECT_EQ(views::InkDropState::ACTIVATED,
+              overflow_button_ink_drop_->GetTargetInkDropState());
+    EXPECT_THAT(overflow_button_ink_drop_->GetAndResetRequestedStates(),
+                IsEmpty());
+
+    ASSERT_TRUE(test_api_->overflow_bubble());
+    EXPECT_TRUE(test_api_->overflow_bubble()->IsShowing());
+  }
+}
+
+#endif  // !defined(OS_WIN)

[James Cook, 2016/09/12 02:54:47]

Very thorough tests.

[mohsen, 2016/09/14 18:34:42]

Thanks :-)

+
 }  // namespace test
 }  // namespace ash