import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/base/gtest/TestAccessibleCaretEventHub.cpp

@@ -0,0 +1,827 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+
+#include <iostream>
+#include <string>
+
+#include "AccessibleCaretEventHub.h"
+#include "AccessibleCaretManager.h"
+#include "gfxPrefs.h"
+#include "mozilla/BasicEvents.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/TouchEvents.h"
+
+using ::testing::AtLeast;
+using ::testing::DefaultValue;
+using ::testing::Eq;
+using ::testing::InSequence;
+using ::testing::MockFunction;
+using ::testing::Return;
+using ::testing::_;
+
+// -----------------------------------------------------------------------------
+// This file test the state transitions of AccessibleCaretEventHub under
+// various combination of events and callbacks.
+
+namespace mozilla
+{
+
+class MockAccessibleCaretManager : public AccessibleCaretManager
+{
+public:
+  MockAccessibleCaretManager()
+    : AccessibleCaretManager(nullptr)
+  {
+  }
+
+  MOCK_METHOD2(PressCaret,
+               nsresult(const nsPoint& aPoint, EventClassID aEventClass));
+  MOCK_METHOD1(DragCaret, nsresult(const nsPoint& aPoint));
+  MOCK_METHOD0(ReleaseCaret, nsresult());
+  MOCK_METHOD1(TapCaret, nsresult(const nsPoint& aPoint));
+  MOCK_METHOD1(SelectWordOrShortcut, nsresult(const nsPoint& aPoint));
+  MOCK_METHOD0(OnScrollStart, void());
+  MOCK_METHOD0(OnScrollEnd, void());
+  MOCK_METHOD0(OnScrollPositionChanged, void());
+  MOCK_METHOD0(OnBlur, void());
+};
+
+class MockAccessibleCaretEventHub : public AccessibleCaretEventHub
+{
+public:
+  using AccessibleCaretEventHub::NoActionState;
+  using AccessibleCaretEventHub::PressCaretState;
+  using AccessibleCaretEventHub::DragCaretState;
+  using AccessibleCaretEventHub::PressNoCaretState;
+  using AccessibleCaretEventHub::ScrollState;
+  using AccessibleCaretEventHub::PostScrollState;
+  using AccessibleCaretEventHub::LongTapState;
+  using AccessibleCaretEventHub::FireScrollEnd;
+
+  MockAccessibleCaretEventHub()
+    : AccessibleCaretEventHub(nullptr)
+  {
+    mManager = MakeUnique<MockAccessibleCaretManager>();
+    mInitialized = true;
+  }
+
+  virtual nsPoint GetTouchEventPosition(WidgetTouchEvent* aEvent,
+                                        int32_t aIdentifier) const override
+  {
+    // Return the device point directly.
+    LayoutDeviceIntPoint touchIntPoint = aEvent->mTouches[0]->mRefPoint;
+    return nsPoint(touchIntPoint.x, touchIntPoint.y);
+  }
+
+  virtual nsPoint GetMouseEventPosition(WidgetMouseEvent* aEvent) const override
+  {
+    // Return the device point directly.
+    LayoutDeviceIntPoint mouseIntPoint = aEvent->AsGUIEvent()->mRefPoint;
+    return nsPoint(mouseIntPoint.x, mouseIntPoint.y);
+  }
+
+  MockAccessibleCaretManager* GetMockAccessibleCaretManager()
+  {
+    return static_cast<MockAccessibleCaretManager*>(mManager.get());
+  }
+};
+
+// Print the name of the state for debugging.
+::std::ostream& operator<<(::std::ostream& aOstream,
+                           const MockAccessibleCaretEventHub::State* aState)
+{
+  return aOstream << aState->Name();
+}
+
+class AccessibleCaretEventHubTester : public ::testing::Test
+{
+public:
+  AccessibleCaretEventHubTester()
+  {
+    DefaultValue<nsresult>::Set(NS_OK);
+    EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::NoActionState());
+
+    // AccessibleCaretEventHub requires the caller to hold a ref to it. We just
+    // add ref here for the sake of convenience.
+    mHub.get()->AddRef();
+  }
+
+  ~AccessibleCaretEventHubTester()
+  {
+    // Release the ref added in the constructor.
+    mHub.get()->Release();
+  }
+
+  static UniquePtr<WidgetEvent> CreateMouseEvent(EventMessage aMessage,
+                                                 nscoord aX,
+                                                 nscoord aY)
+  {
+    auto event = MakeUnique<WidgetMouseEvent>(true, aMessage, nullptr,
+                                              WidgetMouseEvent::eReal);
+
+    event->button = WidgetMouseEvent::eLeftButton;
+    event->mRefPoint = LayoutDeviceIntPoint(aX, aY);
+
+    return Move(event);
+  }
+
+  static UniquePtr<WidgetEvent> CreateMousePressEvent(nscoord aX, nscoord aY)
+  {
+    return CreateMouseEvent(eMouseDown, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateMouseMoveEvent(nscoord aX, nscoord aY)
+  {
+    return CreateMouseEvent(eMouseMove, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateMouseReleaseEvent(nscoord aX, nscoord aY)
+  {
+    return CreateMouseEvent(eMouseUp, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateLongTapEvent(nscoord aX, nscoord aY)
+  {
+    return CreateMouseEvent(eMouseLongTap, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateTouchEvent(EventMessage aMessage,
+                                                 nscoord aX,
+                                                 nscoord aY)
+  {
+    auto event = MakeUnique<WidgetTouchEvent>(true, aMessage, nullptr);
+    int32_t identifier = 0;
+    LayoutDeviceIntPoint point(aX, aY);
+    LayoutDeviceIntPoint radius(19, 19);
+    float rotationAngle = 0;
+    float force = 1;
+
+    RefPtr<dom::Touch> touch(
+      new dom::Touch(identifier, point, radius, rotationAngle, force));
+    event->mTouches.AppendElement(touch);
+
+    return Move(event);
+  }
+
+  static UniquePtr<WidgetEvent> CreateTouchStartEvent(nscoord aX, nscoord aY)
+  {
+    return CreateTouchEvent(eTouchStart, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateTouchMoveEvent(nscoord aX, nscoord aY)
+  {
+    return CreateTouchEvent(eTouchMove, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateTouchEndEvent(nscoord aX, nscoord aY)
+  {
+    return CreateTouchEvent(eTouchEnd, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateTouchCancelEvent(nscoord aX, nscoord aY)
+  {
+    return CreateTouchEvent(eTouchCancel, aX, aY);
+  }
+
+  static UniquePtr<WidgetEvent> CreateWheelEvent(EventMessage aMessage)
+  {
+    auto event = MakeUnique<WidgetWheelEvent>(true, aMessage, nullptr);
+
+    return Move(event);
+  }
+
+  void HandleEventAndCheckState(UniquePtr<WidgetEvent> aEvent,
+                                MockAccessibleCaretEventHub::State* aExpectedState,
+                                nsEventStatus aExpectedEventStatus)
+  {
+    nsEventStatus rv = mHub->HandleEvent(aEvent.get());
+    EXPECT_EQ(mHub->GetState(), aExpectedState);
+    EXPECT_EQ(rv, aExpectedEventStatus);
+  }
+
+  void CheckState(MockAccessibleCaretEventHub::State* aExpectedState)
+  {
+    EXPECT_EQ(mHub->GetState(), aExpectedState);
+  }
+
+  template <typename PressEventCreator, typename ReleaseEventCreator>
+  void TestPressReleaseOnNoCaret(PressEventCreator aPressEventCreator,
+                                 ReleaseEventCreator aReleaseEventCreator);
+
+  template <typename PressEventCreator, typename ReleaseEventCreator>
+  void TestPressReleaseOnCaret(PressEventCreator aPressEventCreator,
+                               ReleaseEventCreator aReleaseEventCreator);
+
+  template <typename PressEventCreator, typename MoveEventCreator,
+            typename ReleaseEventCreator>
+  void TestPressMoveReleaseOnNoCaret(PressEventCreator aPressEventCreator,
+                                     MoveEventCreator aMoveEventCreator,
+                                     ReleaseEventCreator aReleaseEventCreator);
+
+  template <typename PressEventCreator, typename MoveEventCreator,
+            typename ReleaseEventCreator>
+  void TestPressMoveReleaseOnCaret(PressEventCreator aPressEventCreator,
+                                   MoveEventCreator aMoveEventCreator,
+                                   ReleaseEventCreator aReleaseEventCreator);
+
+  template <typename PressEventCreator, typename ReleaseEventCreator>
+  void TestLongTapWithSelectWordSuccessful(
+    PressEventCreator aPressEventCreator,
+    ReleaseEventCreator aReleaseEventCreator);
+
+  template <typename PressEventCreator, typename ReleaseEventCreator>
+  void TestLongTapWithSelectWordFailed(
+    PressEventCreator aPressEventCreator,
+    ReleaseEventCreator aReleaseEventCreator);
+
+  template <typename PressEventCreator, typename MoveEventCreator,
+            typename ReleaseEventCreator>
+  void TestEventDrivenAsyncPanZoomScroll(
+    PressEventCreator aPressEventCreator, MoveEventCreator aMoveEventCreator,
+    ReleaseEventCreator aReleaseEventCreator);
+
+  // Member variables
+  RefPtr<MockAccessibleCaretEventHub> mHub{new MockAccessibleCaretEventHub()};
+
+}; // class AccessibleCaretEventHubTester
+
+TEST_F(AccessibleCaretEventHubTester, TestMousePressReleaseOnNoCaret)
+{
+  TestPressReleaseOnNoCaret(CreateMousePressEvent, CreateMouseReleaseEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchPressReleaseOnNoCaret)
+{
+  TestPressReleaseOnNoCaret(CreateTouchStartEvent, CreateTouchEndEvent);
+}
+
+template <typename PressEventCreator, typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestPressReleaseOnNoCaret(
+  PressEventCreator aPressEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+    .WillOnce(Return(NS_ERROR_FAILURE));
+
+  EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), ReleaseCaret()).Times(0);
+
+  EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), TapCaret(_)).Times(0);
+
+  HandleEventAndCheckState(aPressEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(aReleaseEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestMousePressReleaseOnCaret)
+{
+  TestPressReleaseOnCaret(CreateMousePressEvent, CreateMouseReleaseEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchPressReleaseOnCaret)
+{
+  TestPressReleaseOnCaret(CreateTouchStartEvent, CreateTouchEndEvent);
+}
+
+template <typename PressEventCreator, typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestPressReleaseOnCaret(
+  PressEventCreator aPressEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_OK));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), SelectWordOrShortcut(_))
+      .Times(0);
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), ReleaseCaret());
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), TapCaret(_));
+  }
+
+  HandleEventAndCheckState(aPressEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(CreateLongTapEvent(0, 0),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(aReleaseEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eConsumeNoDefault);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestMousePressMoveReleaseOnNoCaret)
+{
+  TestPressMoveReleaseOnNoCaret(CreateMousePressEvent, CreateMouseMoveEvent,
+                                CreateMouseReleaseEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchPressMoveReleaseOnNoCaret)
+{
+  TestPressMoveReleaseOnNoCaret(CreateTouchStartEvent, CreateTouchMoveEvent,
+                                CreateTouchEndEvent);
+}
+
+template <typename PressEventCreator, typename MoveEventCreator,
+          typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestPressMoveReleaseOnNoCaret(
+  PressEventCreator aPressEventCreator, MoveEventCreator aMoveEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  nscoord x0 = 0, y0 = 0;
+  nscoord x1 = 100, y1 = 100;
+  nscoord x2 = 300, y2 = 300;
+  nscoord x3 = 400, y3 = 400;
+
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), DragCaret(_)).Times(0);
+  }
+
+  HandleEventAndCheckState(aPressEventCreator(x0, y0),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  // A small move with the distance between (x0, y0) and (x1, y1) below the
+  // tolerance value.
+  HandleEventAndCheckState(aMoveEventCreator(x1, y1),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  // A large move to simulate a dragging to select text since the distance
+  // between (x0, y0) and (x2, y2) is above the tolerance value.
+  HandleEventAndCheckState(aMoveEventCreator(x2, y2),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(aReleaseEventCreator(x3, y3),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestMousePressMoveReleaseOnCaret)
+{
+  TestPressMoveReleaseOnCaret(CreateMousePressEvent, CreateMouseMoveEvent,
+                              CreateMouseReleaseEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchPressMoveReleaseOnCaret)
+{
+  TestPressMoveReleaseOnCaret(CreateTouchStartEvent, CreateTouchMoveEvent,
+                              CreateTouchEndEvent);
+}
+
+template <typename PressEventCreator, typename MoveEventCreator,
+          typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestPressMoveReleaseOnCaret(
+  PressEventCreator aPressEventCreator, MoveEventCreator aMoveEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  nscoord x0 = 0, y0 = 0;
+  nscoord x1 = 100, y1 = 100;
+  nscoord x2 = 300, y2 = 300;
+  nscoord x3 = 400, y3 = 400;
+
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_OK));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), DragCaret(_))
+      .Times(2) // two valid drag operations
+      .WillRepeatedly(Return(NS_OK));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), ReleaseCaret())
+      .WillOnce(Return(NS_OK));
+  }
+
+  HandleEventAndCheckState(aPressEventCreator(x0, y0),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  // A small move with the distance between (x0, y0) and (x1, y1) below the
+  // tolerance value.
+  HandleEventAndCheckState(aMoveEventCreator(x1, y1),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  // A large move forms a valid drag since the distance between (x0, y0) and
+  // (x2, y2) is above the tolerance value.
+  HandleEventAndCheckState(aMoveEventCreator(x2, y2),
+                           MockAccessibleCaretEventHub::DragCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  // Also a valid drag since the distance between (x0, y0) and (x3, y3) above
+  // the tolerance value even if the distance between (x2, y2) and (x3, y3) is
+  // below the tolerance value.
+  HandleEventAndCheckState(aMoveEventCreator(x3, y3),
+                           MockAccessibleCaretEventHub::DragCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(aReleaseEventCreator(x3, y3),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eConsumeNoDefault);
+}
+
+TEST_F(AccessibleCaretEventHubTester,
+       TestTouchStartMoveEndOnCaretWithTouchCancelIgnored)
+{
+  nscoord x0 = 0, y0 = 0;
+  nscoord x1 = 100, y1 = 100;
+  nscoord x2 = 300, y2 = 300;
+  nscoord x3 = 400, y3 = 400;
+
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_OK));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), DragCaret(_))
+      .WillOnce(Return(NS_OK));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), ReleaseCaret())
+      .WillOnce(Return(NS_OK));
+  }
+
+  // All the eTouchCancel events should be ignored in this test.
+
+  HandleEventAndCheckState(CreateTouchStartEvent(x0, y0),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(CreateTouchCancelEvent(x0, y0),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eIgnore);
+
+  // A small move with the distance between (x0, y0) and (x1, y1) below the
+  // tolerance value.
+  HandleEventAndCheckState(CreateTouchMoveEvent(x1, y1),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(CreateTouchCancelEvent(x1, y1),
+                           MockAccessibleCaretEventHub::PressCaretState(),
+                           nsEventStatus_eIgnore);
+
+  // A large move forms a valid drag since the distance between (x0, y0) and
+  // (x2, y2) is above the tolerance value.
+  HandleEventAndCheckState(CreateTouchMoveEvent(x2, y2),
+                           MockAccessibleCaretEventHub::DragCaretState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(CreateTouchCancelEvent(x2, y2),
+                           MockAccessibleCaretEventHub::DragCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(CreateTouchEndEvent(x3, y3),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eConsumeNoDefault);
+
+  HandleEventAndCheckState(CreateTouchCancelEvent(x3, y3),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);}
+
+TEST_F(AccessibleCaretEventHubTester, TestMouseLongTapWithSelectWordSuccessful)
+{
+  TestLongTapWithSelectWordSuccessful(CreateMousePressEvent,
+                                      CreateMouseReleaseEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchLongTapWithSelectWordSuccessful)
+{
+  TestLongTapWithSelectWordSuccessful(CreateTouchStartEvent,
+                                      CreateTouchEndEvent);
+}
+
+template <typename PressEventCreator, typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestLongTapWithSelectWordSuccessful(
+  PressEventCreator aPressEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  MockFunction<void(::std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), SelectWordOrShortcut(_))
+      .WillOnce(Return(NS_OK));
+
+    EXPECT_CALL(check, Call("longtap with scrolling"));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), SelectWordOrShortcut(_))
+      .WillOnce(Return(NS_OK));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollStart());
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollEnd());
+  }
+
+  // Test long tap without scrolling.
+  HandleEventAndCheckState(aPressEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(CreateLongTapEvent(0, 0),
+                           MockAccessibleCaretEventHub::LongTapState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(aReleaseEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);
+
+  // On Fennec, after long tap, the script might scroll and zoom the input field
+  // to the center of the screen to make typing easier before the user lifts the
+  // finger.
+  check.Call("longtap with scrolling");
+
+  HandleEventAndCheckState(aPressEventCreator(1, 1),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(CreateLongTapEvent(1, 1),
+                           MockAccessibleCaretEventHub::LongTapState(),
+                           nsEventStatus_eIgnore);
+
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->AsyncPanZoomStopped();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::PostScrollState());
+
+  // Simulate scroll end fired by timer.
+  MockAccessibleCaretEventHub::FireScrollEnd(nullptr, mHub);
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::NoActionState());
+
+  HandleEventAndCheckState(aReleaseEventCreator(1, 1),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestMouseLongTapWithSelectWordFailed)
+{
+  TestLongTapWithSelectWordFailed(CreateMousePressEvent,
+                                  CreateMouseReleaseEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchLongTapWithSelectWordFailed)
+{
+  TestLongTapWithSelectWordFailed(CreateTouchStartEvent,
+                                  CreateTouchEndEvent);
+}
+
+template <typename PressEventCreator, typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestLongTapWithSelectWordFailed(
+  PressEventCreator aPressEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), SelectWordOrShortcut(_))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+  }
+
+  HandleEventAndCheckState(aPressEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(CreateLongTapEvent(0, 0),
+                           MockAccessibleCaretEventHub::LongTapState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(aReleaseEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::NoActionState(),
+                           nsEventStatus_eIgnore);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestTouchEventDrivenAsyncPanZoomScroll)
+{
+  TestEventDrivenAsyncPanZoomScroll(CreateTouchStartEvent, CreateTouchMoveEvent,
+                                    CreateTouchEndEvent);
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestMouseEventDrivenAsyncPanZoomScroll)
+{
+  TestEventDrivenAsyncPanZoomScroll(CreateMousePressEvent, CreateMouseMoveEvent,
+                                    CreateMouseReleaseEvent);
+}
+
+template <typename PressEventCreator, typename MoveEventCreator,
+          typename ReleaseEventCreator>
+void
+AccessibleCaretEventHubTester::TestEventDrivenAsyncPanZoomScroll(
+  PressEventCreator aPressEventCreator, MoveEventCreator aMoveEventCreator,
+  ReleaseEventCreator aReleaseEventCreator)
+{
+  MockFunction<void(::std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), DragCaret(_)).Times(0);
+
+    EXPECT_CALL(check, Call("1"));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollStart());
+
+    EXPECT_CALL(check, Call("2"));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollEnd());
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), PressCaret(_, _))
+      .WillOnce(Return(NS_ERROR_FAILURE));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), DragCaret(_)).Times(0);
+
+    EXPECT_CALL(check, Call("3"));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollStart());
+
+    EXPECT_CALL(check, Call("4"));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollEnd());
+  }
+
+  // Receive press event.
+  HandleEventAndCheckState(aPressEventCreator(0, 0),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(aMoveEventCreator(100, 100),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  check.Call("1");
+
+  // Event driven scroll started
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  HandleEventAndCheckState(aMoveEventCreator(160, 160),
+                           MockAccessibleCaretEventHub::ScrollState(),
+                           nsEventStatus_eIgnore);
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  // Event driven scroll ended
+  mHub->AsyncPanZoomStopped();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::PostScrollState());
+
+  HandleEventAndCheckState(aReleaseEventCreator(210, 210),
+                           MockAccessibleCaretEventHub::PostScrollState(),
+                           nsEventStatus_eIgnore);
+
+  check.Call("2");
+
+  // Receive another press event.
+  HandleEventAndCheckState(aPressEventCreator(220, 220),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  HandleEventAndCheckState(aMoveEventCreator(230, 230),
+                           MockAccessibleCaretEventHub::PressNoCaretState(),
+                           nsEventStatus_eIgnore);
+
+  check.Call("3");
+
+  // Another APZ scroll started
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  // Another APZ scroll ended
+  mHub->AsyncPanZoomStopped();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::PostScrollState());
+
+  HandleEventAndCheckState(aReleaseEventCreator(310, 310),
+                           MockAccessibleCaretEventHub::PostScrollState(),
+                           nsEventStatus_eIgnore);
+
+  check.Call("4");
+
+  // Simulate scroll end fired by timer.
+  MockAccessibleCaretEventHub::FireScrollEnd(nullptr, mHub);
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::NoActionState());
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestNoEventAsyncPanZoomScroll)
+{
+  MockFunction<void(::std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(check, Call("1"));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollStart());
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(),
+                OnScrollPositionChanged()).Times(0);
+
+    EXPECT_CALL(check, Call("2"));
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollEnd());
+  }
+
+  check.Call("1");
+
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->AsyncPanZoomStopped();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::PostScrollState());
+
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->AsyncPanZoomStopped();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::PostScrollState());
+
+  check.Call("2");
+
+  // Simulate scroll end fired by timer.
+  MockAccessibleCaretEventHub::FireScrollEnd(nullptr, mHub);
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::NoActionState());
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestAsyncPanZoomScrollStartedThenBlur)
+{
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollStart());
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollEnd()).Times(0);
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnBlur());
+  }
+
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->NotifyBlur(true);
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::NoActionState());
+}
+
+TEST_F(AccessibleCaretEventHubTester, TestAsyncPanZoomScrollEndedThenBlur)
+{
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollStart());
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnScrollEnd()).Times(0);
+    EXPECT_CALL(*mHub->GetMockAccessibleCaretManager(), OnBlur());
+  }
+
+  mHub->AsyncPanZoomStarted();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->ScrollPositionChanged();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::ScrollState());
+
+  mHub->AsyncPanZoomStopped();
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::PostScrollState());
+
+  mHub->NotifyBlur(true);
+  EXPECT_EQ(mHub->GetState(), MockAccessibleCaretEventHub::NoActionState());
+}
+
+} // namespace mozilla