Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 848 insertions, 0 deletions

diff --git a/layout/base/gtest/TestAccessibleCaretManager.cpp b/layout/base/gtest/TestAccessibleCaretManager.cpp
new file mode 100644
index 0000000000..464ad68fb0
--- /dev/null
+++ b/layout/base/gtest/TestAccessibleCaretManager.cpp
@@ -0,0 +1,848 @@
+/* -*- 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 <string>
+
+#include "AccessibleCaret.h"
+#include "AccessibleCaretManager.h"
+#include "mozilla/Preferences.h"
+
+using ::testing::_;
+using ::testing::DefaultValue;
+using ::testing::Eq;
+using ::testing::InSequence;
+using ::testing::MockFunction;
+using ::testing::Return;
+
+// -----------------------------------------------------------------------------
+// This file tests CaretStateChanged events and the appearance of the two
+// AccessibleCarets manipulated by AccessibleCaretManager.
+
+namespace mozilla {
+using dom::CaretChangedReason;
+
+class MOZ_RAII AutoRestoreBoolPref final {
+ public:
+  AutoRestoreBoolPref(const char* aPref, bool aValue) : mPref(aPref) {
+    Preferences::GetBool(mPref, &mOldValue);
+    Preferences::SetBool(mPref, aValue);
+  }
+
+  ~AutoRestoreBoolPref() { Preferences::SetBool(mPref, mOldValue); }
+
+ private:
+  const char* mPref = nullptr;
+  bool mOldValue = false;
+};
+
+class AccessibleCaretManagerTester : public ::testing::Test {
+ public:
+  class MockAccessibleCaret : public AccessibleCaret {
+   public:
+    MockAccessibleCaret() : AccessibleCaret(nullptr) {}
+
+    void SetAppearance(Appearance aAppearance) override {
+      // A simplified version without touching CaretElement().
+      mAppearance = aAppearance;
+    }
+
+    MOCK_METHOD2(SetPosition,
+                 PositionChangedResult(nsIFrame* aFrame, int32_t aOffset));
+
+  };  // class MockAccessibleCaret
+
+  class MockAccessibleCaretManager : public AccessibleCaretManager {
+   public:
+    using CaretMode = AccessibleCaretManager::CaretMode;
+    using AccessibleCaretManager::HideCaretsAndDispatchCaretStateChangedEvent;
+    using AccessibleCaretManager::UpdateCarets;
+
+    MockAccessibleCaretManager()
+        : AccessibleCaretManager(nullptr,
+                                 Carets{MakeUnique<MockAccessibleCaret>(),
+                                        MakeUnique<MockAccessibleCaret>()}) {}
+
+    MockAccessibleCaret& FirstCaret() {
+      return static_cast<MockAccessibleCaret&>(*mCarets.GetFirst());
+    }
+
+    MockAccessibleCaret& SecondCaret() {
+      return static_cast<MockAccessibleCaret&>(*mCarets.GetSecond());
+    }
+
+    bool CompareTreePosition(nsIFrame* aStartFrame,
+                             nsIFrame* aEndFrame) const override {
+      return true;
+    }
+
+    bool IsCaretDisplayableInCursorMode(
+        nsIFrame** aOutFrame = nullptr,
+        int32_t* aOutOffset = nullptr) const override {
+      return true;
+    }
+
+    bool UpdateCaretsForOverlappingTilt() override { return true; }
+
+    void UpdateCaretsForAlwaysTilt(const nsIFrame* aStartFrame,
+                                   const nsIFrame* aEndFrame) override {
+      if (mCarets.GetFirst()->IsVisuallyVisible()) {
+        mCarets.GetFirst()->SetAppearance(Appearance::Left);
+      }
+      if (mCarets.GetSecond()->IsVisuallyVisible()) {
+        mCarets.GetSecond()->SetAppearance(Appearance::Right);
+      }
+    }
+
+    Terminated IsTerminated() const override { return Terminated::No; }
+    bool IsScrollStarted() const { return mIsScrollStarted; }
+
+    Terminated MaybeFlushLayout() override { return Terminated::No; }
+
+    MOCK_CONST_METHOD0(GetCaretMode, CaretMode());
+    MOCK_METHOD2(DispatchCaretStateChangedEvent,
+                 void(CaretChangedReason aReason, const nsPoint* aPoint));
+    MOCK_CONST_METHOD1(HasNonEmptyTextContent, bool(nsINode* aNode));
+
+  };  // class MockAccessibleCaretManager
+
+  using Appearance = AccessibleCaret::Appearance;
+  using PositionChangedResult = AccessibleCaret::PositionChangedResult;
+  using CaretMode = MockAccessibleCaretManager::CaretMode;
+
+  AccessibleCaretManagerTester() {
+    DefaultValue<CaretMode>::Set(CaretMode::None);
+    DefaultValue<PositionChangedResult>::Set(PositionChangedResult::NotChanged);
+
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillRepeatedly(Return(PositionChangedResult::Position));
+
+    EXPECT_CALL(mManager.SecondCaret(), SetPosition(_, _))
+        .WillRepeatedly(Return(PositionChangedResult::Position));
+  }
+
+  AccessibleCaret::Appearance FirstCaretAppearance() {
+    return mManager.FirstCaret().GetAppearance();
+  }
+
+  AccessibleCaret::Appearance SecondCaretAppearance() {
+    return mManager.SecondCaret().GetAppearance();
+  }
+
+  // Member variables
+  MockAccessibleCaretManager mManager;
+
+};  // class AccessibleCaretManagerTester
+
+TEST_F(AccessibleCaretManagerTester, TestUpdatesInSelectionMode)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  // Set default preference.
+  AutoRestoreBoolPref savedPref("layout.accessiblecaret.always_tilt", false);
+
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Selection));
+
+  EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                            CaretChangedReason::Updateposition, nullptr))
+      .Times(3);
+
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+
+  mManager.OnScrollPositionChanged();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+}
+
+TEST_F(AccessibleCaretManagerTester, TestSingleTapOnNonEmptyInput)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_)).WillRepeatedly(Return(true));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("update"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Visibilitychange, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("mouse down"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+    EXPECT_CALL(check, Call("reflow"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+    EXPECT_CALL(check, Call("blur"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("mouse up"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("reflow2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+  }
+
+  // Simulate a single tap on a non-empty input.
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("update");
+
+  mManager.OnSelectionChanged(nullptr, nullptr,
+                              nsISelectionListener::DRAG_REASON |
+                                  nsISelectionListener::MOUSEDOWN_REASON);
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("mouse down");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("reflow");
+
+  mManager.OnBlur();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("blur");
+
+  mManager.OnSelectionChanged(nullptr, nullptr,
+                              nsISelectionListener::MOUSEUP_REASON);
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("mouse up");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("reflow2");
+
+  mManager.OnScrollPositionChanged();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+}
+
+TEST_F(AccessibleCaretManagerTester, TestSingleTapOnEmptyInput)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  // Set default preference.
+  AutoRestoreBoolPref savedPref(
+      "layout.accessiblecaret.caret_shown_when_long_tapping_on_empty_content",
+      false);
+
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_))
+      .WillRepeatedly(Return(false));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("update"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Visibilitychange, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("mouse down"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+    EXPECT_CALL(check, Call("reflow"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+    EXPECT_CALL(check, Call("blur"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("mouse up"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("reflow2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+  }
+
+  // Simulate a single tap on an empty input.
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("update");
+
+  mManager.OnSelectionChanged(nullptr, nullptr,
+                              nsISelectionListener::DRAG_REASON |
+                                  nsISelectionListener::MOUSEDOWN_REASON);
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("mouse down");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("reflow");
+
+  mManager.OnBlur();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("blur");
+
+  mManager.OnSelectionChanged(nullptr, nullptr,
+                              nsISelectionListener::MOUSEUP_REASON);
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("mouse up");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("reflow2");
+
+  mManager.OnScrollPositionChanged();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+}
+
+TEST_F(AccessibleCaretManagerTester, TestTypingAtEndOfInput)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_)).WillRepeatedly(Return(true));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("update"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Visibilitychange, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("keyboard"));
+
+    // No CaretStateChanged events should be dispatched since the caret has
+    // being hidden in cursor mode.
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+  }
+
+  // Simulate typing the end of the input.
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("update");
+
+  mManager.OnKeyboardEvent();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("keyboard");
+
+  mManager.OnSelectionChanged(nullptr, nullptr,
+                              nsISelectionListener::NO_REASON);
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+
+  mManager.OnScrollPositionChanged();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+}
+
+TEST_F(AccessibleCaretManagerTester, TestScrollInSelectionMode)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  // Set default preference.
+  AutoRestoreBoolPref savedPref("layout.accessiblecaret.always_tilt", false);
+
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Selection));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    // Initially, first caret is out of scrollport, and second caret is visible.
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillOnce(Return(PositionChangedResult::Invisible));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("reflow1"));
+
+    // After scroll ended, first caret is visible and second caret is out of
+    // scroll port.
+    EXPECT_CALL(mManager.SecondCaret(), SetPosition(_, _))
+        .WillOnce(Return(PositionChangedResult::Invisible));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("reflow2"));
+
+    // After the scroll ended, both carets are visible.
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend2"));
+  }
+
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+  check.Call("updatecarets");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+  check.Call("scrollstart1");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+  check.Call("reflow1");
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollend1");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollstart2");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("reflow2");
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Normal);
+  check.Call("scrollend2");
+}
+
+TEST_F(AccessibleCaretManagerTester,
+       TestScrollInSelectionModeWithAlwaysTiltPref)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  // Simulate Firefox Android preference.
+  AutoRestoreBoolPref savedPref("layout.accessiblecaret.always_tilt", true);
+
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Selection));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    // Initially, first caret is out of scrollport, and second caret is visible.
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillOnce(Return(PositionChangedResult::Invisible));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+    EXPECT_CALL(check, Call("scrollPositionChanged1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("reflow1"));
+
+    // After scroll ended, first caret is visible and second caret is out of
+    // scroll port.
+    EXPECT_CALL(mManager.SecondCaret(), SetPosition(_, _))
+        .WillOnce(Return(PositionChangedResult::Invisible));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(_, nullptr)).Times(0);
+    EXPECT_CALL(check, Call("scrollPositionChanged2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("reflow2"));
+
+    // After the scroll ended, both carets are visible.
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend2"));
+  }
+
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Right);
+  check.Call("updatecarets");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Right);
+  check.Call("scrollstart1");
+
+  mManager.OnScrollPositionChanged();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Right);
+  check.Call("scrollPositionChanged1");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Right);
+  check.Call("reflow1");
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Left);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollend1");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Left);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollstart2");
+
+  mManager.OnScrollPositionChanged();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Left);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollPositionChanged2");
+
+  mManager.OnReflow();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Left);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("reflow2");
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Left);
+  EXPECT_EQ(SecondCaretAppearance(), Appearance::Right);
+  check.Call("scrollend2");
+}
+
+TEST_F(AccessibleCaretManagerTester, TestScrollInCursorModeWhenLogicallyVisible)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_)).WillRepeatedly(Return(true));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("scrollstart1"));
+
+    // After scroll ended, the caret is out of scroll port.
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillRepeatedly(Return(PositionChangedResult::Invisible));
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("scrollend1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("scrollstart2"));
+
+    // After scroll ended, the caret is visible again.
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillRepeatedly(Return(PositionChangedResult::Position));
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("scrollend2"));
+  }
+
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("updatecarets");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("scrollstart1");
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollend1");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollstart2");
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("scrollend2");
+}
+
+TEST_F(AccessibleCaretManagerTester, TestScrollInCursorModeWhenHidden)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_)).WillRepeatedly(Return(true));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Visibilitychange, nullptr))
+        .Times(1);
+    EXPECT_CALL(check, Call("hidecarets"));
+
+    // After scroll ended, the caret is out of scroll port.
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillRepeatedly(Return(PositionChangedResult::Invisible));
+    EXPECT_CALL(check, Call("scrollend1"));
+
+    // After scroll ended, the caret is visible again.
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillRepeatedly(Return(PositionChangedResult::Position));
+    EXPECT_CALL(check, Call("scrollend2"));
+  }
+
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("updatecarets");
+
+  mManager.HideCaretsAndDispatchCaretStateChangedEvent();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("hidecarets");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("scrollend1");
+
+  mManager.OnScrollStart();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("scrollend2");
+}
+
+TEST_F(AccessibleCaretManagerTester, TestScrollInCursorModeOnEmptyContent)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  // Set default preference.
+  AutoRestoreBoolPref savedPref(
+      "layout.accessiblecaret.caret_shown_when_long_tapping_on_empty_content",
+      false);
+
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_))
+      .WillRepeatedly(Return(false));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart1"));
+
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillOnce(Return(PositionChangedResult::Invisible));
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("scrollstart3"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("scrollend3"));
+  }
+
+  // Simulate a pinch-zoom operation before tapping on an empty content.
+  mManager.OnScrollStart();
+  mManager.OnScrollEnd();
+  EXPECT_EQ(mManager.IsScrollStarted(), false);
+
+  // Simulate a single tap on an empty content.
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("updatecarets");
+
+  // Scroll the caret to be out of the viewport.
+  mManager.OnScrollStart();
+  check.Call("scrollstart1");
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollend1");
+
+  // Scroll the caret into the viewport.
+  mManager.OnScrollStart();
+  check.Call("scrollstart2");
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollend2");
+
+  // Scroll the caret within the viewport.
+  mManager.OnScrollStart();
+  check.Call("scrollstart3");
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("scrollend3");
+}
+
+TEST_F(AccessibleCaretManagerTester,
+       TestScrollInCursorModeWithCaretShownWhenLongTappingOnEmptyContentPref)
+MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
+  // Simulate Firefox Android preference.
+  AutoRestoreBoolPref savedPref(
+      "layout.accessiblecaret.caret_shown_when_long_tapping_on_empty_content",
+      true);
+
+  EXPECT_CALL(mManager, GetCaretMode())
+      .WillRepeatedly(Return(CaretMode::Cursor));
+
+  EXPECT_CALL(mManager, HasNonEmptyTextContent(_))
+      .WillRepeatedly(Return(false));
+
+  MockFunction<void(std::string aCheckPointName)> check;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("singletap updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("longtap updatecarets"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("longtap scrollstart1"));
+
+    EXPECT_CALL(mManager.FirstCaret(), SetPosition(_, _))
+        .WillOnce(Return(PositionChangedResult::Invisible));
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("longtap scrollend1"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("longtap scrollstart2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("longtap scrollend2"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Scroll, nullptr));
+    EXPECT_CALL(check, Call("longtap scrollstart3"));
+
+    EXPECT_CALL(mManager, DispatchCaretStateChangedEvent(
+                              CaretChangedReason::Updateposition, nullptr));
+    EXPECT_CALL(check, Call("longtap scrollend3"));
+  }
+
+  // Simulate a single tap on an empty input.
+  mManager.FirstCaret().SetAppearance(Appearance::None);
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+  check.Call("singletap updatecarets");
+
+  // Scroll the caret within the viewport.
+  mManager.OnScrollStart();
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::None);
+
+  // Simulate a long tap on an empty input.
+  mManager.FirstCaret().SetAppearance(Appearance::Normal);
+  mManager.UpdateCarets();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("longtap updatecarets");
+
+  // Scroll the caret to be out of the viewport.
+  mManager.OnScrollStart();
+  check.Call("longtap scrollstart1");
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::NormalNotShown);
+  check.Call("longtap scrollend1");
+
+  // Scroll the caret into the viewport.
+  mManager.OnScrollStart();
+  check.Call("longtap scrollstart2");
+  mManager.OnScrollPositionChanged();
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("longtap scrollend2");
+
+  // Scroll the caret within the viewport.
+  mManager.OnScrollStart();
+  check.Call("longtap scrollstart3");
+  mManager.OnScrollPositionChanged();
+  mManager.OnScrollEnd();
+  EXPECT_EQ(FirstCaretAppearance(), Appearance::Normal);
+  check.Call("longtap scrollend3");
+}
+
+}  // namespace mozilla