// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "flutter/shell/platform/common/json_message_codec.h"
#include "flutter/shell/platform/embedder/embedder.h"
#include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
#include "flutter/shell/platform/windows/flutter_windows_engine.h"
#include "flutter/shell/platform/windows/keyboard_key_channel_handler.h"
#include "flutter/shell/platform/windows/keyboard_key_handler.h"
#include "flutter/shell/platform/windows/testing/engine_modifier.h"
#include "flutter/shell/platform/windows/testing/flutter_window_win32_test.h"
#include "flutter/shell/platform/windows/testing/mock_window_binding_handler.h"
#include "flutter/shell/platform/windows/testing/test_keyboard.h"
#include "flutter/shell/platform/windows/text_input_plugin.h"
#include "flutter/shell/platform/windows/text_input_plugin_delegate.h"

#include "gmock/gmock.h"
#include "gtest/gtest.h"

#include <rapidjson/document.h>

using testing::_;
using testing::Invoke;
using testing::Return;

namespace flutter {
namespace testing {

namespace {
static constexpr int32_t kDefaultPointerDeviceId = 0;

// A key event handler that can be spied on while it forwards calls to the real
// key event handler.
class SpyKeyboardKeyHandler : public KeyboardHandlerBase {
 public:
  SpyKeyboardKeyHandler(flutter::BinaryMessenger* messenger,
                        KeyboardKeyHandler::EventDispatcher redispatch_event) {
    real_implementation_ =
        std::make_unique<KeyboardKeyHandler>(redispatch_event);
    real_implementation_->AddDelegate(
        std::make_unique<KeyboardKeyChannelHandler>(messenger));
    ON_CALL(*this, KeyboardHook(_, _, _, _, _, _, _))
        .WillByDefault(Invoke(real_implementation_.get(),
                              &KeyboardKeyHandler::KeyboardHook));
    ON_CALL(*this, TextHook(_, _))
        .WillByDefault(
            Invoke(real_implementation_.get(), &KeyboardKeyHandler::TextHook));
  }

  MOCK_METHOD7(KeyboardHook,
               bool(FlutterWindowsView* window,
                    int key,
                    int scancode,
                    int action,
                    char32_t character,
                    bool extended,
                    bool was_down));
  MOCK_METHOD2(TextHook,
               void(FlutterWindowsView* window, const std::u16string& text));
  MOCK_METHOD0(ComposeBeginHook, void());
  MOCK_METHOD0(ComposeCommitHook, void());
  MOCK_METHOD0(ComposeEndHook, void());
  MOCK_METHOD2(ComposeChangeHook,
               void(const std::u16string& text, int cursor_pos));

 private:
  std::unique_ptr<KeyboardKeyHandler> real_implementation_;
};

// A text input plugin that can be spied on while it forwards calls to the real
// text input plugin.
class SpyTextInputPlugin : public KeyboardHandlerBase,
                           public TextInputPluginDelegate {
 public:
  SpyTextInputPlugin(flutter::BinaryMessenger* messenger) {
    real_implementation_ = std::make_unique<TextInputPlugin>(messenger, this);
    ON_CALL(*this, KeyboardHook(_, _, _, _, _, _, _))
        .WillByDefault(
            Invoke(real_implementation_.get(), &TextInputPlugin::KeyboardHook));
    ON_CALL(*this, TextHook(_, _))
        .WillByDefault(
            Invoke(real_implementation_.get(), &TextInputPlugin::TextHook));
  }

  MOCK_METHOD7(KeyboardHook,
               bool(FlutterWindowsView* window,
                    int key,
                    int scancode,
                    int action,
                    char32_t character,
                    bool extended,
                    bool was_down));
  MOCK_METHOD2(TextHook,
               void(FlutterWindowsView* window, const std::u16string& text));
  MOCK_METHOD0(ComposeBeginHook, void());
  MOCK_METHOD0(ComposeCommitHook, void());
  MOCK_METHOD0(ComposeEndHook, void());
  MOCK_METHOD2(ComposeChangeHook,
               void(const std::u16string& text, int cursor_pos));

  virtual void OnCursorRectUpdated(const Rect& rect) {}
  virtual void OnResetImeComposing() {}

 private:
  std::unique_ptr<TextInputPlugin> real_implementation_;
};

class MockFlutterWindowWin32 : public FlutterWindowWin32,
                               public MockMessageQueue {
 public:
  MockFlutterWindowWin32() : FlutterWindowWin32(800, 600) {
    ON_CALL(*this, GetDpiScale())
        .WillByDefault(Return(this->FlutterWindowWin32::GetDpiScale()));
  }
  virtual ~MockFlutterWindowWin32() {}

  // Prevent copying.
  MockFlutterWindowWin32(MockFlutterWindowWin32 const&) = delete;
  MockFlutterWindowWin32& operator=(MockFlutterWindowWin32 const&) = delete;

  // Wrapper for GetCurrentDPI() which is a protected method.
  UINT GetDpi() { return GetCurrentDPI(); }

  // Simulates a WindowProc message from the OS.
  LRESULT InjectWindowMessage(UINT const message,
                              WPARAM const wparam,
                              LPARAM const lparam) {
    return Win32SendMessage(NULL, message, wparam, lparam);
  }

  void InjectMessages(int count, Win32Message message1, ...) {
    Win32Message messages[count];
    messages[0] = message1;
    va_list args;
    va_start(args, message1);
    for (int i = 1; i < count; i += 1) {
      messages[i] = va_arg(args, Win32Message);
    }
    va_end(args);
    InjectMessageList(count, messages);
  }

  MOCK_METHOD1(OnDpiScale, void(unsigned int));
  MOCK_METHOD2(OnResize, void(unsigned int, unsigned int));
  MOCK_METHOD4(OnPointerMove,
               void(double, double, FlutterPointerDeviceKind, int32_t));
  MOCK_METHOD5(OnPointerDown,
               void(double, double, FlutterPointerDeviceKind, int32_t, UINT));
  MOCK_METHOD5(OnPointerUp,
               void(double, double, FlutterPointerDeviceKind, int32_t, UINT));
  MOCK_METHOD2(OnPointerLeave, void(FlutterPointerDeviceKind, int32_t));
  MOCK_METHOD0(OnSetCursor, void());
  MOCK_METHOD4(OnScroll,
               void(double, double, FlutterPointerDeviceKind, int32_t));
  MOCK_METHOD0(GetDpiScale, float());
  MOCK_METHOD0(IsVisible, bool());
  MOCK_METHOD1(UpdateCursorRect, void(const Rect&));
  MOCK_METHOD0(OnResetImeComposing, void());

 protected:
  virtual BOOL Win32PeekMessage(LPMSG lpMsg,
                                HWND hWnd,
                                UINT wMsgFilterMin,
                                UINT wMsgFilterMax,
                                UINT wRemoveMsg) override {
    return MockMessageQueue::Win32PeekMessage(lpMsg, hWnd, wMsgFilterMin,
                                              wMsgFilterMax, wRemoveMsg);
  }

  LRESULT Win32DefWindowProc(HWND hWnd,
                             UINT Msg,
                             WPARAM wParam,
                             LPARAM lParam) override {
    return kWmResultDefault;
  }

 private:
  LRESULT Win32SendMessage(HWND hWnd,
                           UINT const message,
                           WPARAM const wparam,
                           LPARAM const lparam) override {
    return HandleMessage(message, wparam, lparam);
  }
};

class MockWindowBindingHandlerDelegate : public WindowBindingHandlerDelegate {
 public:
  MockWindowBindingHandlerDelegate() {}

  // Prevent copying.
  MockWindowBindingHandlerDelegate(MockWindowBindingHandlerDelegate const&) =
      delete;
  MockWindowBindingHandlerDelegate& operator=(
      MockWindowBindingHandlerDelegate const&) = delete;

  MOCK_METHOD2(OnWindowSizeChanged, void(size_t, size_t));
  MOCK_METHOD4(OnPointerMove,
               void(double, double, FlutterPointerDeviceKind, int32_t));
  MOCK_METHOD5(OnPointerDown,
               void(double,
                    double,
                    FlutterPointerDeviceKind,
                    int32_t,
                    FlutterPointerMouseButtons));
  MOCK_METHOD5(OnPointerUp,
               void(double,
                    double,
                    FlutterPointerDeviceKind,
                    int32_t,
                    FlutterPointerMouseButtons));
  MOCK_METHOD2(OnPointerLeave, void(FlutterPointerDeviceKind, int32_t));
  MOCK_METHOD1(OnText, void(const std::u16string&));
  MOCK_METHOD6(OnKey, bool(int, int, int, char32_t, bool, bool));
  MOCK_METHOD0(OnComposeBegin, void());
  MOCK_METHOD0(OnComposeCommit, void());
  MOCK_METHOD0(OnComposeEnd, void());
  MOCK_METHOD2(OnComposeChange, void(const std::u16string&, int));
  MOCK_METHOD1(OnUpdateSemanticsEnabled, void(bool));
  MOCK_METHOD7(OnScroll,
               void(double,
                    double,
                    double,
                    double,
                    int,
                    FlutterPointerDeviceKind,
                    int32_t));
  MOCK_METHOD0(OnPlatformBrightnessChanged, void());
};

// A FlutterWindowsView that overrides the RegisterKeyboardHandlers function
// to register the keyboard hook handlers that can be spied upon.
class TestFlutterWindowsView : public FlutterWindowsView {
 public:
  TestFlutterWindowsView(std::unique_ptr<WindowBindingHandler> window_binding,
                         WPARAM virtual_key,
                         bool is_printable = true)
      : FlutterWindowsView(std::move(window_binding)),
        virtual_key_(virtual_key),
        is_printable_(is_printable) {}

  SpyKeyboardKeyHandler* key_event_handler;
  SpyTextInputPlugin* text_input_plugin;

  void InjectPendingEvents(MockFlutterWindowWin32* win32window) {
    win32window->InjectMessageList(pending_responds_.size(),
                                   pending_responds_.data());
    pending_responds_.clear();
  }

 protected:
  void RegisterKeyboardHandlers(
      flutter::BinaryMessenger* messenger,
      flutter::KeyboardKeyHandler::EventDispatcher dispatch_event,
      flutter::KeyboardKeyEmbedderHandler::GetKeyStateHandler get_key_state)
      override {
    auto spy_key_event_handler = std::make_unique<SpyKeyboardKeyHandler>(
        messenger, [this](UINT cInputs, LPINPUT pInputs, int cbSize) -> UINT {
          return this->SendInput(cInputs, pInputs, cbSize);
        });
    auto spy_text_input_plugin =
        std::make_unique<SpyTextInputPlugin>(messenger);
    key_event_handler = spy_key_event_handler.get();
    text_input_plugin = spy_text_input_plugin.get();
    AddKeyboardHandler(std::move(spy_key_event_handler));
    AddKeyboardHandler(std::move(spy_text_input_plugin));
  }

 private:
  UINT SendInput(UINT cInputs, LPINPUT pInputs, int cbSize) {
    // Simulate the event loop by just sending the event sent to
    // "SendInput" directly to the window.
    const KEYBDINPUT kbdinput = pInputs->ki;
    const UINT message =
        (kbdinput.dwFlags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
    const bool is_key_up = kbdinput.dwFlags & KEYEVENTF_KEYUP;
    const LPARAM lparam = CreateKeyEventLparam(
        kbdinput.wScan, kbdinput.dwFlags & KEYEVENTF_EXTENDEDKEY, is_key_up);
    // Windows would normally fill in the virtual key code for us, so we
    // simulate it for the test with the key we know is in the test. The
    // KBDINPUT we're passed doesn't have it filled in (on purpose, so that
    // Windows will fill it in).
    //
    // TODO(dkwingsmt): Don't check the message results for redispatched
    // messages for now, because making them work takes non-trivial rework
    // to our current structure. https://github.com/flutter/flutter/issues/87843
    // If this is resolved, change them to kWmResultDefault.
    pending_responds_.push_back(
        Win32Message{message, virtual_key_, lparam, kWmResultDontCheck});
    if (is_printable_ && (kbdinput.dwFlags & KEYEVENTF_KEYUP) == 0) {
      pending_responds_.push_back(
          Win32Message{WM_CHAR, virtual_key_, lparam, kWmResultDontCheck});
    }
    return 1;
  }

  std::vector<Win32Message> pending_responds_;
  WPARAM virtual_key_;
  bool is_printable_;
};

// The static value to return as the "handled" value from the framework for key
// events. Individual tests set this to change the framework response that the
// test engine simulates.
static bool test_response = false;

// Returns an engine instance configured with dummy project path values, and
// overridden methods for sending platform messages, so that the engine can
// respond as if the framework were connected.
std::unique_ptr<FlutterWindowsEngine> GetTestEngine() {
  FlutterDesktopEngineProperties properties = {};
  properties.assets_path = L"C:\\foo\\flutter_assets";
  properties.icu_data_path = L"C:\\foo\\icudtl.dat";
  properties.aot_library_path = L"C:\\foo\\aot.so";
  FlutterProjectBundle project(properties);
  auto engine = std::make_unique<FlutterWindowsEngine>(project);

  EngineModifier modifier(engine.get());
  MockEmbedderApiForKeyboard(
      modifier, [] { return test_response; },
      [](const FlutterKeyEvent* event) { return false; });

  return engine;
}

}  // namespace

TEST(FlutterWindowWin32Test, CreateDestroy) {
  FlutterWindowWin32Test window(800, 600);
  ASSERT_TRUE(TRUE);
}

// Tests key event propagation of non-printable, non-modifier key down events.
TEST(FlutterWindowWin32Test, NonPrintableKeyDownPropagation) {
  ::testing::InSequence in_sequence;

  constexpr WPARAM virtual_key = VK_LEFT;
  constexpr WPARAM scan_code = 10;
  constexpr char32_t character = 0;
  MockFlutterWindowWin32 win32window;
  auto window_binding_handler =
      std::make_unique<::testing::NiceMock<MockWindowBindingHandler>>();
  TestFlutterWindowsView flutter_windows_view(
      std::move(window_binding_handler), virtual_key, false /* is_printable */);
  win32window.SetView(&flutter_windows_view);
  LPARAM lparam = CreateKeyEventLparam(scan_code, false, false);

  // Test an event not handled by the framework
  {
    test_response = false;
    flutter_windows_view.SetEngine(std::move(GetTestEngine()));
    EXPECT_CALL(*flutter_windows_view.key_event_handler,
                KeyboardHook(_, virtual_key, scan_code, WM_KEYDOWN, character,
                             false /* extended */, _))
        .Times(2)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin,
                KeyboardHook(_, _, _, _, _, _, _))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.key_event_handler, TextHook(_, _))
        .Times(0);
    EXPECT_CALL(*flutter_windows_view.text_input_plugin, TextHook(_, _))
        .Times(0);
    win32window.InjectMessages(1,
                               Win32Message{WM_KEYDOWN, virtual_key, lparam});
    flutter_windows_view.InjectPendingEvents(&win32window);
  }

  // Test an event handled by the framework
  {
    test_response = true;
    EXPECT_CALL(*flutter_windows_view.key_event_handler,
                KeyboardHook(_, virtual_key, scan_code, WM_KEYDOWN, character,
                             false /* extended */, false /* PrevState */))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin,
                KeyboardHook(_, _, _, _, _, _, _))
        .Times(0);
    win32window.InjectMessages(1,
                               Win32Message{WM_KEYDOWN, virtual_key, lparam});
    flutter_windows_view.InjectPendingEvents(&win32window);
  }
}

// Tests key event propagation of printable character key down events. These
// differ from non-printable characters in that they follow a different code
// path in the WndProc (HandleMessage), producing a follow-on WM_CHAR event.
TEST(FlutterWindowWin32Test, CharKeyDownPropagation) {
  // ::testing::InSequence in_sequence;

  constexpr WPARAM virtual_key = 65;  // The "A" key, which produces a character
  constexpr WPARAM scan_code = 30;
  constexpr char32_t character = 65;

  MockFlutterWindowWin32 win32window;
  auto window_binding_handler =
      std::make_unique<::testing::NiceMock<MockWindowBindingHandler>>();
  TestFlutterWindowsView flutter_windows_view(
      std::move(window_binding_handler), virtual_key, true /* is_printable */);
  win32window.SetView(&flutter_windows_view);
  LPARAM lparam = CreateKeyEventLparam(scan_code, false, false);
  flutter_windows_view.SetEngine(std::move(GetTestEngine()));

  // Test an event not handled by the framework
  {
    test_response = false;
    EXPECT_CALL(*flutter_windows_view.key_event_handler,
                KeyboardHook(_, virtual_key, scan_code, WM_KEYDOWN, character,
                             false, false))
        .Times(2)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin,
                KeyboardHook(_, _, _, _, _, _, _))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.key_event_handler, TextHook(_, _))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin, TextHook(_, _))
        .Times(1)
        .RetiresOnSaturation();
    win32window.InjectMessages(2, Win32Message{WM_KEYDOWN, virtual_key, lparam},
                               Win32Message{WM_CHAR, virtual_key, lparam});
    flutter_windows_view.InjectPendingEvents(&win32window);
  }

  // Test an event handled by the framework
  {
    test_response = true;
    EXPECT_CALL(*flutter_windows_view.key_event_handler,
                KeyboardHook(_, virtual_key, scan_code, WM_KEYDOWN, character,
                             false, false))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin,
                KeyboardHook(_, _, _, _, _, _, _))
        .Times(0);
    EXPECT_CALL(*flutter_windows_view.key_event_handler, TextHook(_, _))
        .Times(0);
    EXPECT_CALL(*flutter_windows_view.text_input_plugin, TextHook(_, _))
        .Times(0);
    win32window.InjectMessages(2, Win32Message{WM_KEYDOWN, virtual_key, lparam},
                               Win32Message{WM_CHAR, virtual_key, lparam});
    flutter_windows_view.InjectPendingEvents(&win32window);
  }
}

// Tests key event propagation of modifier key down events. This is different
// from non-printable events in that they call MapVirtualKey, resulting in a
// slightly different code path.
TEST(FlutterWindowWin32Test, ModifierKeyDownPropagation) {
  constexpr WPARAM virtual_key = VK_LSHIFT;
  constexpr WPARAM scan_code = 0x2a;
  constexpr char32_t character = 0;
  MockFlutterWindowWin32 win32window;
  auto window_binding_handler =
      std::make_unique<::testing::NiceMock<MockWindowBindingHandler>>();
  TestFlutterWindowsView flutter_windows_view(
      std::move(window_binding_handler), virtual_key, false /* is_printable */);
  win32window.SetView(&flutter_windows_view);
  LPARAM lparam = CreateKeyEventLparam(scan_code, false, false);

  // Test an event not handled by the framework
  {
    test_response = false;
    flutter_windows_view.SetEngine(std::move(GetTestEngine()));
    EXPECT_CALL(*flutter_windows_view.key_event_handler,
                KeyboardHook(_, virtual_key, scan_code, WM_KEYDOWN, character,
                             false /* extended */, false))
        .Times(2)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin,
                KeyboardHook(_, _, _, _, _, _, _))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.key_event_handler, TextHook(_, _))
        .Times(0);
    EXPECT_CALL(*flutter_windows_view.text_input_plugin, TextHook(_, _))
        .Times(0);
    EXPECT_EQ(win32window.InjectWindowMessage(WM_KEYDOWN, virtual_key, lparam),
              0);
    flutter_windows_view.InjectPendingEvents(&win32window);
  }

  // Test an event handled by the framework
  {
    test_response = true;
    EXPECT_CALL(*flutter_windows_view.key_event_handler,
                KeyboardHook(_, virtual_key, scan_code, WM_KEYDOWN, character,
                             false /* extended */, false))
        .Times(1)
        .RetiresOnSaturation();
    EXPECT_CALL(*flutter_windows_view.text_input_plugin,
                KeyboardHook(_, _, _, _, _, _, _))
        .Times(0);
    EXPECT_EQ(win32window.InjectWindowMessage(WM_KEYDOWN, virtual_key, lparam),
              0);
    flutter_windows_view.InjectPendingEvents(&win32window);
  }
}

// Tests that composing rect updates are transformed from Flutter logical
// coordinates to device coordinates and passed to the text input manager
// when the DPI scale is 100% (96 DPI).
TEST(FlutterWindowWin32Test, OnCursorRectUpdatedRegularDPI) {
  MockFlutterWindowWin32 win32window;
  ON_CALL(win32window, GetDpiScale()).WillByDefault(Return(1.0));
  EXPECT_CALL(win32window, GetDpiScale()).Times(1);

  Rect cursor_rect(Point(10, 20), Size(30, 40));
  EXPECT_CALL(win32window, UpdateCursorRect(cursor_rect)).Times(1);

  win32window.OnCursorRectUpdated(cursor_rect);
}

// Tests that composing rect updates are transformed from Flutter logical
// coordinates to device coordinates and passed to the text input manager
// when the DPI scale is 150% (144 DPI).
TEST(FlutterWindowWin32Test, OnCursorRectUpdatedHighDPI) {
  MockFlutterWindowWin32 win32window;
  ON_CALL(win32window, GetDpiScale()).WillByDefault(Return(1.5));
  EXPECT_CALL(win32window, GetDpiScale()).Times(1);

  Rect expected_cursor_rect(Point(15, 30), Size(45, 60));
  EXPECT_CALL(win32window, UpdateCursorRect(expected_cursor_rect)).Times(1);

  Rect cursor_rect(Point(10, 20), Size(30, 40));
  win32window.OnCursorRectUpdated(cursor_rect);
}

TEST(FlutterWindowWin32Test, OnPointerStarSendsDeviceType) {
  FlutterWindowWin32 win32window(100, 100);
  MockWindowBindingHandlerDelegate delegate;
  win32window.SetView(&delegate);
  // Move
  EXPECT_CALL(delegate,
              OnPointerMove(10.0, 10.0, kFlutterPointerDeviceKindMouse,
                            kDefaultPointerDeviceId))
      .Times(1);
  EXPECT_CALL(delegate,
              OnPointerMove(10.0, 10.0, kFlutterPointerDeviceKindTouch,
                            kDefaultPointerDeviceId))
      .Times(1);
  EXPECT_CALL(delegate,
              OnPointerMove(10.0, 10.0, kFlutterPointerDeviceKindStylus,
                            kDefaultPointerDeviceId))
      .Times(1);

  // Down
  EXPECT_CALL(
      delegate,
      OnPointerDown(10.0, 10.0, kFlutterPointerDeviceKindMouse,
                    kDefaultPointerDeviceId, kFlutterPointerButtonMousePrimary))
      .Times(1);
  EXPECT_CALL(
      delegate,
      OnPointerDown(10.0, 10.0, kFlutterPointerDeviceKindTouch,
                    kDefaultPointerDeviceId, kFlutterPointerButtonMousePrimary))
      .Times(1);
  EXPECT_CALL(
      delegate,
      OnPointerDown(10.0, 10.0, kFlutterPointerDeviceKindStylus,
                    kDefaultPointerDeviceId, kFlutterPointerButtonMousePrimary))
      .Times(1);

  // Up
  EXPECT_CALL(delegate, OnPointerUp(10.0, 10.0, kFlutterPointerDeviceKindMouse,
                                    kDefaultPointerDeviceId,
                                    kFlutterPointerButtonMousePrimary))
      .Times(1);
  EXPECT_CALL(delegate, OnPointerUp(10.0, 10.0, kFlutterPointerDeviceKindTouch,
                                    kDefaultPointerDeviceId,
                                    kFlutterPointerButtonMousePrimary))
      .Times(1);
  EXPECT_CALL(delegate, OnPointerUp(10.0, 10.0, kFlutterPointerDeviceKindStylus,
                                    kDefaultPointerDeviceId,
                                    kFlutterPointerButtonMousePrimary))
      .Times(1);

  // Leave
  EXPECT_CALL(delegate, OnPointerLeave(kFlutterPointerDeviceKindMouse,
                                       kDefaultPointerDeviceId))
      .Times(1);
  EXPECT_CALL(delegate, OnPointerLeave(kFlutterPointerDeviceKindTouch,
                                       kDefaultPointerDeviceId))
      .Times(1);
  EXPECT_CALL(delegate, OnPointerLeave(kFlutterPointerDeviceKindStylus,
                                       kDefaultPointerDeviceId))
      .Times(1);

  win32window.OnPointerMove(10.0, 10.0, kFlutterPointerDeviceKindMouse,
                            kDefaultPointerDeviceId);
  win32window.OnPointerDown(10.0, 10.0, kFlutterPointerDeviceKindMouse,
                            kDefaultPointerDeviceId, WM_LBUTTONDOWN);
  win32window.OnPointerUp(10.0, 10.0, kFlutterPointerDeviceKindMouse,
                          kDefaultPointerDeviceId, WM_LBUTTONDOWN);
  win32window.OnPointerLeave(kFlutterPointerDeviceKindMouse,
                             kDefaultPointerDeviceId);

  // Touch
  win32window.OnPointerMove(10.0, 10.0, kFlutterPointerDeviceKindTouch,
                            kDefaultPointerDeviceId);
  win32window.OnPointerDown(10.0, 10.0, kFlutterPointerDeviceKindTouch,
                            kDefaultPointerDeviceId, WM_LBUTTONDOWN);
  win32window.OnPointerUp(10.0, 10.0, kFlutterPointerDeviceKindTouch,
                          kDefaultPointerDeviceId, WM_LBUTTONDOWN);
  win32window.OnPointerLeave(kFlutterPointerDeviceKindTouch,
                             kDefaultPointerDeviceId);

  // Pen
  win32window.OnPointerMove(10.0, 10.0, kFlutterPointerDeviceKindStylus,
                            kDefaultPointerDeviceId);
  win32window.OnPointerDown(10.0, 10.0, kFlutterPointerDeviceKindStylus,
                            kDefaultPointerDeviceId, WM_LBUTTONDOWN);
  win32window.OnPointerUp(10.0, 10.0, kFlutterPointerDeviceKindStylus,
                          kDefaultPointerDeviceId, WM_LBUTTONDOWN);
  win32window.OnPointerLeave(kFlutterPointerDeviceKindStylus,
                             kDefaultPointerDeviceId);
}

}  // namespace testing
}  // namespace flutter