MacViews: Add WidgetEventGenerator to abstract platform-specific event generation for tests.

ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc

Index: ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc
diff --git a/ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc b/ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc
index b314667bede10ff6e5f42e979d5a1936942d47c3..17624549831ce4f53699002ce782c42b9362f2e4 100644
--- a/ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc
+++ b/ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc
@@ -229,4 +229,163 @@ TEST_F(DesktopNativeWidgetAuraTest, WidgetCanBeDestroyedFromNestedLoop) {
   run_loop.Run();
 }
 
+// This class provides functionality to create fullscreen and top level popup
+// windows. It additionally tests whether the destruction of these windows
+// occurs correctly in desktop AURA without crashing.
+// It provides facilities to test the following cases:-
+// 1. Child window destroyed which should lead to the destruction of the
+//    parent.
+// 2. Parent window destroyed which should lead to the child being destroyed.
+class DesktopAuraTopLevelWindowTest
+    : public views::TestViewsDelegate,
+      public aura::WindowObserver {
+ public:
+  DesktopAuraTopLevelWindowTest()
+      : top_level_widget_(NULL),
+        owned_window_(NULL),
+        owner_destroyed_(false),
+        owned_window_destroyed_(false) {}
+
+  virtual ~DesktopAuraTopLevelWindowTest() {
+    EXPECT_TRUE(owner_destroyed_);
+    EXPECT_TRUE(owned_window_destroyed_);
+    top_level_widget_ = NULL;
+    owned_window_ = NULL;
+  }
+
+  // views::TestViewsDelegate overrides.
+  virtual void OnBeforeWidgetInit(
+      Widget::InitParams* params,
+      internal::NativeWidgetDelegate* delegate) OVERRIDE {
+    if (!params->native_widget)
+      params->native_widget = new views::DesktopNativeWidgetAura(delegate);
+  }
+
+  void CreateTopLevelWindow(const gfx::Rect& bounds, bool fullscreen) {
+    Widget::InitParams init_params;
+    init_params.type = Widget::InitParams::TYPE_WINDOW;
+    init_params.bounds = bounds;
+    init_params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+    init_params.layer_type = aura::WINDOW_LAYER_NOT_DRAWN;
+    init_params.accept_events = fullscreen;
+
+    widget_.Init(init_params);
+
+    owned_window_ = new aura::Window(&child_window_delegate_);
+    owned_window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
+    owned_window_->SetName("TestTopLevelWindow");
+    if (fullscreen) {
+      owned_window_->SetProperty(aura::client::kShowStateKey,
+                                 ui::SHOW_STATE_FULLSCREEN);
+    } else {
+      owned_window_->SetType(ui::wm::WINDOW_TYPE_MENU);
+    }
+    owned_window_->Init(aura::WINDOW_LAYER_TEXTURED);
+    aura::client::ParentWindowWithContext(
+        owned_window_,
+        widget_.GetNativeView()->GetRootWindow(),
+        gfx::Rect(0, 0, 1900, 1600));
+    owned_window_->Show();
+    owned_window_->AddObserver(this);
+
+    ASSERT_TRUE(owned_window_->parent() != NULL);
+    owned_window_->parent()->AddObserver(this);
+
+    top_level_widget_ =
+        views::Widget::GetWidgetForNativeView(owned_window_->parent());
+    ASSERT_TRUE(top_level_widget_ != NULL);
+  }
+
+  void DestroyOwnedWindow() {
+    ASSERT_TRUE(owned_window_ != NULL);
+    delete owned_window_;
+  }
+
+  void DestroyOwnerWindow() {
+    ASSERT_TRUE(top_level_widget_ != NULL);
+    top_level_widget_->CloseNow();
+  }
+
+  virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {
+    window->RemoveObserver(this);
+    if (window == owned_window_) {
+      owned_window_destroyed_ = true;
+    } else if (window == top_level_widget_->GetNativeView()) {
+      owner_destroyed_ = true;
+    } else {
+      ADD_FAILURE() << "Unexpected window destroyed callback: " << window;
+    }
+  }
+
+  aura::Window* owned_window() {
+    return owned_window_;
+  }
+
+  views::Widget* top_level_widget() {
+    return top_level_widget_;
+  }
+
+ private:
+  views::Widget widget_;
+  views::Widget* top_level_widget_;
+  aura::Window* owned_window_;
+  bool owner_destroyed_;
+  bool owned_window_destroyed_;
+  aura::test::TestWindowDelegate child_window_delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopAuraTopLevelWindowTest);
+};
+
+TEST_F(WidgetTest, DesktopAuraFullscreenWindowDestroyedBeforeOwnerTest) {
+  ViewsDelegate::views_delegate = NULL;
+  DesktopAuraTopLevelWindowTest fullscreen_window;
+  ASSERT_NO_FATAL_FAILURE(fullscreen_window.CreateTopLevelWindow(
+      gfx::Rect(0, 0, 200, 200), true));
+
+  RunPendingMessages();
+  ASSERT_NO_FATAL_FAILURE(fullscreen_window.DestroyOwnedWindow());
+  RunPendingMessages();
+}
+
+TEST_F(WidgetTest, DesktopAuraFullscreenWindowOwnerDestroyed) {
+  ViewsDelegate::views_delegate = NULL;
+
+  DesktopAuraTopLevelWindowTest fullscreen_window;
+  ASSERT_NO_FATAL_FAILURE(fullscreen_window.CreateTopLevelWindow(
+      gfx::Rect(0, 0, 200, 200), true));
+
+  RunPendingMessages();
+  ASSERT_NO_FATAL_FAILURE(fullscreen_window.DestroyOwnerWindow());
+  RunPendingMessages();
+}
+
+TEST_F(WidgetTest, DesktopAuraTopLevelOwnedPopupTest) {
+  ViewsDelegate::views_delegate = NULL;
+  DesktopAuraTopLevelWindowTest popup_window;
+  ASSERT_NO_FATAL_FAILURE(popup_window.CreateTopLevelWindow(
+      gfx::Rect(0, 0, 200, 200), false));
+
+  RunPendingMessages();
+  ASSERT_NO_FATAL_FAILURE(popup_window.DestroyOwnedWindow());
+  RunPendingMessages();
+}
+
+// This test validates that when a top level owned popup Aura window is
+// resized, the widget is resized as well.
+TEST_F(WidgetTest, DesktopAuraTopLevelOwnedPopupResizeTest) {
+  ViewsDelegate::views_delegate = NULL;
+  DesktopAuraTopLevelWindowTest popup_window;
+  ASSERT_NO_FATAL_FAILURE(popup_window.CreateTopLevelWindow(
+      gfx::Rect(0, 0, 200, 200), false));
+
+  gfx::Rect new_size(0, 0, 400, 400);
+  popup_window.owned_window()->SetBounds(new_size);
+
+  EXPECT_EQ(popup_window.top_level_widget()->GetNativeView()->bounds().size(),
+            new_size.size());
+  RunPendingMessages();
+  ASSERT_NO_FATAL_FAILURE(popup_window.DestroyOwnedWindow());
+  RunPendingMessages();
+}
+
 }  // namespace views