Make toasts notice when they're hidden and send the mouse-out event.

ui/message_center/views/message_popup_collection_unittest.cc

 // Copyright (c) 2013 The Chromium 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 "ui/message_center/views/message_popup_collection.h"
 
 #include <list>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/events/event.h"
+#include "ui/base/events/event_constants.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/rect.h"
 #include "ui/message_center/fake_message_center.h"
 #include "ui/message_center/views/toast_contents_view.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/widget/widget.h"
+#include "ui/views/widget/widget_delegate.h"
 
 namespace message_center {
 namespace test {
 
 class MessagePopupCollectionTest : public views::ViewsTestBase {
  public:
   virtual void SetUp() OVERRIDE {
     views::ViewsTestBase::SetUp();
     MessageCenter::Initialize();
     collection_.reset(new MessagePopupCollection(
@@ skipping 15 matching lines @@
     views::ViewsTestBase::TearDown();
   }
 
  protected:
   MessagePopupCollection* collection() { return collection_.get(); }
 
   size_t GetToastCounts() {
     return collection_->toasts_.size();
   }
 
+  bool MouseInCollection() {
+    return collection_->latest_toast_entered_ != NULL;
+  }
+
   bool IsToastShown(const std::string& id) {
     views::Widget* widget = collection_->GetWidgetForTest(id);
     return widget && widget->IsVisible();
   }
 
   views::Widget* GetWidget(const std::string& id) {
     return collection_->GetWidgetForTest(id);
   }
 
   gfx::Rect GetWorkArea() {
@@ skipping 264 matching lines @@
   EXPECT_LT(r1.x(), GetWorkArea().CenterPoint().x());
 
   CloseAllToastsAndWait();
   EXPECT_EQ(0u, GetToastCounts());
 
   // Restore simulated taskbar position to bottom.
   collection()->SetDisplayInfo(gfx::Rect(0, 0, 600, 390),   // Work-area.
                                gfx::Rect(0, 0, 600, 400));  // Display-bounds.
 }
 
+TEST_F(MessagePopupCollectionTest, DetectMouseHover) {
+  std::string id0 = AddNotification();
+  std::string id1 = AddNotification();
+  WaitForTransitionsDone();
+
+  views::WidgetDelegateView* toast0 = GetToast(id0);
+  EXPECT_TRUE(toast0 != NULL);
+  views::WidgetDelegateView* toast1 = GetToast(id1);
+  EXPECT_TRUE(toast1 != NULL);
+
+  ui::MouseEvent event(ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(), 0);
+
+  // Test that mouse detection logic works in presence of out-of-order events.
+  toast0->OnMouseEntered(event);
+  EXPECT_TRUE(MouseInCollection());
+  toast1->OnMouseEntered(event);
+  EXPECT_TRUE(MouseInCollection());
+  toast0->OnMouseExited(event);
+  EXPECT_TRUE(MouseInCollection());
+  toast1->OnMouseExited(event);
+  EXPECT_FALSE(MouseInCollection());
+
+  // Test that mouse detection logic works in presence of WindowClosing events.
+  toast0->OnMouseEntered(event);
+  EXPECT_TRUE(MouseInCollection());
+  toast1->OnMouseEntered(event);
+  EXPECT_TRUE(MouseInCollection());
+  toast0->WindowClosing();
+  EXPECT_TRUE(MouseInCollection());
+  toast1->WindowClosing();
+  EXPECT_FALSE(MouseInCollection());
+}
+
 // TODO(dimich): Test repositioning - both normal one and when user is closing
 // the toasts.
 
 }  // namespace test
 }  // namespace message_center