Ensures Widget::InitParams::top_level is set correctly before calling

ui/views/widget/widget_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/events/event_utils.h"
@@ skipping 1392 matching lines @@
     widget->OnGestureEvent(&end);
 
     EXPECT_EQ(1, scroll_view->GetEventCount(ui::ET_GESTURE_SCROLL_BEGIN));
     EXPECT_EQ(1, scroll_view->GetEventCount(ui::ET_GESTURE_SCROLL_UPDATE));
     EXPECT_EQ(1, scroll_view->GetEventCount(ui::ET_GESTURE_SCROLL_END));
   }
 
   widget->CloseNow();
 }
 
+// Used by SetTopLevelCorrectly to track calls to OnBeforeWidgetInit().
+class VerifyTopLevelDelegate : public TestViewsDelegate {
+ public:
+  VerifyTopLevelDelegate()
+      : on_before_init_called_(false),
+        is_top_level_(false) {
+  }
+
+  bool on_before_init_called() const { return on_before_init_called_; }
+  bool is_top_level() const { return is_top_level_; }
+
+  virtual void OnBeforeWidgetInit(
+      Widget::InitParams* params,
+      internal::NativeWidgetDelegate* delegate) OVERRIDE {
+    on_before_init_called_ = true;
+    is_top_level_ = params->top_level;
+  }
+
+ private:
+  bool on_before_init_called_;
+  bool is_top_level_;
+
+  DISALLOW_COPY_AND_ASSIGN(VerifyTopLevelDelegate);
+};
+
+// Verifies |top_level| is correctly passed to
+// ViewsDelegate::OnBeforeWidgetInit().
+TEST_F(WidgetTest, SetTopLevelCorrectly) {
+  set_views_delegate(NULL);
+  VerifyTopLevelDelegate* delegate = new VerifyTopLevelDelegate;
+  set_views_delegate(delegate);  // ViewsTestBase takes ownership.
+  scoped_ptr<Widget> widget(new Widget);
+  Widget::InitParams params =
+      CreateParams(views::Widget::InitParams::TYPE_POPUP);
+  params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  widget->Init(params);
+  EXPECT_TRUE(delegate->on_before_init_called());
+  EXPECT_TRUE(delegate->is_top_level());
+}
+
 }  // namespace
 }  // namespace views