TabContents -> WebContentsImpl, part 4.

content/browser/tab_contents/tab_contents_delegate_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/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
-#include "content/browser/tab_contents/tab_contents.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "content/test/test_browser_context.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-class MockWebContentsDelegate : public content::WebContentsDelegate {
- public:
-  virtual ~MockWebContentsDelegate() {}
-};
-
-TEST(WebContentsDelegateTest, UnregisterInDestructor) {
-  MessageLoop loop(MessageLoop::TYPE_UI);
-  TestBrowserContext browser_context;
-
-  scoped_ptr<TabContents> contents_a(
-      new TabContents(&browser_context, NULL, MSG_ROUTING_NONE, NULL, NULL));
-  scoped_ptr<TabContents> contents_b(
-      new TabContents(&browser_context, NULL, MSG_ROUTING_NONE, NULL, NULL));
-  EXPECT_TRUE(contents_a->GetDelegate() == NULL);
-  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
-
-  scoped_ptr<MockWebContentsDelegate> delegate(new MockWebContentsDelegate());
-
-  // Setting a delegate should work correctly.
-  contents_a->SetDelegate(delegate.get());
-  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
-  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
-
-  // A delegate can be a delegate to multiple TabContents.
-  contents_b->SetDelegate(delegate.get());
-  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
-  EXPECT_EQ(delegate.get(), contents_b->GetDelegate());
-
-  // Setting the same delegate multiple times should work correctly.
-  contents_b->SetDelegate(delegate.get());
-  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
-  EXPECT_EQ(delegate.get(), contents_b->GetDelegate());
-
-  // Setting delegate to NULL should work correctly.
-  contents_b->SetDelegate(NULL);
-  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
-  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
-
-  // Destroying the delegate while it is still the delegate
-  // for a TabContents should unregister it.
-  contents_b->SetDelegate(delegate.get());
-  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
-  EXPECT_EQ(delegate.get(), contents_b->GetDelegate());
-  delegate.reset(NULL);
-  EXPECT_TRUE(contents_a->GetDelegate() == NULL);
-  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
-
-  // Destroy the tab contents and run the message loop to prevent leaks.
-  contents_a.reset(NULL);
-  contents_b.reset(NULL);
-  loop.RunAllPending();
-}
-
-}  // namespace