1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/compiler_specific.h"
6#include "base/memory/scoped_ptr.h"
7#include "base/message_loop/message_loop.h"
8#include "content/browser/web_contents/web_contents_impl.h"
9#include "content/public/browser/web_contents_delegate.h"
10#include "content/public/test/test_browser_context.h"
11#include "content/test/test_render_view_host.h"
12#include "testing/gtest/include/gtest/gtest.h"
13
14namespace content {
15
16class MockWebContentsDelegate : public WebContentsDelegate {
17};
18
19class WebContentsDelegateTest : public RenderViewHostImplTestHarness {
20};
21
22TEST_F(WebContentsDelegateTest, UnregisterInDestructor) {
23  scoped_ptr<WebContentsImpl> contents_a(static_cast<WebContentsImpl*>(
24      WebContents::Create(WebContents::CreateParams(browser_context()))));
25  scoped_ptr<WebContentsImpl> contents_b(static_cast<WebContentsImpl*>(
26      WebContents::Create(WebContents::CreateParams(browser_context()))));
27  EXPECT_EQ(NULL, contents_a->GetDelegate());
28  EXPECT_EQ(NULL, contents_b->GetDelegate());
29
30  scoped_ptr<MockWebContentsDelegate> delegate(new MockWebContentsDelegate());
31
32  // Setting a delegate should work correctly.
33  contents_a->SetDelegate(delegate.get());
34  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
35  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
36
37  // A delegate can be a delegate to multiple WebContentsImpl.
38  contents_b->SetDelegate(delegate.get());
39  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
40  EXPECT_EQ(delegate.get(), contents_b->GetDelegate());
41
42  // Setting the same delegate multiple times should work correctly.
43  contents_b->SetDelegate(delegate.get());
44  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
45  EXPECT_EQ(delegate.get(), contents_b->GetDelegate());
46
47  // Setting delegate to NULL should work correctly.
48  contents_b->SetDelegate(NULL);
49  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
50  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
51
52  // Destroying the delegate while it is still the delegate for a
53  // WebContentsImpl should unregister it.
54  contents_b->SetDelegate(delegate.get());
55  EXPECT_EQ(delegate.get(), contents_a->GetDelegate());
56  EXPECT_EQ(delegate.get(), contents_b->GetDelegate());
57  delegate.reset(NULL);
58  EXPECT_TRUE(contents_a->GetDelegate() == NULL);
59  EXPECT_TRUE(contents_b->GetDelegate() == NULL);
60
61  // Destroy the WebContentses and run the message loop to prevent leaks.
62  contents_a.reset();
63  contents_b.reset();
64}
65
66}  // namespace content
67