content/browser/web_contents/web_contents_delegate_unittest.cc

   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
  14 namespace content {
  15
  16 class MockWebContentsDelegate : public WebContentsDelegate {
  17 };
  18
  19 class WebContentsDelegateTest : public RenderViewHostImplTestHarness {
  20 };
  21
  22 TEST_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