src/chrome/browser/prerender/prerender_manager_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/message_loop/message_loop.h"
   6 #include "chrome/browser/prerender/prerender_manager.h"
   7 #include "content/public/test/test_browser_thread.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10
  11 namespace prerender {
  12
  13 namespace {
  14
  15 // These tests don't require the dummy PrerenderContents & PrerenderManager that
  16 // the heavier PrerenderTest.* tests do.
  17 class PrerenderManagerTest : public testing::Test {
  18  public:
  19   PrerenderManagerTest()
  20       : ui_thread_(content::BrowserThread::UI, &message_loop_),
  21         prerender_manager_(NULL, NULL) {
  22   }
  23
  24   PrerenderManager* prerender_manager() { return &prerender_manager_; }
  25
  26   base::MessageLoop message_loop_;
  27   content::TestBrowserThread ui_thread_;
  28   PrerenderManager prerender_manager_;
  29 };
  30
  31 TEST_F(PrerenderManagerTest, IsWebContentsPrerenderedTest) {
  32   // The methods being tested should not dereference their WebContents, instead
  33   // they use it as a unique identifier.
  34   int not_a_webcontents = 0;
  35   content::WebContents* web_contents =
  36       reinterpret_cast<content::WebContents*>(&not_a_webcontents);
  37
  38   EXPECT_FALSE(prerender_manager()->IsWebContentsPrerendered(
  39       web_contents, NULL));
  40
  41   const Origin origin = ORIGIN_OMNIBOX;
  42   prerender_manager()->MarkWebContentsAsPrerendered(web_contents, origin);
  43
  44   Origin test_origin = ORIGIN_NONE;
  45   EXPECT_TRUE(prerender_manager()->IsWebContentsPrerendered(
  46       web_contents, &test_origin));
  47
  48   int also_not_a_webcontents = 1;
  49   content::WebContents* another_web_contents =
  50       reinterpret_cast<content::WebContents*>(&also_not_a_webcontents);
  51   EXPECT_FALSE(prerender_manager()->IsWebContentsPrerendered(
  52       another_web_contents, NULL));
  53
  54   EXPECT_EQ(origin, test_origin);
  55
  56   prerender_manager()->MarkWebContentsAsNotPrerendered(web_contents);
  57   EXPECT_FALSE(prerender_manager()->IsWebContentsPrerendered(
  58       web_contents, NULL));
  59 }
  60
  61 TEST_F(PrerenderManagerTest, WouldWebContentsBePrerenderedTest) {
  62   // The methods being tested should not dereference their WebContents, instead
  63   // they use it as a unique identifier.
  64   int not_a_webcontents = 0;
  65   content::WebContents* web_contents =
  66       reinterpret_cast<content::WebContents*>(&not_a_webcontents);
  67
  68   EXPECT_FALSE(prerender_manager()->WouldWebContentsBePrerendered(
  69       web_contents, NULL));
  70
  71   const Origin origin = ORIGIN_OMNIBOX;
  72   prerender_manager()->MarkWebContentsAsWouldBePrerendered(web_contents,
  73                                                            origin);
  74
  75   Origin test_origin = ORIGIN_NONE;
  76   EXPECT_TRUE(prerender_manager()->WouldWebContentsBePrerendered(
  77       web_contents, &test_origin));
  78   EXPECT_EQ(origin, test_origin);
  79
  80   int also_not_a_webcontents = 1;
  81   content::WebContents* another_web_contents =
  82       reinterpret_cast<content::WebContents*>(&also_not_a_webcontents);
  83   EXPECT_FALSE(prerender_manager()->WouldWebContentsBePrerendered(
  84       another_web_contents, NULL));
  85
  86   // Control group (aka WouldBe...) web_contents need to be removed twice. See
  87   // the comment in prerender_manager.cc at the definition of
  88   // WouldBePrerenderedWebContentsData and its inner enum State.
  89   prerender_manager()->MarkWebContentsAsNotPrerendered(web_contents);
  90   EXPECT_TRUE(prerender_manager()->WouldWebContentsBePrerendered(
  91       web_contents, NULL));
  92
  93   prerender_manager()->MarkWebContentsAsNotPrerendered(web_contents);
  94   EXPECT_FALSE(prerender_manager()->WouldWebContentsBePrerendered(
  95       web_contents, NULL));
  96 }
  97
  98 }  // namespace
  99
 100 }  // namespace prerender