// Copyright (c) 2011 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/logging.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/dom_operation_notification_details.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/tab_contents/chrome_interstitial_page.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/render_messages.h"
#include "chrome/common/url_constants.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "chrome/test/base/testing_pref_service.h"
#include "chrome/test/base/testing_profile.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/renderer_host/render_widget_host_view.h"
#include "content/browser/site_instance.h"
#include "content/browser/tab_contents/navigation_details.h"
#include "content/browser/tab_contents/navigation_entry.h"
#include "content/browser/tab_contents/test_tab_contents.h"
#include "content/common/view_messages.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/notification_source.h"
#include "content/public/common/bindings_policy.h"
#include "content/public/common/content_constants.h"
#include "content/test/test_browser_thread.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/base/message_box_flags.h"
#include "webkit/glue/webkit_glue.h"

using content::BrowserThread;
using webkit_glue::PasswordForm;

class TestInterstitialPage : public ChromeInterstitialPage {
 public:
  enum InterstitialState {
    UNDECIDED = 0,  // No decision taken yet.
    OKED,           // Proceed was called.
    CANCELED        // DontProceed was called.
  };

  class Delegate {
   public:
    virtual void TestInterstitialPageDeleted(
        TestInterstitialPage* interstitial) = 0;

   protected:
    virtual ~Delegate() {}
  };

  // IMPORTANT NOTE: if you pass stack allocated values for |state| and
  // |deleted| (like all interstitial related tests do at this point), make sure
  // to create an instance of the TestInterstitialPageStateGuard class on the
  // stack in your test.  This will ensure that the TestInterstitialPage states
  // are cleared when the test finishes.
  // Not doing so will cause stack trashing if your test does not hide the
  // interstitial, as in such a case it will be destroyed in the test TearDown
  // method and will dereference the |deleted| local variable which by then is
  // out of scope.
  TestInterstitialPage(TabContents* tab,
                       bool new_navigation,
                       const GURL& url,
                       InterstitialState* state,
                       bool* deleted)
      : ChromeInterstitialPage(tab, new_navigation, url),
        state_(state),
        deleted_(deleted),
        command_received_count_(0),
        delegate_(NULL) {
    *state_ = UNDECIDED;
    *deleted_ = false;
  }

  virtual ~TestInterstitialPage() {
    if (deleted_)
      *deleted_ = true;
    if (delegate_)
      delegate_->TestInterstitialPageDeleted(this);
  }

  virtual void DontProceed() {
    if (state_)
      *state_ = CANCELED;
    InterstitialPage::DontProceed();
  }
  virtual void Proceed() {
    if (state_)
      *state_ = OKED;
    InterstitialPage::Proceed();
  }

  int command_received_count() const {
    return command_received_count_;
  }

  void TestDomOperationResponse(const std::string& json_string) {
    DomOperationNotificationDetails details(json_string, 1);
    Observe(chrome::NOTIFICATION_DOM_OPERATION_RESPONSE,
            content::Source<RenderViewHost>(render_view_host()),
            content::Details<DomOperationNotificationDetails>(&details));
  }

  void TestDidNavigate(int page_id, const GURL& url) {
    ViewHostMsg_FrameNavigate_Params params;
    InitNavigateParams(&params, page_id, url, content::PAGE_TRANSITION_TYPED);
    DidNavigate(render_view_host(), params);
  }

  void TestRenderViewGone(base::TerminationStatus status, int error_code) {
    RenderViewGone(render_view_host(), status, error_code);
  }

  bool is_showing() const {
    return static_cast<TestRenderWidgetHostView*>(render_view_host()->view())->
        is_showing();
  }

  void ClearStates() {
    state_ = NULL;
    deleted_ = NULL;
    delegate_ = NULL;
  }

  void set_delegate(Delegate* delegate) {
    delegate_ = delegate;
  }

 protected:
  virtual RenderViewHost* CreateRenderViewHost() {
    return new TestRenderViewHost(
        SiteInstance::CreateSiteInstance(tab()->browser_context()),
        this, MSG_ROUTING_NONE);
  }

  virtual TabContentsView* CreateTabContentsView() { return NULL; }


  virtual void CommandReceived(const std::string& command) {
    command_received_count_++;
  }

 private:
  InterstitialState* state_;
  bool* deleted_;
  int command_received_count_;
  Delegate* delegate_;
};

class TestInterstitialPageStateGuard : public TestInterstitialPage::Delegate {
 public:
  explicit TestInterstitialPageStateGuard(
      TestInterstitialPage* interstitial_page)
      : interstitial_page_(interstitial_page) {
    DCHECK(interstitial_page_);
    interstitial_page_->set_delegate(this);
  }
  ~TestInterstitialPageStateGuard() {
    if (interstitial_page_)
      interstitial_page_->ClearStates();
  }

  virtual void TestInterstitialPageDeleted(TestInterstitialPage* interstitial) {
    DCHECK(interstitial_page_ == interstitial);
    interstitial_page_ = NULL;
  }

 private:
  TestInterstitialPage* interstitial_page_;
};

class TabContentsTest : public ChromeRenderViewHostTestHarness {
 public:
  TabContentsTest() : ui_thread_(BrowserThread::UI, &message_loop_) {
  }

 private:
  // Supply our own profile so we use the correct profile data. The test harness
  // is not supposed to overwrite a profile if it's already created.
  virtual void SetUp() {
    ChromeRenderViewHostTestHarness::SetUp();

    // Set some (WebKit) user preferences.
    TestingPrefService* pref_services = profile()->GetTestingPrefService();
#if defined(TOOLKIT_USES_GTK)
    pref_services->SetUserPref(prefs::kUsesSystemTheme,
                               Value::CreateBooleanValue(false));
#endif
    pref_services->SetUserPref(prefs::kDefaultCharset,
                               Value::CreateStringValue("utf8"));
    pref_services->SetUserPref(prefs::kWebKitDefaultFontSize,
                               Value::CreateIntegerValue(20));
    pref_services->SetUserPref(prefs::kWebKitTextAreasAreResizable,
                               Value::CreateBooleanValue(false));
    pref_services->SetUserPref(prefs::kWebKitUsesUniversalDetector,
                               Value::CreateBooleanValue(true));
    pref_services->SetUserPref("webkit.webprefs.foo",
                               Value::CreateStringValue("bar"));
  }

  content::TestBrowserThread ui_thread_;
};

// Test to make sure that title updates get stripped of whitespace.
TEST_F(TabContentsTest, UpdateTitle) {
  ViewHostMsg_FrameNavigate_Params params;
  InitNavigateParams(&params, 0, GURL(chrome::kAboutBlankURL),
                     content::PAGE_TRANSITION_TYPED);

  content::LoadCommittedDetails details;
  controller().RendererDidNavigate(params, &details);

  contents()->UpdateTitle(rvh(), 0, ASCIIToUTF16("    Lots O' Whitespace\n"),
                          base::i18n::LEFT_TO_RIGHT);
  EXPECT_EQ(ASCIIToUTF16("Lots O' Whitespace"), contents()->GetTitle());
}

// Test view source mode for the new tabs page.
TEST_F(TabContentsTest, NTPViewSource) {
  const char kUrl[] = "view-source:chrome://newtab";
  const GURL kGURL(kUrl);

  process()->sink().ClearMessages();

  controller().LoadURL(
      kGURL, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  rvh()->delegate()->RenderViewCreated(rvh());
  // Did we get the expected message?
  EXPECT_TRUE(process()->sink().GetFirstMessageMatching(
      ViewMsg_EnableViewSourceMode::ID));

  ViewHostMsg_FrameNavigate_Params params;
  InitNavigateParams(&params, 0, kGURL, content::PAGE_TRANSITION_TYPED);
  content::LoadCommittedDetails details;
  controller().RendererDidNavigate(params, &details);
  // Also check title and url.
  EXPECT_EQ(ASCIIToUTF16(kUrl), contents()->GetTitle());
}

// Test simple same-SiteInstance navigation.
TEST_F(TabContentsTest, SimpleNavigation) {
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();
  EXPECT_TRUE(contents()->pending_rvh() == NULL);

  // Navigate to URL
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(instance1, orig_rvh->site_instance());
  // Controller's pending entry will have a NULL site instance until we assign
  // it in DidNavigate.
  EXPECT_TRUE(controller().GetActiveEntry()->site_instance() == NULL);

  // DidNavigate from the page
  ViewHostMsg_FrameNavigate_Params params;
  InitNavigateParams(&params, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());
  EXPECT_EQ(instance1, orig_rvh->site_instance());
  // Controller's entry should now have the SiteInstance, or else we won't be
  // able to find it later.
  EXPECT_EQ(instance1, controller().GetActiveEntry()->site_instance());
}

// Test that we reject NavigateToEntry if the url is over content::kMaxURLChars.
TEST_F(TabContentsTest, NavigateToExcessivelyLongURL) {
  // Construct a URL that's kMaxURLChars + 1 long of all 'a's.
  const GURL url(std::string("http://example.org/").append(
      content::kMaxURLChars + 1, 'a'));

  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_GENERATED, std::string());
  EXPECT_TRUE(controller().GetActiveEntry() == NULL);
}

// Test that navigating across a site boundary creates a new RenderViewHost
// with a new SiteInstance.  Going back should do the same.
TEST_F(TabContentsTest, CrossSiteBoundaries) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  int orig_rvh_delete_count = 0;
  orig_rvh->set_delete_counter(&orig_rvh_delete_count);
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Navigate to new site
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_TRUE(contents()->cross_navigation_pending());
  TestRenderViewHost* pending_rvh = contents()->pending_rvh();
  int pending_rvh_delete_count = 0;
  pending_rvh->set_delete_counter(&pending_rvh_delete_count);

  // Navigations should be suspended in pending_rvh until ShouldCloseACK.
  EXPECT_TRUE(pending_rvh->are_navigations_suspended());
  orig_rvh->SendShouldCloseACK(true);
  EXPECT_FALSE(pending_rvh->are_navigations_suspended());

  // DidNavigate from the pending page
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 1, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(pending_rvh, params2);
  SiteInstance* instance2 = contents()->GetSiteInstance();

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(pending_rvh, contents()->render_view_host());
  EXPECT_NE(instance1, instance2);
  EXPECT_TRUE(contents()->pending_rvh() == NULL);
  // We keep the original RVH around, swapped out.
  EXPECT_TRUE(contents()->render_manager_for_testing()->IsSwappedOut(orig_rvh));
  EXPECT_EQ(orig_rvh_delete_count, 0);

  // Going back should switch SiteInstances again.  The first SiteInstance is
  // stored in the NavigationEntry, so it should be the same as at the start.
  // We should use the same RVH as before, swapping it back in.
  controller().GoBack();
  TestRenderViewHost* goback_rvh = contents()->pending_rvh();
  EXPECT_EQ(orig_rvh, goback_rvh);
  EXPECT_TRUE(contents()->cross_navigation_pending());

  // Navigations should be suspended in goback_rvh until ShouldCloseACK.
  EXPECT_TRUE(goback_rvh->are_navigations_suspended());
  pending_rvh->SendShouldCloseACK(true);
  EXPECT_FALSE(goback_rvh->are_navigations_suspended());

  // DidNavigate from the back action
  contents()->TestDidNavigate(goback_rvh, params1);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(goback_rvh, contents()->render_view_host());
  EXPECT_EQ(instance1, contents()->GetSiteInstance());
  // The pending RVH should now be swapped out, not deleted.
  EXPECT_TRUE(contents()->render_manager_for_testing()->
      IsSwappedOut(pending_rvh));
  EXPECT_EQ(pending_rvh_delete_count, 0);

  // Close tab and ensure RVHs are deleted.
  DeleteContents();
  EXPECT_EQ(orig_rvh_delete_count, 1);
  EXPECT_EQ(pending_rvh_delete_count, 1);
}

// Test that navigating across a site boundary after a crash creates a new
// RVH without requiring a cross-site transition (i.e., PENDING state).
TEST_F(TabContentsTest, CrossSiteBoundariesAfterCrash) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  int orig_rvh_delete_count = 0;
  orig_rvh->set_delete_counter(&orig_rvh_delete_count);
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Crash the renderer.
  orig_rvh->set_render_view_created(false);

  // Navigate to new site.  We should not go into PENDING.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  TestRenderViewHost* new_rvh = rvh();
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_TRUE(contents()->pending_rvh() == NULL);
  EXPECT_NE(orig_rvh, new_rvh);
  EXPECT_EQ(orig_rvh_delete_count, 1);

  // DidNavigate from the new page
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 1, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(new_rvh, params2);
  SiteInstance* instance2 = contents()->GetSiteInstance();

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(new_rvh, rvh());
  EXPECT_NE(instance1, instance2);
  EXPECT_TRUE(contents()->pending_rvh() == NULL);

  // Close tab and ensure RVHs are deleted.
  DeleteContents();
  EXPECT_EQ(orig_rvh_delete_count, 1);
}

// Test that opening a new tab in the same SiteInstance and then navigating
// both tabs to a new site will place both tabs in a single SiteInstance.
TEST_F(TabContentsTest, NavigateTwoTabsCrossSite) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);

  // Open a new tab with the same SiteInstance, navigated to the same site.
  TestTabContents contents2(profile(), instance1);
  params1.page_id = 2;  // Need this since the site instance is the same (which
                        // is the scope of page IDs) and we want to consider
                        // this a new page.
  contents2.transition_cross_site = true;
  contents2.controller().LoadURL(url, GURL(), content::PAGE_TRANSITION_TYPED,
                                 std::string());
  contents2.TestDidNavigate(contents2.render_view_host(), params1);

  // Navigate first tab to a new site
  const GURL url2a("http://www.yahoo.com");
  controller().LoadURL(
      url2a, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  orig_rvh->SendShouldCloseACK(true);
  TestRenderViewHost* pending_rvh_a = contents()->pending_rvh();
  ViewHostMsg_FrameNavigate_Params params2a;
  InitNavigateParams(&params2a, 1, url2a, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(pending_rvh_a, params2a);
  SiteInstance* instance2a = contents()->GetSiteInstance();
  EXPECT_NE(instance1, instance2a);

  // Navigate second tab to the same site as the first tab
  const GURL url2b("http://mail.yahoo.com");
  contents2.controller().LoadURL(url2b, GURL(), content::PAGE_TRANSITION_TYPED,
                                 std::string());
  TestRenderViewHost* rvh2 =
      static_cast<TestRenderViewHost*>(contents2.render_view_host());
  rvh2->SendShouldCloseACK(true);
  TestRenderViewHost* pending_rvh_b = contents2.pending_rvh();
  EXPECT_TRUE(pending_rvh_b != NULL);
  EXPECT_TRUE(contents2.cross_navigation_pending());

  // NOTE(creis): We used to be in danger of showing a sad tab page here if the
  // second tab hadn't navigated somewhere first (bug 1145430).  That case is
  // now covered by the CrossSiteBoundariesAfterCrash test.

  ViewHostMsg_FrameNavigate_Params params2b;
  InitNavigateParams(&params2b, 2, url2b, content::PAGE_TRANSITION_TYPED);
  contents2.TestDidNavigate(pending_rvh_b, params2b);
  SiteInstance* instance2b = contents2.GetSiteInstance();
  EXPECT_NE(instance1, instance2b);

  // Both tabs should now be in the same SiteInstance.
  EXPECT_EQ(instance2a, instance2b);
}

// Tests that TabContents uses the current URL, not the SiteInstance's site, to
// determine whether a navigation is cross-site.
TEST_F(TabContentsTest, CrossSiteComparesAgainstCurrentPage) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);

  // Open a related tab to a second site.
  TestTabContents contents2(profile(), instance1);
  contents2.transition_cross_site = true;
  const GURL url2("http://www.yahoo.com");
  contents2.controller().LoadURL(url2, GURL(), content::PAGE_TRANSITION_TYPED,
                                 std::string());
  // The first RVH in contents2 isn't live yet, so we shortcut the cross site
  // pending.
  TestRenderViewHost* rvh2 = static_cast<TestRenderViewHost*>(
      contents2.render_view_host());
  EXPECT_FALSE(contents2.cross_navigation_pending());
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 2, url2, content::PAGE_TRANSITION_TYPED);
  contents2.TestDidNavigate(rvh2, params2);
  SiteInstance* instance2 = contents2.GetSiteInstance();
  EXPECT_NE(instance1, instance2);
  EXPECT_FALSE(contents2.cross_navigation_pending());

  // Simulate a link click in first tab to second site.  Doesn't switch
  // SiteInstances, because we don't intercept WebKit navigations.
  ViewHostMsg_FrameNavigate_Params params3;
  InitNavigateParams(&params3, 2, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params3);
  SiteInstance* instance3 = contents()->GetSiteInstance();
  EXPECT_EQ(instance1, instance3);
  EXPECT_FALSE(contents()->cross_navigation_pending());

  // Navigate to the new site.  Doesn't switch SiteInstancees, because we
  // compare against the current URL, not the SiteInstance's site.
  const GURL url3("http://mail.yahoo.com");
  controller().LoadURL(
      url3, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_FALSE(contents()->cross_navigation_pending());
  ViewHostMsg_FrameNavigate_Params params4;
  InitNavigateParams(&params4, 3, url3, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params4);
  SiteInstance* instance4 = contents()->GetSiteInstance();
  EXPECT_EQ(instance1, instance4);
}

// Test that the onbeforeunload and onunload handlers run when navigating
// across site boundaries.
TEST_F(TabContentsTest, CrossSiteUnloadHandlers) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Navigate to new site, but simulate an onbeforeunload denial.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_TRUE(orig_rvh->is_waiting_for_beforeunload_ack());
  orig_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, false));
  EXPECT_FALSE(orig_rvh->is_waiting_for_beforeunload_ack());
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Navigate again, but simulate an onbeforeunload approval.
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_TRUE(orig_rvh->is_waiting_for_beforeunload_ack());
  orig_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));
  EXPECT_FALSE(orig_rvh->is_waiting_for_beforeunload_ack());
  EXPECT_TRUE(contents()->cross_navigation_pending());
  TestRenderViewHost* pending_rvh = static_cast<TestRenderViewHost*>(
      contents()->pending_rvh());

  // We won't hear DidNavigate until the onunload handler has finished running.
  // (No way to simulate that here, but it involves a call from RDH to
  // TabContents::OnCrossSiteResponse.)

  // DidNavigate from the pending page
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 1, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(pending_rvh, params2);
  SiteInstance* instance2 = contents()->GetSiteInstance();
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(pending_rvh, rvh());
  EXPECT_NE(instance1, instance2);
  EXPECT_TRUE(contents()->pending_rvh() == NULL);
}

// Test that during a slow cross-site navigation, the original renderer can
// navigate to a different URL and have it displayed, canceling the slow
// navigation.
TEST_F(TabContentsTest, CrossSiteNavigationPreempted) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Navigate to new site, simulating an onbeforeunload approval.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_TRUE(orig_rvh->is_waiting_for_beforeunload_ack());
  orig_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));
  EXPECT_TRUE(contents()->cross_navigation_pending());

  // Suppose the original renderer navigates before the new one is ready.
  orig_rvh->SendNavigate(2, GURL("http://www.google.com/foo"));

  // Verify that the pending navigation is cancelled.
  EXPECT_FALSE(orig_rvh->is_waiting_for_beforeunload_ack());
  SiteInstance* instance2 = contents()->GetSiteInstance();
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, rvh());
  EXPECT_EQ(instance1, instance2);
  EXPECT_TRUE(contents()->pending_rvh() == NULL);
}

TEST_F(TabContentsTest, CrossSiteNavigationBackPreempted) {
  contents()->transition_cross_site = true;

  // Start with NTP, which gets a new RVH with WebUI bindings.
  const GURL url1("chrome://newtab");
  controller().LoadURL(
      url1, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  TestRenderViewHost* ntp_rvh = rvh();
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url1, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(ntp_rvh, params1);
  NavigationEntry* entry1 = controller().GetLastCommittedEntry();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(ntp_rvh, contents()->render_view_host());
  EXPECT_EQ(url1, entry1->url());
  EXPECT_EQ(instance1, entry1->site_instance());
  EXPECT_TRUE(ntp_rvh->enabled_bindings() & content::BINDINGS_POLICY_WEB_UI);

  // Navigate to new site.
  const GURL url2("http://www.google.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_TRUE(contents()->cross_navigation_pending());
  TestRenderViewHost* google_rvh = contents()->pending_rvh();

  // Simulate beforeunload approval.
  EXPECT_TRUE(ntp_rvh->is_waiting_for_beforeunload_ack());
  ntp_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));

  // DidNavigate from the pending page.
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 1, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(google_rvh, params2);
  NavigationEntry* entry2 = controller().GetLastCommittedEntry();
  SiteInstance* instance2 = contents()->GetSiteInstance();

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(google_rvh, contents()->render_view_host());
  EXPECT_NE(instance1, instance2);
  EXPECT_FALSE(contents()->pending_rvh());
  EXPECT_EQ(url2, entry2->url());
  EXPECT_EQ(instance2, entry2->site_instance());
  EXPECT_FALSE(google_rvh->enabled_bindings() &
      content::BINDINGS_POLICY_WEB_UI);

  // Navigate to third page on same site.
  const GURL url3("http://news.google.com");
  controller().LoadURL(
      url3, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_FALSE(contents()->cross_navigation_pending());
  ViewHostMsg_FrameNavigate_Params params3;
  InitNavigateParams(&params3, 2, url3, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(google_rvh, params3);
  NavigationEntry* entry3 = controller().GetLastCommittedEntry();
  SiteInstance* instance3 = contents()->GetSiteInstance();

  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(google_rvh, contents()->render_view_host());
  EXPECT_EQ(instance2, instance3);
  EXPECT_FALSE(contents()->pending_rvh());
  EXPECT_EQ(url3, entry3->url());
  EXPECT_EQ(instance3, entry3->site_instance());

  // Go back within the site.
  controller().GoBack();
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(entry2, controller().pending_entry());

  // Before that commits, go back again.
  controller().GoBack();
  EXPECT_TRUE(contents()->cross_navigation_pending());
  EXPECT_TRUE(contents()->pending_rvh());
  EXPECT_EQ(entry1, controller().pending_entry());

  // Simulate beforeunload approval.
  EXPECT_TRUE(google_rvh->is_waiting_for_beforeunload_ack());
  google_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));

  // DidNavigate from the first back. This aborts the second back's pending RVH.
  contents()->TestDidNavigate(google_rvh, params2);

  // We should commit this page and forget about the second back.
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_FALSE(controller().pending_entry());
  EXPECT_EQ(google_rvh, contents()->render_view_host());
  EXPECT_EQ(url2, controller().GetLastCommittedEntry()->url());

  // We should not have corrupted the NTP entry.
  EXPECT_EQ(instance3, entry3->site_instance());
  EXPECT_EQ(instance2, entry2->site_instance());
  EXPECT_EQ(instance1, entry1->site_instance());
  EXPECT_EQ(url1, entry1->url());
}

// Test that during a slow cross-site navigation, a sub-frame navigation in the
// original renderer will not cancel the slow navigation (bug 42029).
TEST_F(TabContentsTest, CrossSiteNavigationNotPreemptedByFrame) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Start navigating to new site.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());

  // Simulate a sub-frame navigation arriving and ensure the RVH is still
  // waiting for a before unload response.
  orig_rvh->SendNavigateWithTransition(1, GURL("http://google.com/frame"),
                                       content::PAGE_TRANSITION_AUTO_SUBFRAME);
  EXPECT_TRUE(orig_rvh->is_waiting_for_beforeunload_ack());

  // Now simulate the onbeforeunload approval and verify the navigation is
  // not canceled.
  orig_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));
  EXPECT_FALSE(orig_rvh->is_waiting_for_beforeunload_ack());
  EXPECT_TRUE(contents()->cross_navigation_pending());
}

// Test that a cross-site navigation is not preempted if the previous
// renderer sends a FrameNavigate message just before being told to stop.
// We should only preempt the cross-site navigation if the previous renderer
// has started a new navigation.  See http://crbug.com/79176.
TEST_F(TabContentsTest, CrossSiteNotPreemptedDuringBeforeUnload) {
  contents()->transition_cross_site = true;

  // Navigate to NTP URL.
  const GURL url("chrome://newtab");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  TestRenderViewHost* orig_rvh = rvh();
  EXPECT_FALSE(contents()->cross_navigation_pending());

  // Navigate to new site, with the beforeunload request in flight.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  TestRenderViewHost* pending_rvh = contents()->pending_rvh();
  EXPECT_TRUE(contents()->cross_navigation_pending());
  EXPECT_TRUE(orig_rvh->is_waiting_for_beforeunload_ack());

  // Suppose the first navigation tries to commit now, with a
  // ViewMsg_Stop in flight.  This should not cancel the pending navigation,
  // but it should act as if the beforeunload ack arrived.
  orig_rvh->SendNavigate(1, GURL("chrome://newtab"));
  EXPECT_TRUE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());
  EXPECT_FALSE(orig_rvh->is_waiting_for_beforeunload_ack());

  // The pending navigation should be able to commit successfully.
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 1, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(pending_rvh, params2);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(pending_rvh, contents()->render_view_host());
}

// Test that the original renderer cannot preempt a cross-site navigation once
// the unload request has been made.  At this point, the cross-site navigation
// is almost ready to be displayed, and the original renderer is only given a
// short chance to run an unload handler.  Prevents regression of bug 23942.
TEST_F(TabContentsTest, CrossSiteCantPreemptAfterUnload) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Navigate to new site, simulating an onbeforeunload approval.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  orig_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));
  EXPECT_TRUE(contents()->cross_navigation_pending());
  TestRenderViewHost* pending_rvh = static_cast<TestRenderViewHost*>(
      contents()->pending_rvh());

  // Simulate the pending renderer's response, which leads to an unload request
  // being sent to orig_rvh.
  contents()->render_manager_for_testing()->OnCrossSiteResponse(0, 0);

  // Suppose the original renderer navigates now, while the unload request is in
  // flight.  We should ignore it, wait for the unload ack, and let the pending
  // request continue.  Otherwise, the tab may close spontaneously or stop
  // responding to navigation requests.  (See bug 23942.)
  ViewHostMsg_FrameNavigate_Params params1a;
  InitNavigateParams(&params1a, 2, GURL("http://www.google.com/foo"),
                     content::PAGE_TRANSITION_TYPED);
  orig_rvh->SendNavigate(2, GURL("http://www.google.com/foo"));

  // Verify that the pending navigation is still in progress.
  EXPECT_TRUE(contents()->cross_navigation_pending());
  EXPECT_TRUE(contents()->pending_rvh() != NULL);

  // DidNavigate from the pending page should commit it.
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 1, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(pending_rvh, params2);
  SiteInstance* instance2 = contents()->GetSiteInstance();
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(pending_rvh, rvh());
  EXPECT_NE(instance1, instance2);
  EXPECT_TRUE(contents()->pending_rvh() == NULL);
}

// Test that a cross-site navigation that doesn't commit after the unload
// handler doesn't leave the tab in a stuck state.  http://crbug.com/88562.
TEST_F(TabContentsTest, CrossSiteNavigationCanceled) {
  contents()->transition_cross_site = true;
  TestRenderViewHost* orig_rvh = rvh();
  SiteInstance* instance1 = contents()->GetSiteInstance();

  // Navigate to URL.  First URL should use first RenderViewHost.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, contents()->render_view_host());

  // Navigate to new site, simulating an onbeforeunload approval.
  const GURL url2("http://www.yahoo.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  EXPECT_TRUE(orig_rvh->is_waiting_for_beforeunload_ack());
  orig_rvh->TestOnMessageReceived(ViewHostMsg_ShouldClose_ACK(0, true));
  EXPECT_TRUE(contents()->cross_navigation_pending());

  // Simulate swap out message when the response arrives.
  orig_rvh->set_is_swapped_out(true);

  // Suppose the navigation doesn't get a chance to commit, and the user
  // navigates in the current RVH's SiteInstance.
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());

  // Verify that the pending navigation is cancelled and the renderer is no
  // longer swapped out.
  EXPECT_FALSE(orig_rvh->is_waiting_for_beforeunload_ack());
  SiteInstance* instance2 = contents()->GetSiteInstance();
  EXPECT_FALSE(contents()->cross_navigation_pending());
  EXPECT_EQ(orig_rvh, rvh());
  EXPECT_FALSE(orig_rvh->is_swapped_out());
  EXPECT_EQ(instance1, instance2);
  EXPECT_TRUE(contents()->pending_rvh() == NULL);
}

// Test that NavigationEntries have the correct content state after going
// forward and back.  Prevents regression for bug 1116137.
TEST_F(TabContentsTest, NavigationEntryContentState) {
  TestRenderViewHost* orig_rvh = rvh();

  // Navigate to URL.  There should be no committed entry yet.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  NavigationEntry* entry = controller().GetLastCommittedEntry();
  EXPECT_TRUE(entry == NULL);

  // Committed entry should have content state after DidNavigate.
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  entry = controller().GetLastCommittedEntry();
  EXPECT_FALSE(entry->content_state().empty());

  // Navigate to same site.
  const GURL url2("http://images.google.com");
  controller().LoadURL(
      url2, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  entry = controller().GetLastCommittedEntry();
  EXPECT_FALSE(entry->content_state().empty());

  // Committed entry should have content state after DidNavigate.
  ViewHostMsg_FrameNavigate_Params params2;
  InitNavigateParams(&params2, 2, url2, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params2);
  entry = controller().GetLastCommittedEntry();
  EXPECT_FALSE(entry->content_state().empty());

  // Now go back.  Committed entry should still have content state.
  controller().GoBack();
  contents()->TestDidNavigate(orig_rvh, params1);
  entry = controller().GetLastCommittedEntry();
  EXPECT_FALSE(entry->content_state().empty());
}

// Test that NavigationEntries have the correct content state after opening
// a new window to about:blank.  Prevents regression for bug 1116137.
TEST_F(TabContentsTest, NavigationEntryContentStateNewWindow) {
  TestRenderViewHost* orig_rvh = rvh();

  // When opening a new window, it is navigated to about:blank internally.
  // Currently, this results in two DidNavigate events.
  const GURL url(chrome::kAboutBlankURL);
  ViewHostMsg_FrameNavigate_Params params1;
  InitNavigateParams(&params1, 1, url, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(orig_rvh, params1);
  contents()->TestDidNavigate(orig_rvh, params1);

  // Should have a content state here.
  NavigationEntry* entry = controller().GetLastCommittedEntry();
  EXPECT_FALSE(entry->content_state().empty());
}

// Tests to see that webkit preferences are properly loaded and copied over
// to a WebPreferences object.
TEST_F(TabContentsTest, WebKitPrefs) {
  WebPreferences webkit_prefs = contents()->TestGetWebkitPrefs();

  // These values have been overridden by the profile preferences.
  EXPECT_EQ("UTF-8", webkit_prefs.default_encoding);
  EXPECT_EQ(20, webkit_prefs.default_font_size);
  EXPECT_FALSE(webkit_prefs.text_areas_are_resizable);
  EXPECT_TRUE(webkit_prefs.uses_universal_detector);

  // These should still be the default values.
#if defined(OS_MACOSX)
  const char kDefaultFont[] = "Times";
#elif defined(OS_CHROMEOS)
  const char kDefaultFont[] = "Tinos";
#else
  const char kDefaultFont[] = "Times New Roman";
#endif
  EXPECT_EQ(ASCIIToUTF16(kDefaultFont), webkit_prefs.standard_font_family);
  EXPECT_TRUE(webkit_prefs.javascript_enabled);
}

////////////////////////////////////////////////////////////////////////////////
// Interstitial Tests
////////////////////////////////////////////////////////////////////////////////

// Test navigating to a page (with the navigation initiated from the browser,
// as when a URL is typed in the location bar) that shows an interstitial and
// creates a new navigation entry, then hiding it without proceeding.
TEST_F(TabContentsTest,
       ShowInterstitialFromBrowserWithNewNavigationDontProceed) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Initiate a browser navigation that will trigger the interstitial
  controller().LoadURL(GURL("http://www.evil.com"), GURL(),
                        content::PAGE_TRANSITION_TYPED, std::string());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // The interstitial should not show until its navigation has committed.
  EXPECT_FALSE(interstitial->is_showing());
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  // Let's commit the interstitial navigation.
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url2);

  // Now don't proceed.
  interstitial->DontProceed();
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url1);
  EXPECT_EQ(1, controller().entry_count());
}

// Test navigating to a page (with the navigation initiated from the renderer,
// as when clicking on a link in the page) that shows an interstitial and
// creates a new navigation entry, then hiding it without proceeding.
TEST_F(TabContentsTest,
       ShowInterstitiaFromRendererlWithNewNavigationDontProceed) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial (no pending entry, the interstitial would have been
  // triggered by clicking on a link).
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // The interstitial should not show until its navigation has committed.
  EXPECT_FALSE(interstitial->is_showing());
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  // Let's commit the interstitial navigation.
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url2);

  // Now don't proceed.
  interstitial->DontProceed();
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url1);
  EXPECT_EQ(1, controller().entry_count());
}

// Test navigating to a page that shows an interstitial without creating a new
// navigation entry (this happens when the interstitial is triggered by a
// sub-resource in the page), then hiding it without proceeding.
TEST_F(TabContentsTest, ShowInterstitialNoNewNavigationDontProceed) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), false, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // The interstitial should not show until its navigation has committed.
  EXPECT_FALSE(interstitial->is_showing());
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  // Let's commit the interstitial navigation.
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  // The URL specified to the interstitial should have been ignored.
  EXPECT_TRUE(entry->url() == url1);

  // Now don't proceed.
  interstitial->DontProceed();
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url1);
  EXPECT_EQ(1, controller().entry_count());
}

// Test navigating to a page (with the navigation initiated from the browser,
// as when a URL is typed in the location bar) that shows an interstitial and
// creates a new navigation entry, then proceeding.
TEST_F(TabContentsTest,
       ShowInterstitialFromBrowserNewNavigationProceed) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Initiate a browser navigation that will trigger the interstitial
  controller().LoadURL(GURL("http://www.evil.com"), GURL(),
                        content::PAGE_TRANSITION_TYPED, std::string());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // The interstitial should not show until its navigation has committed.
  EXPECT_FALSE(interstitial->is_showing());
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  // Let's commit the interstitial navigation.
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url2);

  // Then proceed.
  interstitial->Proceed();
  // The interstitial should show until the new navigation commits.
  ASSERT_FALSE(deleted);
  EXPECT_EQ(TestInterstitialPage::OKED, state);
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);

  // Simulate the navigation to the page, that's when the interstitial gets
  // hidden.
  GURL url3("http://www.thepage.com");
  rvh()->SendNavigate(2, url3);

  EXPECT_TRUE(deleted);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url3);

  EXPECT_EQ(2, controller().entry_count());
}

// Test navigating to a page (with the navigation initiated from the renderer,
// as when clicking on a link in the page) that shows an interstitial and
// creates a new navigation entry, then proceeding.
TEST_F(TabContentsTest,
       ShowInterstitialFromRendererNewNavigationProceed) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // The interstitial should not show until its navigation has committed.
  EXPECT_FALSE(interstitial->is_showing());
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  // Let's commit the interstitial navigation.
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url2);

  // Then proceed.
  interstitial->Proceed();
  // The interstitial should show until the new navigation commits.
  ASSERT_FALSE(deleted);
  EXPECT_EQ(TestInterstitialPage::OKED, state);
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);

  // Simulate the navigation to the page, that's when the interstitial gets
  // hidden.
  GURL url3("http://www.thepage.com");
  rvh()->SendNavigate(2, url3);

  EXPECT_TRUE(deleted);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url3);

  EXPECT_EQ(2, controller().entry_count());
}

// Test navigating to a page that shows an interstitial without creating a new
// navigation entry (this happens when the interstitial is triggered by a
// sub-resource in the page), then proceeding.
TEST_F(TabContentsTest, ShowInterstitialNoNewNavigationProceed) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), false, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // The interstitial should not show until its navigation has committed.
  EXPECT_FALSE(interstitial->is_showing());
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  // Let's commit the interstitial navigation.
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_TRUE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == interstitial);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  // The URL specified to the interstitial should have been ignored.
  EXPECT_TRUE(entry->url() == url1);

  // Then proceed.
  interstitial->Proceed();
  // Since this is not a new navigation, the previous page is dismissed right
  // away and shows the original page.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::OKED, state);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == url1);

  EXPECT_EQ(1, controller().entry_count());
}

// Test navigating to a page that shows an interstitial, then navigating away.
TEST_F(TabContentsTest, ShowInterstitialThenNavigate) {
  // Show interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, url);

  // While interstitial showing, navigate to a new URL.
  const GURL url2("http://www.yahoo.com");
  rvh()->SendNavigate(1, url2);

  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
}

// Test navigating to a page that shows an interstitial, then going back.
TEST_F(TabContentsTest, ShowInterstitialThenGoBack) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL interstitial_url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, interstitial_url,
                               &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(2, interstitial_url);

  // While the interstitial is showing, go back.
  controller().GoBack();
  rvh()->SendNavigate(1, url1);

  // Make sure we are back to the original page and that the interstitial is
  // gone.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry);
  EXPECT_EQ(url1.spec(), entry->url().spec());
}

// Test navigating to a page that shows an interstitial, has a renderer crash,
// and then goes back.
TEST_F(TabContentsTest, ShowInterstitialCrashRendererThenGoBack) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL interstitial_url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, interstitial_url,
                               &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(2, interstitial_url);

  // Crash the renderer
  rvh()->TestOnMessageReceived(
      ViewHostMsg_RenderViewGone(
          0, base::TERMINATION_STATUS_PROCESS_CRASHED, -1));

  // While the interstitial is showing, go back.
  controller().GoBack();
  rvh()->SendNavigate(1, url1);

  // Make sure we are back to the original page and that the interstitial is
  // gone.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry);
  EXPECT_EQ(url1.spec(), entry->url().spec());
}

// Test navigating to a page that shows an interstitial, has the renderer crash,
// and then navigates to the interstitial.
TEST_F(TabContentsTest, ShowInterstitialCrashRendererThenNavigate) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL interstitial_url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, interstitial_url,
                               &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();

  // Crash the renderer
  rvh()->TestOnMessageReceived(
      ViewHostMsg_RenderViewGone(
          0, base::TERMINATION_STATUS_PROCESS_CRASHED, -1));

  interstitial->TestDidNavigate(2, interstitial_url);
}

// Test navigating to a page that shows an interstitial, then close the tab.
TEST_F(TabContentsTest, ShowInterstitialThenCloseTab) {
  // Show interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, url);

  // Now close the tab.
  DeleteContents();
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
}

// Test that after Proceed is called and an interstitial is still shown, no more
// commands get executed.
TEST_F(TabContentsTest, ShowInterstitialProceedMultipleCommands) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, url2);

  // Run a command.
  EXPECT_EQ(0, interstitial->command_received_count());
  interstitial->TestDomOperationResponse("toto");
  EXPECT_EQ(1, interstitial->command_received_count());

  // Then proceed.
  interstitial->Proceed();
  ASSERT_FALSE(deleted);

  // While the navigation to the new page is pending, send other commands, they
  // should be ignored.
  interstitial->TestDomOperationResponse("hello");
  interstitial->TestDomOperationResponse("hi");
  EXPECT_EQ(1, interstitial->command_received_count());
}

// Test showing an interstitial while another interstitial is already showing.
TEST_F(TabContentsTest, ShowInterstitialOnInterstitial) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL start_url("http://www.google.com");
  rvh()->SendNavigate(1, start_url);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state1 =
      TestInterstitialPage::UNDECIDED;
  bool deleted1 = false;
  GURL url1("http://interstitial1");
  TestInterstitialPage* interstitial1 =
      new TestInterstitialPage(contents(), true, url1, &state1, &deleted1);
  TestInterstitialPageStateGuard state_guard1(interstitial1);
  interstitial1->Show();
  interstitial1->TestDidNavigate(1, url1);

  // Now show another interstitial.
  TestInterstitialPage::InterstitialState state2 =
      TestInterstitialPage::UNDECIDED;
  bool deleted2 = false;
  GURL url2("http://interstitial2");
  TestInterstitialPage* interstitial2 =
      new TestInterstitialPage(contents(), true, url2, &state2, &deleted2);
  TestInterstitialPageStateGuard state_guard2(interstitial2);
  interstitial2->Show();
  interstitial2->TestDidNavigate(1, url2);

  // Showing interstitial2 should have caused interstitial1 to go away.
  EXPECT_TRUE(deleted1);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state1);

  // Let's make sure interstitial2 is working as intended.
  ASSERT_FALSE(deleted2);
  EXPECT_EQ(TestInterstitialPage::UNDECIDED, state2);
  interstitial2->Proceed();
  GURL landing_url("http://www.thepage.com");
  rvh()->SendNavigate(2, landing_url);

  EXPECT_TRUE(deleted2);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == landing_url);
  EXPECT_EQ(2, controller().entry_count());
}

// Test showing an interstitial, proceeding and then navigating to another
// interstitial.
TEST_F(TabContentsTest, ShowInterstitialProceedShowInterstitial) {
  // Navigate to a page so we have a navigation entry in the controller.
  GURL start_url("http://www.google.com");
  rvh()->SendNavigate(1, start_url);
  EXPECT_EQ(1, controller().entry_count());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state1 =
      TestInterstitialPage::UNDECIDED;
  bool deleted1 = false;
  GURL url1("http://interstitial1");
  TestInterstitialPage* interstitial1 =
      new TestInterstitialPage(contents(), true, url1, &state1, &deleted1);
  TestInterstitialPageStateGuard state_guard1(interstitial1);
  interstitial1->Show();
  interstitial1->TestDidNavigate(1, url1);

  // Take action.  The interstitial won't be hidden until the navigation is
  // committed.
  interstitial1->Proceed();
  EXPECT_EQ(TestInterstitialPage::OKED, state1);

  // Now show another interstitial (simulating the navigation causing another
  // interstitial).
  TestInterstitialPage::InterstitialState state2 =
      TestInterstitialPage::UNDECIDED;
  bool deleted2 = false;
  GURL url2("http://interstitial2");
  TestInterstitialPage* interstitial2 =
      new TestInterstitialPage(contents(), true, url2, &state2, &deleted2);
  TestInterstitialPageStateGuard state_guard2(interstitial2);
  interstitial2->Show();
  interstitial2->TestDidNavigate(1, url2);

  // Showing interstitial2 should have caused interstitial1 to go away.
  EXPECT_TRUE(deleted1);

  // Let's make sure interstitial2 is working as intended.
  ASSERT_FALSE(deleted2);
  EXPECT_EQ(TestInterstitialPage::UNDECIDED, state2);
  interstitial2->Proceed();
  GURL landing_url("http://www.thepage.com");
  rvh()->SendNavigate(2, landing_url);

  EXPECT_TRUE(deleted2);
  EXPECT_FALSE(contents()->showing_interstitial_page());
  EXPECT_TRUE(contents()->interstitial_page() == NULL);
  NavigationEntry* entry = controller().GetActiveEntry();
  ASSERT_TRUE(entry != NULL);
  EXPECT_TRUE(entry->url() == landing_url);
  EXPECT_EQ(2, controller().entry_count());
}

// Test that navigating away from an interstitial while it's loading cause it
// not to show.
TEST_F(TabContentsTest, NavigateBeforeInterstitialShows) {
  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL interstitial_url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, interstitial_url,
                               &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();

  // Let's simulate a navigation initiated from the browser before the
  // interstitial finishes loading.
  const GURL url("http://www.google.com");
  controller().LoadURL(
      url, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  ASSERT_FALSE(deleted);
  EXPECT_FALSE(interstitial->is_showing());

  // Now let's make the interstitial navigation commit.
  interstitial->TestDidNavigate(1, interstitial_url);

  // After it loaded the interstitial should be gone.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
}

// Test that a new request to show an interstitial while an interstitial is
// pending does not cause problems. htp://crbug/29655 and htp://crbug/9442.
TEST_F(TabContentsTest, TwoQuickInterstitials) {
  GURL interstitial_url("http://interstitial");

  // Show a first interstitial.
  TestInterstitialPage::InterstitialState state1 =
      TestInterstitialPage::UNDECIDED;
  bool deleted1 = false;
  TestInterstitialPage* interstitial1 =
      new TestInterstitialPage(contents(), true, interstitial_url,
                               &state1, &deleted1);
  TestInterstitialPageStateGuard state_guard1(interstitial1);
  interstitial1->Show();

  // Show another interstitial on that same tab before the first one had time
  // to load.
  TestInterstitialPage::InterstitialState state2 =
      TestInterstitialPage::UNDECIDED;
  bool deleted2 = false;
  TestInterstitialPage* interstitial2 =
      new TestInterstitialPage(contents(), true, interstitial_url,
                               &state2, &deleted2);
  TestInterstitialPageStateGuard state_guard2(interstitial2);
  interstitial2->Show();

  // The first interstitial should have been closed and deleted.
  EXPECT_TRUE(deleted1);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state1);

  // The 2nd one should still be OK.
  ASSERT_FALSE(deleted2);
  EXPECT_EQ(TestInterstitialPage::UNDECIDED, state2);

  // Make the interstitial navigation commit it should be showing.
  interstitial2->TestDidNavigate(1, interstitial_url);
  EXPECT_EQ(interstitial2, contents()->interstitial_page());
}

// Test showing an interstitial and have its renderer crash.
TEST_F(TabContentsTest, InterstitialCrasher) {
  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  // Simulate a renderer crash before the interstitial is shown.
  interstitial->TestRenderViewGone(
      base::TERMINATION_STATUS_PROCESS_CRASHED, -1);
  // The interstitial should have been dismissed.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);

  // Now try again but this time crash the intersitial after it was shown.
  interstitial =
      new TestInterstitialPage(contents(), true, url, &state, &deleted);
  interstitial->Show();
  interstitial->TestDidNavigate(1, url);
  // Simulate a renderer crash.
  interstitial->TestRenderViewGone(
      base::TERMINATION_STATUS_PROCESS_CRASHED, -1);
  // The interstitial should have been dismissed.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
}

// Tests that showing an interstitial as a result of a browser initiated
// navigation while an interstitial is showing does not remove the pending
// entry (see http://crbug.com/9791).
TEST_F(TabContentsTest, NewInterstitialDoesNotCancelPendingEntry) {
  const char kUrl[] = "http://www.badguys.com/";
  const GURL kGURL(kUrl);

  // Start a navigation to a page
  contents()->controller().LoadURL(
      kGURL, GURL(), content::PAGE_TRANSITION_TYPED, std::string());

  // Simulate that navigation triggering an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, kGURL, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, kGURL);

  // Initiate a new navigation from the browser that also triggers an
  // interstitial.
  contents()->controller().LoadURL(
      kGURL, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  TestInterstitialPage::InterstitialState state2 =
      TestInterstitialPage::UNDECIDED;
  bool deleted2 = false;
  TestInterstitialPage* interstitial2 =
      new TestInterstitialPage(contents(), true, kGURL, &state, &deleted);
  TestInterstitialPageStateGuard state_guard2(interstitial2);
  interstitial2->Show();
  interstitial2->TestDidNavigate(1, kGURL);

  // Make sure we still have an entry.
  NavigationEntry* entry = contents()->controller().pending_entry();
  ASSERT_TRUE(entry);
  EXPECT_EQ(kUrl, entry->url().spec());

  // And that the first interstitial is gone, but not the second.
  EXPECT_TRUE(deleted);
  EXPECT_EQ(TestInterstitialPage::CANCELED, state);
  EXPECT_FALSE(deleted2);
  EXPECT_EQ(TestInterstitialPage::UNDECIDED, state2);
}

// Tests that Javascript messages are not shown while an interstitial is
// showing.
TEST_F(TabContentsTest, NoJSMessageOnInterstitials) {
  const char kUrl[] = "http://www.badguys.com/";
  const GURL kGURL(kUrl);

  // Start a navigation to a page
  contents()->controller().LoadURL(
      kGURL, GURL(), content::PAGE_TRANSITION_TYPED, std::string());
  // DidNavigate from the page
  ViewHostMsg_FrameNavigate_Params params;
  InitNavigateParams(&params, 1, kGURL, content::PAGE_TRANSITION_TYPED);
  contents()->TestDidNavigate(rvh(), params);

  // Simulate showing an interstitial while the page is showing.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, kGURL, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, kGURL);

  // While the interstitial is showing, let's simulate the hidden page
  // attempting to show a JS message.
  IPC::Message* dummy_message = new IPC::Message;
  bool did_suppress_message = false;
  contents()->RunJavaScriptMessage(contents()->render_view_host(),
      ASCIIToUTF16("This is an informative message"), ASCIIToUTF16("OK"),
      kGURL, ui::MessageBoxFlags::kIsJavascriptAlert, dummy_message,
      &did_suppress_message);
  EXPECT_TRUE(did_suppress_message);
}

// Makes sure that if the source passed to CopyStateFromAndPrune has an
// interstitial it isn't copied over to the destination.
TEST_F(TabContentsTest, CopyStateFromAndPruneSourceInterstitial) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  rvh()->SendNavigate(1, url1);
  EXPECT_EQ(1, controller().entry_count());

  // Initiate a browser navigation that will trigger the interstitial
  controller().LoadURL(GURL("http://www.evil.com"), GURL(),
                        content::PAGE_TRANSITION_TYPED, std::string());

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url2("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(contents(), true, url2, &state, &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, url2);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_EQ(2, controller().entry_count());

  // Create another NavigationController.
  GURL url3("http://foo2");
  scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
  NavigationController& other_controller = other_contents->controller();
  other_contents->NavigateAndCommit(url3);
  other_contents->ExpectSetHistoryLengthAndPrune(
      other_controller.GetEntryAtIndex(0)->site_instance(), 1,
      other_controller.GetEntryAtIndex(0)->page_id());
  other_controller.CopyStateFromAndPrune(&controller());

  // The merged controller should only have two entries: url1 and url2.
  ASSERT_EQ(2, other_controller.entry_count());
  EXPECT_EQ(1, other_controller.GetCurrentEntryIndex());
  EXPECT_EQ(url1, other_controller.GetEntryAtIndex(0)->url());
  EXPECT_EQ(url3, other_controller.GetEntryAtIndex(1)->url());

  // And the merged controller shouldn't be showing an interstitial.
  EXPECT_FALSE(other_contents->showing_interstitial_page());
}

// Makes sure that CopyStateFromAndPrune does the right thing if the object
// CopyStateFromAndPrune is invoked on is showing an interstitial.
TEST_F(TabContentsTest, CopyStateFromAndPruneTargetInterstitial) {
  // Navigate to a page.
  GURL url1("http://www.google.com");
  contents()->NavigateAndCommit(url1);

  // Create another NavigationController.
  scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
  NavigationController& other_controller = other_contents->controller();

  // Navigate it to url2.
  GURL url2("http://foo2");
  other_contents->NavigateAndCommit(url2);

  // Show an interstitial.
  TestInterstitialPage::InterstitialState state =
      TestInterstitialPage::UNDECIDED;
  bool deleted = false;
  GURL url3("http://interstitial");
  TestInterstitialPage* interstitial =
      new TestInterstitialPage(other_contents.get(), true, url3, &state,
                               &deleted);
  TestInterstitialPageStateGuard state_guard(interstitial);
  interstitial->Show();
  interstitial->TestDidNavigate(1, url3);
  EXPECT_TRUE(interstitial->is_showing());
  EXPECT_EQ(2, other_controller.entry_count());
  other_contents->ExpectSetHistoryLengthAndPrune(
      other_controller.GetEntryAtIndex(0)->site_instance(), 1,
      other_controller.GetEntryAtIndex(0)->page_id());
  other_controller.CopyStateFromAndPrune(&controller());

  // The merged controller should only have two entries: url1 and url2.
  ASSERT_EQ(2, other_controller.entry_count());
  EXPECT_EQ(1, other_controller.GetCurrentEntryIndex());
  EXPECT_EQ(url1, other_controller.GetEntryAtIndex(0)->url());
  EXPECT_EQ(url3, other_controller.GetEntryAtIndex(1)->url());

  // It should have a transient entry.
  EXPECT_TRUE(other_controller.GetTransientEntry());

  // And the interstitial should be showing.
  EXPECT_TRUE(other_contents->showing_interstitial_page());

  // And the interstitial should do a reload on don't proceed.
  EXPECT_TRUE(other_contents->interstitial_page()->reload_on_dont_proceed());
}