chrome/browser/errorpage_browsertest.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/bind.h"
   6 #include "base/command_line.h"
   7 #include "base/compiler_specific.h"
   8 #include "base/logging.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/path_service.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "base/strings/stringprintf.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/synchronization/lock.h"
  16 #include "chrome/browser/browsing_data/browsing_data_helper.h"
  17 #include "chrome/browser/browsing_data/browsing_data_remover.h"
  18 #include "chrome/browser/net/url_request_mock_util.h"
  19 #include "chrome/browser/profiles/profile.h"
  20 #include "chrome/browser/search_engines/ui_thread_search_terms_data.h"
  21 #include "chrome/browser/ui/browser.h"
  22 #include "chrome/browser/ui/browser_commands.h"
  23 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  24 #include "chrome/common/chrome_paths.h"
  25 #include "chrome/common/chrome_switches.h"
  26 #include "chrome/common/pref_names.h"
  27 #include "chrome/grit/generated_resources.h"
  28 #include "chrome/test/base/in_process_browser_test.h"
  29 #include "chrome/test/base/ui_test_utils.h"
  30 #include "components/google/core/browser/google_util.h"
  31 #include "content/public/browser/browser_thread.h"
  32 #include "content/public/browser/notification_service.h"
  33 #include "content/public/browser/notification_types.h"
  34 #include "content/public/browser/render_frame_host.h"
  35 #include "content/public/browser/render_view_host.h"
  36 #include "content/public/browser/web_contents.h"
  37 #include "content/public/browser/web_contents_observer.h"
  38 #include "content/public/test/browser_test_utils.h"
  39 #include "content/public/test/test_navigation_observer.h"
  40 #include "net/base/net_errors.h"
  41 #include "net/base/net_util.h"
  42 #include "net/http/failing_http_transaction_factory.h"
  43 #include "net/http/http_cache.h"
  44 #include "net/test/spawned_test_server/spawned_test_server.h"
  45 #include "net/test/url_request/url_request_failed_job.h"
  46 #include "net/test/url_request/url_request_mock_http_job.h"
  47 #include "net/url_request/url_request_context.h"
  48 #include "net/url_request/url_request_context_getter.h"
  49 #include "net/url_request/url_request_filter.h"
  50 #include "net/url_request/url_request_interceptor.h"
  51 #include "net/url_request/url_request_job.h"
  52 #include "net/url_request/url_request_test_job.h"
  53 #include "net/url_request/url_request_test_util.h"
  54 #include "ui/base/l10n/l10n_util.h"
  55
  56 #if defined(OS_CHROMEOS)
  57 #include "chrome/browser/browser_process.h"
  58 #include "chrome/browser/chromeos/chrome_browser_main_chromeos.h"
  59 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
  60 #include "chrome/browser/chromeos/policy/stub_enterprise_install_attributes.h"
  61 #include "chrome/grit/generated_resources.h"
  62 #include "components/policy/core/common/mock_configuration_policy_provider.h"
  63 #include "components/policy/core/common/policy_types.h"
  64 #include "content/public/test/browser_test_utils.h"
  65 #include "ui/base/l10n/l10n_util.h"
  66 #endif
  67
  68 using content::BrowserThread;
  69 using content::NavigationController;
  70 using net::URLRequestFailedJob;
  71 using net::URLRequestTestJob;
  72
  73 namespace {
  74
  75 // Returns true if |text| is displayed on the page |browser| is currently
  76 // displaying.  Uses "innerText", so will miss hidden text, and whitespace
  77 // space handling may be weird.
  78 bool WARN_UNUSED_RESULT IsDisplayingText(Browser* browser,
  79                                          const std::string& text) {
  80   std::string command = base::StringPrintf(
  81       "var textContent = document.body.innerText;"
  82       "var hasText = textContent.indexOf('%s') >= 0;"
  83       "domAutomationController.send(hasText);",
  84       text.c_str());
  85   bool result = false;
  86   EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
  87       browser->tab_strip_model()->GetActiveWebContents(), command, &result));
  88   return result;
  89 }
  90
  91 // Expands the more box on the currently displayed error page.
  92 void ToggleHelpBox(Browser* browser) {
  93   EXPECT_TRUE(content::ExecuteScript(
  94       browser->tab_strip_model()->GetActiveWebContents(),
  95       "document.getElementById('details-button').click();"));
  96 }
  97
  98 // Returns true if |browser| is displaying the text representation of
  99 // |error_code| on the current page.
 100 bool WARN_UNUSED_RESULT IsDisplayingNetError(Browser* browser,
 101                                              net::Error error_code) {
 102   return IsDisplayingText(browser, net::ErrorToShortString(error_code));
 103 }
 104
 105 // Checks that the local error page is being displayed, without remotely
 106 // retrieved navigation corrections, and with the specified error code.
 107 void ExpectDisplayingLocalErrorPage(Browser* browser, net::Error error_code) {
 108   // Expand the help box so innerText will include text below the fold.
 109   ToggleHelpBox(browser);
 110
 111   EXPECT_TRUE(IsDisplayingNetError(browser, error_code));
 112
 113   // Locally generated error pages should not have navigation corrections.
 114   EXPECT_FALSE(IsDisplayingText(browser, "http://correction1/"));
 115   EXPECT_FALSE(IsDisplayingText(browser, "http://correction2/"));
 116
 117   // Locally generated error pages should not have a populated search box.
 118   bool search_box_populated = false;
 119   ASSERT_TRUE(content::ExecuteScriptAndExtractBool(
 120       browser->tab_strip_model()->GetActiveWebContents(),
 121       "var searchText = document.getElementById('search-box').value;"
 122           "domAutomationController.send(searchText == 'search query');",
 123       &search_box_populated));
 124   EXPECT_FALSE(search_box_populated);
 125 }
 126
 127 // Checks that an error page with information retrieved from the navigation
 128 // correction service is being displayed, with the specified specified error
 129 // code.
 130 void ExpectDisplayingNavigationCorrections(Browser* browser,
 131                                            net::Error error_code) {
 132   // Expand the help box so innerText will include text below the fold.
 133   ToggleHelpBox(browser);
 134
 135   EXPECT_TRUE(IsDisplayingNetError(browser, error_code));
 136
 137   // Check that the mock navigation corrections are displayed.
 138   EXPECT_TRUE(IsDisplayingText(browser, "http://correction1/"));
 139   EXPECT_TRUE(IsDisplayingText(browser, "http://correction2/"));
 140
 141   // Check that the search box is populated correctly.
 142   bool search_box_populated = false;
 143   ASSERT_TRUE(content::ExecuteScriptAndExtractBool(
 144       browser->tab_strip_model()->GetActiveWebContents(),
 145       "var searchText = document.getElementById('search-box').value;"
 146           "domAutomationController.send(searchText == 'search query');",
 147       &search_box_populated));
 148   EXPECT_TRUE(search_box_populated);
 149 }
 150
 151 std::string GetShowSavedButtonLabel() {
 152   return l10n_util::GetStringUTF8(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY);
 153 }
 154
 155 void AddInterceptorForURL(
 156     const GURL& url,
 157     scoped_ptr<net::URLRequestInterceptor> handler) {
 158   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 159   net::URLRequestFilter::GetInstance()->AddUrlInterceptor(
 160       url, handler.Pass());
 161 }
 162
 163 // An interceptor that fails a configurable number of requests, then succeeds
 164 // all requests after that, keeping count of failures and successes.
 165 class FailFirstNRequestsInterceptor : public net::URLRequestInterceptor {
 166  public:
 167   explicit FailFirstNRequestsInterceptor(int requests_to_fail)
 168       : requests_(0), failures_(0), requests_to_fail_(requests_to_fail) {}
 169   ~FailFirstNRequestsInterceptor() override {}
 170
 171   // net::URLRequestInterceptor implementation
 172   net::URLRequestJob* MaybeInterceptRequest(
 173       net::URLRequest* request,
 174       net::NetworkDelegate* network_delegate) const override {
 175     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 176     requests_++;
 177     if (failures_ < requests_to_fail_) {
 178       failures_++;
 179       // Note: net::ERR_CONNECTION_RESET does not summon the Link Doctor; see
 180       // NetErrorHelperCore::GetErrorPageURL.
 181       return new URLRequestFailedJob(request,
 182                                      network_delegate,
 183                                      net::ERR_CONNECTION_RESET);
 184     } else {
 185       return new URLRequestTestJob(request, network_delegate,
 186                                    URLRequestTestJob::test_headers(),
 187                                    URLRequestTestJob::test_data_1(),
 188                                    true);
 189     }
 190   }
 191
 192   int requests() const { return requests_; }
 193   int failures() const { return failures_; }
 194
 195  private:
 196   // These are mutable because MaybeCreateJob is const but we want this state
 197   // for testing.
 198   mutable int requests_;
 199   mutable int failures_;
 200   int requests_to_fail_;
 201
 202   DISALLOW_COPY_AND_ASSIGN(FailFirstNRequestsInterceptor);
 203 };
 204
 205 // An interceptor that serves LinkDoctor responses.  It also allows waiting
 206 // until a certain number of requests have been sent.
 207 // TODO(mmenke):  Wait until responses have been received instead.
 208 class LinkDoctorInterceptor : public net::URLRequestInterceptor {
 209  public:
 210   LinkDoctorInterceptor() : num_requests_(0),
 211                             requests_to_wait_for_(-1),
 212                             weak_factory_(this) {
 213   }
 214
 215   ~LinkDoctorInterceptor() override {}
 216
 217   // net::URLRequestInterceptor implementation
 218   net::URLRequestJob* MaybeInterceptRequest(
 219       net::URLRequest* request,
 220       net::NetworkDelegate* network_delegate) const override {
 221     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 222
 223     BrowserThread::PostTask(
 224         BrowserThread::UI, FROM_HERE,
 225         base::Bind(&LinkDoctorInterceptor::RequestCreated,
 226                    weak_factory_.GetWeakPtr()));
 227
 228     base::FilePath root_http;
 229     PathService::Get(chrome::DIR_TEST_DATA, &root_http);
 230     return new net::URLRequestMockHTTPJob(
 231         request,
 232         network_delegate,
 233         root_http.AppendASCII("mock-link-doctor.json"),
 234         BrowserThread::GetBlockingPool()->GetTaskRunnerWithShutdownBehavior(
 235             base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
 236   }
 237
 238   void WaitForRequests(int requests_to_wait_for) {
 239     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 240     DCHECK_EQ(-1, requests_to_wait_for_);
 241     DCHECK(!run_loop_);
 242
 243     if (requests_to_wait_for >= num_requests_)
 244       return;
 245
 246     requests_to_wait_for_ = requests_to_wait_for;
 247     run_loop_.reset(new base::RunLoop());
 248     run_loop_->Run();
 249     run_loop_.reset();
 250     requests_to_wait_for_ = -1;
 251     EXPECT_EQ(num_requests_, requests_to_wait_for);
 252   }
 253
 254   // It is up to the caller to wait until all relevant requests has been
 255   // created, either through calling WaitForRequests or some other manner,
 256   // before calling this method.
 257   int num_requests() const {
 258     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 259     return num_requests_;
 260   }
 261
 262  private:
 263   void RequestCreated() {
 264     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 265
 266     num_requests_++;
 267     if (num_requests_ == requests_to_wait_for_)
 268       run_loop_->Quit();
 269   }
 270
 271   // These are only used on the UI thread.
 272   int num_requests_;
 273   int requests_to_wait_for_;
 274   scoped_ptr<base::RunLoop> run_loop_;
 275
 276   // This prevents any risk of flake if any test doesn't wait for a request
 277   // it sent.  Mutable so it can be accessed from a const function.
 278   mutable base::WeakPtrFactory<LinkDoctorInterceptor> weak_factory_;
 279
 280   DISALLOW_COPY_AND_ASSIGN(LinkDoctorInterceptor);
 281 };
 282
 283 void InstallMockInterceptors(
 284     const GURL& search_url,
 285     scoped_ptr<net::URLRequestInterceptor> link_doctor_interceptor) {
 286   chrome_browser_net::SetUrlRequestMocksEnabled(true);
 287
 288   AddInterceptorForURL(google_util::LinkDoctorBaseURL(),
 289                        link_doctor_interceptor.Pass());
 290
 291   // Add a mock for the search engine the error page will use.
 292   base::FilePath root_http;
 293   PathService::Get(chrome::DIR_TEST_DATA, &root_http);
 294   net::URLRequestFilter::GetInstance()->AddHostnameInterceptor(
 295       search_url.scheme(), search_url.host(),
 296       net::URLRequestMockHTTPJob::CreateInterceptorForSingleFile(
 297           root_http.AppendASCII("title3.html"),
 298           BrowserThread::GetBlockingPool()));
 299 }
 300
 301 class ErrorPageTest : public InProcessBrowserTest {
 302  public:
 303   enum HistoryNavigationDirection {
 304     HISTORY_NAVIGATE_BACK,
 305     HISTORY_NAVIGATE_FORWARD,
 306   };
 307
 308   ErrorPageTest() : link_doctor_interceptor_(NULL) {}
 309   ~ErrorPageTest() override {}
 310
 311   // Navigates the active tab to a mock url created for the file at |file_path|.
 312   // Needed for StaleCacheStatus and StaleCacheStatusFailedCorrections tests.
 313   void SetUpCommandLine(base::CommandLine* command_line) override {
 314     command_line->AppendSwitchASCII(switches::kShowSavedCopy,
 315                                     switches::kEnableShowSavedCopyPrimary);
 316   }
 317
 318   // Navigates the active tab to a mock url created for the file at |file_path|.
 319   void NavigateToFileURL(const base::FilePath::StringType& file_path) {
 320     ui_test_utils::NavigateToURL(
 321         browser(),
 322         net::URLRequestMockHTTPJob::GetMockUrl(base::FilePath(file_path)));
 323   }
 324
 325   // Navigates to the given URL and waits for |num_navigations| to occur, and
 326   // the title to change to |expected_title|.
 327   void NavigateToURLAndWaitForTitle(const GURL& url,
 328                                     const std::string& expected_title,
 329                                     int num_navigations) {
 330     content::TitleWatcher title_watcher(
 331         browser()->tab_strip_model()->GetActiveWebContents(),
 332         base::ASCIIToUTF16(expected_title));
 333
 334     ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 335         browser(), url, num_navigations);
 336
 337     EXPECT_EQ(base::ASCIIToUTF16(expected_title),
 338               title_watcher.WaitAndGetTitle());
 339   }
 340
 341   // Navigates back in the history and waits for |num_navigations| to occur, and
 342   // the title to change to |expected_title|.
 343   void GoBackAndWaitForTitle(const std::string& expected_title,
 344                              int num_navigations) {
 345     NavigateHistoryAndWaitForTitle(expected_title,
 346                                    num_navigations,
 347                                    HISTORY_NAVIGATE_BACK);
 348   }
 349
 350   // Navigates forward in the history and waits for |num_navigations| to occur,
 351   // and the title to change to |expected_title|.
 352   void GoForwardAndWaitForTitle(const std::string& expected_title,
 353                                 int num_navigations) {
 354     NavigateHistoryAndWaitForTitle(expected_title,
 355                                    num_navigations,
 356                                    HISTORY_NAVIGATE_FORWARD);
 357   }
 358
 359   void GoBackAndWaitForNavigations(int num_navigations) {
 360     NavigateHistory(num_navigations, HISTORY_NAVIGATE_BACK);
 361   }
 362
 363   void GoForwardAndWaitForNavigations(int num_navigations) {
 364     NavigateHistory(num_navigations, HISTORY_NAVIGATE_FORWARD);
 365   }
 366
 367   // Confirms that the javascript variable indicating whether or not we have
 368   // a stale copy in the cache has been set to |expected|, and that the
 369   // stale load button is or isn't there based on the same expectation.
 370   testing::AssertionResult ProbeStaleCopyValue(bool expected) {
 371     const char* js_cache_probe =
 372         "try {\n"
 373         "    domAutomationController.send(\n"
 374         "        loadTimeData.valueExists('showSavedCopyButton') ?"
 375         "            'yes' : 'no');\n"
 376         "} catch (e) {\n"
 377         "    domAutomationController.send(e.message);\n"
 378         "}\n";
 379
 380     std::string result;
 381     bool ret =
 382         content::ExecuteScriptAndExtractString(
 383             browser()->tab_strip_model()->GetActiveWebContents(),
 384             js_cache_probe,
 385             &result);
 386     if (!ret) {
 387       return testing::AssertionFailure()
 388           << "Failing return from ExecuteScriptAndExtractString.";
 389     }
 390
 391     if ((expected && "yes" == result) || (!expected && "no" == result))
 392       return testing::AssertionSuccess();
 393
 394     return testing::AssertionFailure() << "Cache probe result is " << result;
 395   }
 396
 397   testing::AssertionResult ReloadStaleCopyFromCache() {
 398     const char* js_reload_script =
 399         "try {\n"
 400         "    document.getElementById('show-saved-copy-button').click();\n"
 401         "    domAutomationController.send('success');\n"
 402         "} catch (e) {\n"
 403         "    domAutomationController.send(e.message);\n"
 404         "}\n";
 405
 406     std::string result;
 407     bool ret = content::ExecuteScriptAndExtractString(
 408         browser()->tab_strip_model()->GetActiveWebContents(),
 409         js_reload_script,
 410         &result);
 411     EXPECT_TRUE(ret);
 412     if (!ret)
 413       return testing::AssertionFailure();
 414     return ("success" == result ? testing::AssertionSuccess() :
 415             (testing::AssertionFailure() << "Exception message is " << result));
 416   }
 417
 418   LinkDoctorInterceptor* link_doctor_interceptor() {
 419     return link_doctor_interceptor_;
 420   }
 421
 422  protected:
 423   void SetUpOnMainThread() override {
 424     link_doctor_interceptor_ = new LinkDoctorInterceptor();
 425     scoped_ptr<net::URLRequestInterceptor> owned_interceptor(
 426         link_doctor_interceptor_);
 427     // Ownership of the |interceptor_| is passed to an object the IO thread, but
 428     // a pointer is kept in the test fixture.  As soon as anything calls
 429     // URLRequestFilter::ClearHandlers(), |interceptor_| can become invalid.
 430     UIThreadSearchTermsData search_terms_data(browser()->profile());
 431     BrowserThread::PostTask(
 432         BrowserThread::IO, FROM_HERE,
 433         base::Bind(&InstallMockInterceptors,
 434                    GURL(search_terms_data.GoogleBaseURLValue()),
 435                    base::Passed(&owned_interceptor)));
 436   }
 437
 438   // Returns a GURL that results in a DNS error.
 439   GURL GetDnsErrorURL() const {
 440     return URLRequestFailedJob::GetMockHttpUrl(net::ERR_NAME_NOT_RESOLVED);
 441   }
 442
 443  private:
 444   // Navigates the browser the indicated direction in the history and waits for
 445   // |num_navigations| to occur and the title to change to |expected_title|.
 446   void NavigateHistoryAndWaitForTitle(const std::string& expected_title,
 447                                       int num_navigations,
 448                                       HistoryNavigationDirection direction) {
 449     content::TitleWatcher title_watcher(
 450         browser()->tab_strip_model()->GetActiveWebContents(),
 451         base::ASCIIToUTF16(expected_title));
 452
 453     NavigateHistory(num_navigations, direction);
 454
 455     EXPECT_EQ(title_watcher.WaitAndGetTitle(),
 456               base::ASCIIToUTF16(expected_title));
 457   }
 458
 459   void NavigateHistory(int num_navigations,
 460                        HistoryNavigationDirection direction) {
 461     content::TestNavigationObserver test_navigation_observer(
 462         browser()->tab_strip_model()->GetActiveWebContents(),
 463         num_navigations);
 464     if (direction == HISTORY_NAVIGATE_BACK) {
 465       chrome::GoBack(browser(), CURRENT_TAB);
 466     } else if (direction == HISTORY_NAVIGATE_FORWARD) {
 467       chrome::GoForward(browser(), CURRENT_TAB);
 468     } else {
 469       FAIL();
 470     }
 471     test_navigation_observer.Wait();
 472   }
 473
 474   LinkDoctorInterceptor* link_doctor_interceptor_;
 475 };
 476
 477 class TestFailProvisionalLoadObserver : public content::WebContentsObserver {
 478  public:
 479   explicit TestFailProvisionalLoadObserver(content::WebContents* contents)
 480       : content::WebContentsObserver(contents) {}
 481   ~TestFailProvisionalLoadObserver() override {}
 482
 483   // This method is invoked when the provisional load failed.
 484   void DidFailProvisionalLoad(
 485       content::RenderFrameHost* render_frame_host,
 486       const GURL& validated_url,
 487       int error_code,
 488       const base::string16& error_description) override {
 489     fail_url_ = validated_url;
 490   }
 491
 492   const GURL& fail_url() const { return fail_url_; }
 493
 494  private:
 495   GURL fail_url_;
 496
 497   DISALLOW_COPY_AND_ASSIGN(TestFailProvisionalLoadObserver);
 498 };
 499
 500 void InterceptNetworkTransactions(net::URLRequestContextGetter* getter,
 501                                   net::Error error) {
 502   DCHECK(content::BrowserThread::CurrentlyOn(BrowserThread::IO));
 503   net::HttpCache* cache(
 504       getter->GetURLRequestContext()->http_transaction_factory()->GetCache());
 505   DCHECK(cache);
 506   scoped_ptr<net::HttpTransactionFactory> factory(
 507       new net::FailingHttpTransactionFactory(cache->GetSession(), error));
 508   // Throw away old version; since this is a a browser test, we don't
 509   // need to restore the old state.
 510   cache->SetHttpNetworkTransactionFactoryForTesting(factory.Pass());
 511 }
 512
 513 // Test that a DNS error occuring in the main frame redirects to an error page.
 514 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_Basic) {
 515   // The first navigation should fail, and the second one should be the error
 516   // page.
 517   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 518        browser(), GetDnsErrorURL(), 2);
 519   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 520   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 521 }
 522
 523 // Test that a DNS error occuring in the main frame does not result in an
 524 // additional session history entry.
 525 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_GoBack1) {
 526   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 527   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 528        browser(), GetDnsErrorURL(), 2);
 529   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 530   GoBackAndWaitForTitle("Title Of Awesomeness", 1);
 531   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 532 }
 533
 534 // Test that a DNS error occuring in the main frame does not result in an
 535 // additional session history entry.
 536 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_GoBack2) {
 537   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 538
 539   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 540        browser(), GetDnsErrorURL(), 2);
 541   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 542   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 543
 544   NavigateToFileURL(FILE_PATH_LITERAL("title3.html"));
 545
 546   GoBackAndWaitForNavigations(2);
 547   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 548   EXPECT_EQ(2, link_doctor_interceptor()->num_requests());
 549
 550   GoBackAndWaitForTitle("Title Of Awesomeness", 1);
 551   EXPECT_EQ(2, link_doctor_interceptor()->num_requests());
 552 }
 553
 554 // Test that a DNS error occuring in the main frame does not result in an
 555 // additional session history entry.
 556 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_GoBack2AndForward) {
 557   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 558
 559   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 560        browser(), GetDnsErrorURL(), 2);
 561   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 562   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 563
 564   NavigateToFileURL(FILE_PATH_LITERAL("title3.html"));
 565
 566   GoBackAndWaitForNavigations(2);
 567   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 568   EXPECT_EQ(2, link_doctor_interceptor()->num_requests());
 569
 570   GoBackAndWaitForTitle("Title Of Awesomeness", 1);
 571
 572   GoForwardAndWaitForNavigations(2);
 573   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 574   EXPECT_EQ(3, link_doctor_interceptor()->num_requests());
 575 }
 576
 577 // Test that a DNS error occuring in the main frame does not result in an
 578 // additional session history entry.
 579 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_GoBack2Forward2) {
 580   NavigateToFileURL(FILE_PATH_LITERAL("title3.html"));
 581
 582   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 583        browser(), GetDnsErrorURL(), 2);
 584   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 585   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 586
 587   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 588
 589   GoBackAndWaitForNavigations(2);
 590   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 591   EXPECT_EQ(2, link_doctor_interceptor()->num_requests());
 592
 593   GoBackAndWaitForTitle("Title Of More Awesomeness", 1);
 594
 595   GoForwardAndWaitForNavigations(2);
 596   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 597   EXPECT_EQ(3, link_doctor_interceptor()->num_requests());
 598
 599   GoForwardAndWaitForTitle("Title Of Awesomeness", 1);
 600   EXPECT_EQ(3, link_doctor_interceptor()->num_requests());
 601 }
 602
 603 // Test that the search button on a DNS error page works.
 604 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_DoSearch) {
 605   // The first navigation should fail, and the second one should be the error
 606   // page.
 607   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 608        browser(), GetDnsErrorURL(), 2);
 609   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 610   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 611
 612   content::WebContents* web_contents =
 613       browser()->tab_strip_model()->GetActiveWebContents();
 614
 615   // Do a search and make sure the browser ends up at the right page.
 616   content::TestNavigationObserver nav_observer(web_contents, 1);
 617   content::TitleWatcher title_watcher(
 618       web_contents,
 619       base::ASCIIToUTF16("Title Of More Awesomeness"));
 620   // Can't use content::ExecuteScript because it waits for scripts to send
 621   // notification that they've run, and scripts that trigger a navigation may
 622   // not send that notification.
 623   web_contents->GetMainFrame()->ExecuteJavaScript(
 624       base::ASCIIToUTF16("document.getElementById('search-button').click();"));
 625   nav_observer.Wait();
 626   EXPECT_EQ(base::ASCIIToUTF16("Title Of More Awesomeness"),
 627             title_watcher.WaitAndGetTitle());
 628
 629   // There should have been another Link Doctor request, for tracking purposes.
 630   // Have to wait for it, since the search page does not depend on having
 631   // sent the tracking request.
 632   link_doctor_interceptor()->WaitForRequests(2);
 633   EXPECT_EQ(2, link_doctor_interceptor()->num_requests());
 634
 635   // Check the path and query string.
 636   std::string url;
 637   ASSERT_TRUE(content::ExecuteScriptAndExtractString(
 638                   browser()->tab_strip_model()->GetActiveWebContents(),
 639                   "domAutomationController.send(window.location.href);",
 640                   &url));
 641   EXPECT_EQ("/search", GURL(url).path());
 642   EXPECT_EQ("q=search%20query", GURL(url).query());
 643
 644   // Go back to the error page, to make sure the history is correct.
 645   GoBackAndWaitForNavigations(2);
 646   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 647   EXPECT_EQ(3, link_doctor_interceptor()->num_requests());
 648 }
 649
 650 // Test that the reload button on a DNS error page works.
 651 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_DoReload) {
 652   // The first navigation should fail, and the second one should be the error
 653   // page.
 654   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 655        browser(), GetDnsErrorURL(), 2);
 656   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 657   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 658
 659   content::WebContents* web_contents =
 660       browser()->tab_strip_model()->GetActiveWebContents();
 661
 662   // Clicking the reload button should load the error page again, and there
 663   // should be two commits, as before.
 664   content::TestNavigationObserver nav_observer(web_contents, 2);
 665   // Can't use content::ExecuteScript because it waits for scripts to send
 666   // notification that they've run, and scripts that trigger a navigation may
 667   // not send that notification.
 668   web_contents->GetMainFrame()->ExecuteJavaScript(
 669       base::ASCIIToUTF16("document.getElementById('reload-button').click();"));
 670   nav_observer.Wait();
 671   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 672
 673   // There should have two more requests to the correction service:  One for the
 674   // new error page, and one for tracking purposes.  Have to make sure to wait
 675   // for the tracking request, since the new error page does not depend on it.
 676   link_doctor_interceptor()->WaitForRequests(3);
 677   EXPECT_EQ(3, link_doctor_interceptor()->num_requests());
 678 }
 679
 680 // Test that clicking links on a DNS error page works.
 681 IN_PROC_BROWSER_TEST_F(ErrorPageTest, DNSError_DoClickLink) {
 682   // The first navigation should fail, and the second one should be the error
 683   // page.
 684   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 685        browser(), GetDnsErrorURL(), 2);
 686   ExpectDisplayingNavigationCorrections(browser(), net::ERR_NAME_NOT_RESOLVED);
 687   EXPECT_EQ(1, link_doctor_interceptor()->num_requests());
 688
 689   content::WebContents* web_contents =
 690       browser()->tab_strip_model()->GetActiveWebContents();
 691
 692   // Simulate a click on a link.
 693
 694   content::TitleWatcher title_watcher(
 695       web_contents,
 696       base::ASCIIToUTF16("Title Of Awesomeness"));
 697   std::string link_selector =
 698       "document.querySelector('a[href=\"http://mock.http/title2.html\"]')";
 699   // The tracking request is triggered by onmousedown, so it catches middle
 700   // mouse button clicks, as well as left clicks.
 701   web_contents->GetMainFrame()->ExecuteJavaScript(
 702       base::ASCIIToUTF16(link_selector + ".onmousedown();"));
 703   // Can't use content::ExecuteScript because it waits for scripts to send
 704   // notification that they've run, and scripts that trigger a navigation may
 705   // not send that notification.
 706   web_contents->GetMainFrame()->ExecuteJavaScript(
 707       base::ASCIIToUTF16(link_selector + ".click();"));
 708   EXPECT_EQ(base::ASCIIToUTF16("Title Of Awesomeness"),
 709             title_watcher.WaitAndGetTitle());
 710
 711   // There should have been a tracking request to the correction service.  Have
 712   // to make sure to wait the tracking request, since the new page does not
 713   // depend on it.
 714   link_doctor_interceptor()->WaitForRequests(2);
 715   EXPECT_EQ(2, link_doctor_interceptor()->num_requests());
 716 }
 717
 718 // Test that a DNS error occuring in an iframe does not result in showing
 719 // navigation corrections.
 720 IN_PROC_BROWSER_TEST_F(ErrorPageTest, IFrameDNSError_Basic) {
 721   NavigateToURLAndWaitForTitle(
 722       net::URLRequestMockHTTPJob::GetMockUrl(
 723           base::FilePath(FILE_PATH_LITERAL("iframe_dns_error.html"))),
 724       "Blah",
 725       1);
 726   // We expect to have two history entries, since we started off with navigation
 727   // to "about:blank" and then navigated to "iframe_dns_error.html".
 728   EXPECT_EQ(2,
 729       browser()->tab_strip_model()->GetActiveWebContents()->
 730           GetController().GetEntryCount());
 731   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 732 }
 733
 734 // This test fails regularly on win_rel trybots. See crbug.com/121540
 735 #if defined(OS_WIN)
 736 #define MAYBE_IFrameDNSError_GoBack DISABLED_IFrameDNSError_GoBack
 737 #else
 738 #define MAYBE_IFrameDNSError_GoBack IFrameDNSError_GoBack
 739 #endif
 740 // Test that a DNS error occuring in an iframe does not result in an
 741 // additional session history entry.
 742 IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_IFrameDNSError_GoBack) {
 743   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 744   NavigateToFileURL(FILE_PATH_LITERAL("iframe_dns_error.html"));
 745   GoBackAndWaitForTitle("Title Of Awesomeness", 1);
 746   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 747 }
 748
 749 // This test fails regularly on win_rel trybots. See crbug.com/121540
 750 //
 751 // This fails on linux_aura bringup: http://crbug.com/163931
 752 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA))
 753 #define MAYBE_IFrameDNSError_GoBackAndForward DISABLED_IFrameDNSError_GoBackAndForward
 754 #else
 755 #define MAYBE_IFrameDNSError_GoBackAndForward IFrameDNSError_GoBackAndForward
 756 #endif
 757 // Test that a DNS error occuring in an iframe does not result in an
 758 // additional session history entry.
 759 IN_PROC_BROWSER_TEST_F(ErrorPageTest, MAYBE_IFrameDNSError_GoBackAndForward) {
 760   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 761   NavigateToFileURL(FILE_PATH_LITERAL("iframe_dns_error.html"));
 762   GoBackAndWaitForTitle("Title Of Awesomeness", 1);
 763   GoForwardAndWaitForTitle("Blah", 1);
 764   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 765 }
 766
 767 // Test that a DNS error occuring in an iframe, once the main document is
 768 // completed loading, does not result in an additional session history entry.
 769 // To ensure that the main document has completed loading, JavaScript is used to
 770 // inject an iframe after loading is done.
 771 IN_PROC_BROWSER_TEST_F(ErrorPageTest, IFrameDNSError_JavaScript) {
 772   content::WebContents* wc =
 773       browser()->tab_strip_model()->GetActiveWebContents();
 774   GURL fail_url =
 775       URLRequestFailedJob::GetMockHttpUrl(net::ERR_NAME_NOT_RESOLVED);
 776
 777   // Load a regular web page, in which we will inject an iframe.
 778   NavigateToFileURL(FILE_PATH_LITERAL("title2.html"));
 779
 780   // We expect to have two history entries, since we started off with navigation
 781   // to "about:blank" and then navigated to "title2.html".
 782   EXPECT_EQ(2, wc->GetController().GetEntryCount());
 783
 784   std::string script = "var frame = document.createElement('iframe');"
 785                        "frame.src = '" + fail_url.spec() + "';"
 786                        "document.body.appendChild(frame);";
 787   {
 788     TestFailProvisionalLoadObserver fail_observer(wc);
 789     content::WindowedNotificationObserver load_observer(
 790         content::NOTIFICATION_LOAD_STOP,
 791         content::Source<NavigationController>(&wc->GetController()));
 792     wc->GetMainFrame()->ExecuteJavaScript(base::ASCIIToUTF16(script));
 793     load_observer.Wait();
 794
 795     // Ensure we saw the expected failure.
 796     EXPECT_EQ(fail_url, fail_observer.fail_url());
 797
 798     // Failed initial navigation of an iframe shouldn't be adding any history
 799     // entries.
 800     EXPECT_EQ(2, wc->GetController().GetEntryCount());
 801   }
 802
 803   // Do the same test, but with an iframe that doesn't have initial URL
 804   // assigned.
 805   script = "var frame = document.createElement('iframe');"
 806            "frame.id = 'target_frame';"
 807            "document.body.appendChild(frame);";
 808   {
 809     content::WindowedNotificationObserver load_observer(
 810         content::NOTIFICATION_LOAD_STOP,
 811         content::Source<NavigationController>(&wc->GetController()));
 812     wc->GetMainFrame()->ExecuteJavaScript(base::ASCIIToUTF16(script));
 813     load_observer.Wait();
 814   }
 815
 816   script = "var f = document.getElementById('target_frame');"
 817            "f.src = '" + fail_url.spec() + "';";
 818   {
 819     TestFailProvisionalLoadObserver fail_observer(wc);
 820     content::WindowedNotificationObserver load_observer(
 821         content::NOTIFICATION_LOAD_STOP,
 822         content::Source<NavigationController>(&wc->GetController()));
 823     wc->GetMainFrame()->ExecuteJavaScript(base::ASCIIToUTF16(script));
 824     load_observer.Wait();
 825
 826     EXPECT_EQ(fail_url, fail_observer.fail_url());
 827     EXPECT_EQ(2, wc->GetController().GetEntryCount());
 828   }
 829   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 830 }
 831
 832 // Checks that navigation corrections are not loaded when we receive an actual
 833 // 404 page.
 834 IN_PROC_BROWSER_TEST_F(ErrorPageTest, Page404) {
 835   NavigateToURLAndWaitForTitle(
 836       net::URLRequestMockHTTPJob::GetMockUrl(
 837           base::FilePath(FILE_PATH_LITERAL("page404.html"))),
 838       "SUCCESS",
 839       1);
 840   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 841 }
 842
 843 // Checks that when an error occurs, the stale cache status of the page
 844 // is correctly transferred, and that stale cached copied can be loaded
 845 // from the javascript.
 846 IN_PROC_BROWSER_TEST_F(ErrorPageTest, StaleCacheStatus) {
 847   ASSERT_TRUE(test_server()->Start());
 848   // Load cache with entry with "nocache" set, to create stale
 849   // cache.
 850   GURL test_url(test_server()->GetURL("files/nocache.html"));
 851   NavigateToURLAndWaitForTitle(test_url, "Nocache Test Page", 1);
 852
 853   // Reload same URL after forcing an error from the the network layer;
 854   // confirm that the error page is told the cached copy exists.
 855   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter =
 856       browser()->profile()->GetRequestContext();
 857   BrowserThread::PostTask(
 858       BrowserThread::IO, FROM_HERE,
 859       base::Bind(&InterceptNetworkTransactions, url_request_context_getter,
 860                  net::ERR_FAILED));
 861
 862   // With no navigation corrections to load, there's only one navigation.
 863   ui_test_utils::NavigateToURL(browser(), test_url);
 864   EXPECT_TRUE(ProbeStaleCopyValue(true));
 865   EXPECT_TRUE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
 866   EXPECT_NE(base::ASCIIToUTF16("Nocache Test Page"),
 867             browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
 868
 869   // Confirm that loading the stale copy from the cache works.
 870   content::TestNavigationObserver same_tab_observer(
 871       browser()->tab_strip_model()->GetActiveWebContents(), 1);
 872   ASSERT_TRUE(ReloadStaleCopyFromCache());
 873   same_tab_observer.Wait();
 874   EXPECT_EQ(base::ASCIIToUTF16("Nocache Test Page"),
 875             browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
 876
 877   // Reload the same URL with a post request; confirm the error page is told
 878   // that there is no cached copy.
 879   ui_test_utils::NavigateToURLWithPost(browser(), test_url);
 880   EXPECT_TRUE(ProbeStaleCopyValue(false));
 881   EXPECT_FALSE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
 882   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 883
 884   // Clear the cache and reload the same URL; confirm the error page is told
 885   // that there is no cached copy.
 886   BrowsingDataRemover* remover =
 887       BrowsingDataRemover::CreateForUnboundedRange(browser()->profile());
 888   remover->Remove(BrowsingDataRemover::REMOVE_CACHE,
 889                   BrowsingDataHelper::UNPROTECTED_WEB);
 890   ui_test_utils::NavigateToURL(browser(), test_url);
 891   EXPECT_TRUE(ProbeStaleCopyValue(false));
 892   EXPECT_FALSE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
 893   EXPECT_EQ(0, link_doctor_interceptor()->num_requests());
 894 }
 895
 896 // Check that the easter egg is present and initialised and is not disabled.
 897 IN_PROC_BROWSER_TEST_F(ErrorPageTest, CheckEasterEggIsNotDisabled) {
 898   ui_test_utils::NavigateToURL(browser(),
 899       URLRequestFailedJob::GetMockHttpUrl(net::ERR_INTERNET_DISCONNECTED));
 900
 901   content::WebContents* web_contents =
 902       browser()->tab_strip_model()->GetActiveWebContents();
 903
 904   // Check for no disabled message container.
 905   std::string command = base::StringPrintf(
 906       "var hasDisableContainer = document.querySelectorAll('.snackbar').length;"
 907       "domAutomationController.send(hasDisableContainer);");
 908   int result;
 909   EXPECT_TRUE(content::ExecuteScriptAndExtractInt(
 910                web_contents, command, &result));
 911   EXPECT_EQ(0, result);
 912
 913   // Presence of the canvas container.
 914   command = base::StringPrintf(
 915     "var runnerCanvas = document.querySelectorAll('.runner-canvas').length;"
 916     "domAutomationController.send(runnerCanvas);");
 917   EXPECT_TRUE(content::ExecuteScriptAndExtractInt(
 918                web_contents, command, &result));
 919   EXPECT_EQ(1, result);
 920 }
 921
 922 class ErrorPageAutoReloadTest : public InProcessBrowserTest {
 923  public:
 924   void SetUpCommandLine(base::CommandLine* command_line) override {
 925     command_line->AppendSwitch(switches::kEnableOfflineAutoReload);
 926   }
 927
 928   void InstallInterceptor(const GURL& url, int requests_to_fail) {
 929     interceptor_ = new FailFirstNRequestsInterceptor(requests_to_fail);
 930     scoped_ptr<net::URLRequestInterceptor> owned_interceptor(interceptor_);
 931
 932     // Tests don't need to wait for this task to complete before using the
 933     // filter; any requests that might be affected by it will end up in the IO
 934     // thread's message loop after this posted task anyway.
 935     //
 936     // Ownership of the interceptor is passed to an object the IO thread, but a
 937     // pointer is kept in the test fixture.  As soon as anything calls
 938     // URLRequestFilter::ClearHandlers(), |interceptor_| can become invalid.
 939     BrowserThread::PostTask(
 940         BrowserThread::IO, FROM_HERE,
 941         base::Bind(&AddInterceptorForURL, url,
 942                    base::Passed(&owned_interceptor)));
 943   }
 944
 945   void NavigateToURLAndWaitForTitle(const GURL& url,
 946                                     const std::string& expected_title,
 947                                     int num_navigations) {
 948     content::TitleWatcher title_watcher(
 949         browser()->tab_strip_model()->GetActiveWebContents(),
 950         base::ASCIIToUTF16(expected_title));
 951
 952     ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 953         browser(), url, num_navigations);
 954
 955     EXPECT_EQ(base::ASCIIToUTF16(expected_title),
 956               title_watcher.WaitAndGetTitle());
 957   }
 958
 959   FailFirstNRequestsInterceptor* interceptor() {
 960     return interceptor_;
 961   }
 962
 963  private:
 964   FailFirstNRequestsInterceptor* interceptor_;
 965 };
 966
 967 IN_PROC_BROWSER_TEST_F(ErrorPageAutoReloadTest, AutoReload) {
 968   GURL test_url("http://error.page.auto.reload");
 969   const int kRequestsToFail = 2;
 970   InstallInterceptor(test_url, kRequestsToFail);
 971   NavigateToURLAndWaitForTitle(test_url, "Test One", kRequestsToFail + 1);
 972   // Note that the interceptor updates these variables on the IO thread,
 973   // but this function reads them on the main thread. The requests have to be
 974   // created (on the IO thread) before NavigateToURLAndWaitForTitle returns or
 975   // this becomes racey.
 976   EXPECT_EQ(kRequestsToFail, interceptor()->failures());
 977   EXPECT_EQ(kRequestsToFail + 1, interceptor()->requests());
 978 }
 979
 980 IN_PROC_BROWSER_TEST_F(ErrorPageAutoReloadTest, ManualReloadNotSuppressed) {
 981   GURL test_url("http://error.page.auto.reload");
 982   const int kRequestsToFail = 3;
 983   InstallInterceptor(test_url, kRequestsToFail);
 984   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
 985       browser(), test_url, 2);
 986
 987   EXPECT_EQ(2, interceptor()->failures());
 988   EXPECT_EQ(2, interceptor()->requests());
 989
 990   ToggleHelpBox(browser());
 991   EXPECT_TRUE(IsDisplayingText(browser(), "error.page.auto.reload"));
 992
 993   content::WebContents* web_contents =
 994     browser()->tab_strip_model()->GetActiveWebContents();
 995   content::TestNavigationObserver nav_observer(web_contents, 1);
 996   web_contents->GetMainFrame()->ExecuteJavaScript(
 997       base::ASCIIToUTF16("document.getElementById('reload-button').click();"));
 998   nav_observer.Wait();
 999   EXPECT_FALSE(IsDisplayingText(browser(), "error.page.auto.reload"));
1000 }
1001
1002 // Interceptor that fails all requests with net::ERR_ADDRESS_UNREACHABLE.
1003 class AddressUnreachableInterceptor : public net::URLRequestInterceptor {
1004  public:
1005   AddressUnreachableInterceptor() {}
1006   ~AddressUnreachableInterceptor() override {}
1007
1008   // net::URLRequestInterceptor:
1009   net::URLRequestJob* MaybeInterceptRequest(
1010       net::URLRequest* request,
1011       net::NetworkDelegate* network_delegate) const override {
1012     return new URLRequestFailedJob(request,
1013                                    network_delegate,
1014                                    net::ERR_ADDRESS_UNREACHABLE);
1015   }
1016
1017  private:
1018   DISALLOW_COPY_AND_ASSIGN(AddressUnreachableInterceptor);
1019 };
1020
1021 // A test fixture that returns ERR_ADDRESS_UNREACHABLE for all navigation
1022 // correction requests.  ERR_NAME_NOT_RESOLVED is more typical, but need to use
1023 // a different error for the correction service and the original page to
1024 // validate the right page is being displayed.
1025 class ErrorPageNavigationCorrectionsFailTest : public ErrorPageTest {
1026  public:
1027   // InProcessBrowserTest:
1028   void SetUpOnMainThread() override {
1029     BrowserThread::PostTask(
1030         BrowserThread::IO, FROM_HERE,
1031         base::Bind(&ErrorPageNavigationCorrectionsFailTest::AddFilters));
1032   }
1033
1034   void TearDownOnMainThread() override {
1035     BrowserThread::PostTask(
1036         BrowserThread::IO, FROM_HERE,
1037         base::Bind(&ErrorPageNavigationCorrectionsFailTest::RemoveFilters));
1038   }
1039
1040  private:
1041   // Adds a filter that causes all correction service requests to fail with
1042   // ERR_ADDRESS_UNREACHABLE.
1043   //
1044   // Also adds the net::URLRequestFailedJob filter.
1045   static void AddFilters() {
1046     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
1047     URLRequestFailedJob::AddUrlHandler();
1048
1049     net::URLRequestFilter::GetInstance()->AddUrlInterceptor(
1050         google_util::LinkDoctorBaseURL(),
1051         scoped_ptr<net::URLRequestInterceptor>(
1052             new AddressUnreachableInterceptor()));
1053   }
1054
1055   static void RemoveFilters() {
1056     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
1057     net::URLRequestFilter::GetInstance()->ClearHandlers();
1058   }
1059 };
1060
1061 // Make sure that when corrections fail to load, the network error page is
1062 // successfully loaded.
1063 IN_PROC_BROWSER_TEST_F(ErrorPageNavigationCorrectionsFailTest,
1064                        FetchCorrectionsFails) {
1065   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
1066       browser(),
1067       URLRequestFailedJob::GetMockHttpUrl(net::ERR_NAME_NOT_RESOLVED),
1068       2);
1069
1070   // Verify that the expected error page is being displayed.
1071   ExpectDisplayingLocalErrorPage(browser(), net::ERR_NAME_NOT_RESOLVED);
1072 }
1073
1074 // Checks that when an error occurs and a corrections fail to load, the stale
1075 // cache status of the page is correctly transferred, and we can load the
1076 // stale copy from the javascript.  Most logic copied from StaleCacheStatus
1077 // above.
1078 IN_PROC_BROWSER_TEST_F(ErrorPageNavigationCorrectionsFailTest,
1079                        StaleCacheStatusFailedCorrections) {
1080   ASSERT_TRUE(test_server()->Start());
1081   // Load cache with entry with "nocache" set, to create stale
1082   // cache.
1083   GURL test_url(test_server()->GetURL("files/nocache.html"));
1084   NavigateToURLAndWaitForTitle(test_url, "Nocache Test Page", 1);
1085
1086   // Reload same URL after forcing an error from the the network layer;
1087   // confirm that the error page is told the cached copy exists.
1088   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter =
1089       browser()->profile()->GetRequestContext();
1090   BrowserThread::PostTask(
1091       BrowserThread::IO, FROM_HERE,
1092       base::Bind(&InterceptNetworkTransactions, url_request_context_getter,
1093                  net::ERR_CONNECTION_FAILED));
1094
1095   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
1096       browser(), test_url, 2);
1097   EXPECT_TRUE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
1098   EXPECT_TRUE(ProbeStaleCopyValue(true));
1099
1100   // Confirm that loading the stale copy from the cache works.
1101   content::TestNavigationObserver same_tab_observer(
1102       browser()->tab_strip_model()->GetActiveWebContents(), 1);
1103   ASSERT_TRUE(ReloadStaleCopyFromCache());
1104   same_tab_observer.Wait();
1105   EXPECT_EQ(base::ASCIIToUTF16("Nocache Test Page"),
1106             browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
1107
1108   // Clear the cache and reload the same URL; confirm the error page is told
1109   // that there is no cached copy.
1110   BrowsingDataRemover* remover =
1111       BrowsingDataRemover::CreateForUnboundedRange(browser()->profile());
1112   remover->Remove(BrowsingDataRemover::REMOVE_CACHE,
1113                   BrowsingDataHelper::UNPROTECTED_WEB);
1114   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
1115       browser(), test_url, 2);
1116   EXPECT_TRUE(ProbeStaleCopyValue(false));
1117   EXPECT_FALSE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
1118 }
1119
1120 #if defined(OS_CHROMEOS)
1121 class ErrorPageOfflineTest : public ErrorPageTest {
1122  protected:
1123   // Mock policy provider for both user and device policies.
1124   policy::MockConfigurationPolicyProvider policy_provider_;
1125
1126   void SetUpInProcessBrowserTestFixture() override {
1127     // Set up fake install attributes.
1128     scoped_ptr<policy::StubEnterpriseInstallAttributes> attributes(
1129         new policy::StubEnterpriseInstallAttributes());
1130     attributes->SetDomain("example.com");
1131     attributes->SetRegistrationUser("user@example.com");
1132     policy::BrowserPolicyConnectorChromeOS::SetInstallAttributesForTesting(
1133         attributes.release());
1134
1135     // Sets up a mock policy provider for user and device policies.
1136     EXPECT_CALL(policy_provider_, IsInitializationComplete(testing::_))
1137         .WillRepeatedly(testing::Return(true));
1138     policy::BrowserPolicyConnector::SetPolicyProviderForTesting(
1139         &policy_provider_);
1140
1141     ErrorPageTest::SetUpInProcessBrowserTestFixture();
1142   }
1143 };
1144
1145 IN_PROC_BROWSER_TEST_F(ErrorPageOfflineTest, CheckEasterEggIsDisabled) {
1146   // Check for enterprise enrollment.
1147   policy::BrowserPolicyConnectorChromeOS* connector =
1148       g_browser_process->platform_part()->browser_policy_connector_chromeos();
1149   EXPECT_TRUE(connector->IsEnterpriseManaged());
1150
1151   ui_test_utils::NavigateToURL(browser(),
1152       URLRequestFailedJob::GetMockHttpUrl(net::ERR_INTERNET_DISCONNECTED));
1153
1154   content::WebContents* web_contents =
1155       browser()->tab_strip_model()->GetActiveWebContents();
1156
1157   std::string command = base::StringPrintf(
1158       "var hasText = document.querySelector('.snackbar').innerText;"
1159       "domAutomationController.send(hasText);");
1160   std::string result = "";
1161   EXPECT_TRUE(content::ExecuteScriptAndExtractString(
1162                web_contents, command, &result));
1163
1164   std::string disabled_text =
1165       l10n_util::GetStringUTF8(IDS_ERRORPAGE_FUN_DISABLED);
1166   EXPECT_EQ(disabled_text, result);
1167 }
1168 #endif
1169
1170 // A test fixture that simulates failing requests for an IDN domain name.
1171 class ErrorPageForIDNTest : public InProcessBrowserTest {
1172  public:
1173   // Target hostname in different forms.
1174   static const char kHostname[];
1175   static const char kHostnameJSUnicode[];
1176
1177   // InProcessBrowserTest:
1178   void SetUpOnMainThread() override {
1179     // Clear AcceptLanguages to force punycode decoding.
1180     browser()->profile()->GetPrefs()->SetString(prefs::kAcceptLanguages,
1181                                                 std::string());
1182     BrowserThread::PostTask(
1183         BrowserThread::IO, FROM_HERE,
1184         base::Bind(&ErrorPageForIDNTest::AddFilters));
1185   }
1186
1187   void TearDownOnMainThread() override {
1188     BrowserThread::PostTask(
1189         BrowserThread::IO, FROM_HERE,
1190         base::Bind(&ErrorPageForIDNTest::RemoveFilters));
1191   }
1192
1193  private:
1194   static void AddFilters() {
1195     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
1196     URLRequestFailedJob::AddUrlHandlerForHostname(kHostname);
1197   }
1198
1199   static void RemoveFilters() {
1200     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
1201     net::URLRequestFilter::GetInstance()->ClearHandlers();
1202   }
1203 };
1204
1205 const char ErrorPageForIDNTest::kHostname[] =
1206     "xn--d1abbgf6aiiy.xn--p1ai";
1207 const char ErrorPageForIDNTest::kHostnameJSUnicode[] =
1208     "\\u043f\\u0440\\u0435\\u0437\\u0438\\u0434\\u0435\\u043d\\u0442."
1209     "\\u0440\\u0444";
1210
1211 // Make sure error page shows correct unicode for IDN.
1212 IN_PROC_BROWSER_TEST_F(ErrorPageForIDNTest, IDN) {
1213   // ERR_UNSAFE_PORT will not trigger navigation corrections.
1214   ui_test_utils::NavigateToURL(
1215       browser(),
1216       URLRequestFailedJob::GetMockHttpUrlForHostname(net::ERR_UNSAFE_PORT,
1217                                                      kHostname));
1218
1219   ToggleHelpBox(browser());
1220   EXPECT_TRUE(IsDisplayingText(browser(), kHostnameJSUnicode));
1221 }
1222
1223 }  // namespace