chrome/test/base/in_process_browser_test.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 "chrome/test/base/in_process_browser_test.h"
   6
   7 #include "base/auto_reset.h"
   8 #include "base/basictypes.h"
   9 #include "base/bind.h"
  10 #include "base/command_line.h"
  11 #include "base/files/file_path.h"
  12 #include "base/files/file_util.h"
  13 #include "base/lazy_instance.h"
  14 #include "base/location.h"
  15 #include "base/path_service.h"
  16 #include "base/single_thread_task_runner.h"
  17 #include "base/strings/string_number_conversions.h"
  18 #include "base/test/test_file_util.h"
  19 #include "base/thread_task_runner_handle.h"
  20 #include "base/threading/non_thread_safe.h"
  21 #include "chrome/browser/browser_process.h"
  22 #include "chrome/browser/chrome_notification_types.h"
  23 #include "chrome/browser/devtools/devtools_window.h"
  24 #include "chrome/browser/lifetime/application_lifetime.h"
  25 #include "chrome/browser/net/net_error_tab_helper.h"
  26 #include "chrome/browser/profiles/profile.h"
  27 #include "chrome/browser/profiles/profile_manager.h"
  28 #include "chrome/browser/ui/browser.h"
  29 #include "chrome/browser/ui/browser_commands.h"
  30 #include "chrome/browser/ui/browser_finder.h"
  31 #include "chrome/browser/ui/browser_list.h"
  32 #include "chrome/browser/ui/browser_list_observer.h"
  33 #include "chrome/browser/ui/browser_navigator.h"
  34 #include "chrome/browser/ui/browser_tabstrip.h"
  35 #include "chrome/browser/ui/browser_window.h"
  36 #include "chrome/browser/ui/host_desktop.h"
  37 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  38 #include "chrome/common/chrome_constants.h"
  39 #include "chrome/common/chrome_paths.h"
  40 #include "chrome/common/chrome_switches.h"
  41 #include "chrome/common/logging_chrome.h"
  42 #include "chrome/common/url_constants.h"
  43 #include "chrome/renderer/chrome_content_renderer_client.h"
  44 #include "chrome/test/base/chrome_test_suite.h"
  45 #include "chrome/test/base/test_launcher_utils.h"
  46 #include "chrome/test/base/test_switches.h"
  47 #include "chrome/test/base/testing_browser_process.h"
  48 #include "components/google/core/browser/google_util.h"
  49 #include "components/os_crypt/os_crypt.h"
  50 #include "content/public/browser/devtools_agent_host.h"
  51 #include "content/public/browser/notification_service.h"
  52 #include "content/public/browser/notification_types.h"
  53 #include "content/public/test/browser_test_utils.h"
  54 #include "content/public/test/test_launcher.h"
  55 #include "content/public/test/test_navigation_observer.h"
  56 #include "net/test/embedded_test_server/embedded_test_server.h"
  57 #include "net/test/spawned_test_server/spawned_test_server.h"
  58
  59 #if defined(OS_MACOSX)
  60 #include "base/mac/scoped_nsautorelease_pool.h"
  61 #include "chrome/test/base/scoped_bundle_swizzler_mac.h"
  62 #endif
  63
  64 #if defined(OS_WIN)
  65 #include "base/win/scoped_com_initializer.h"
  66 #include "base/win/windows_version.h"
  67 #include "ui/base/win/atl_module.h"
  68 #include "win8/test/metro_registration_helper.h"
  69 #include "win8/test/test_registrar_constants.h"
  70 #endif
  71
  72 #if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
  73 #include "chrome/browser/captive_portal/captive_portal_service.h"
  74 #endif
  75
  76 #if !defined(OS_ANDROID) && !defined(OS_IOS)
  77 #include "components/storage_monitor/test_storage_monitor.h"
  78 #endif
  79
  80 #if defined(OS_CHROMEOS)
  81 #include "chrome/browser/chromeos/input_method/input_method_configuration.h"
  82 #endif
  83
  84 namespace {
  85
  86 // Passed as value of kTestType.
  87 const char kBrowserTestType[] = "browser";
  88
  89 // A BrowserListObserver that makes sure that all browsers created are on the
  90 // |allowed_desktop_|.
  91 class SingleDesktopTestObserver : public chrome::BrowserListObserver,
  92                                   public base::NonThreadSafe {
  93  public:
  94   explicit SingleDesktopTestObserver(chrome::HostDesktopType allowed_desktop);
  95   ~SingleDesktopTestObserver() override;
  96
  97   // chrome::BrowserListObserver:
  98   void OnBrowserAdded(Browser* browser) override;
  99
 100  private:
 101   chrome::HostDesktopType allowed_desktop_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(SingleDesktopTestObserver);
 104 };
 105
 106 SingleDesktopTestObserver::SingleDesktopTestObserver(
 107     chrome::HostDesktopType allowed_desktop)
 108         : allowed_desktop_(allowed_desktop) {
 109   BrowserList::AddObserver(this);
 110 }
 111
 112 SingleDesktopTestObserver::~SingleDesktopTestObserver() {
 113   BrowserList::RemoveObserver(this);
 114 }
 115
 116 void SingleDesktopTestObserver::OnBrowserAdded(Browser* browser) {
 117   CHECK(CalledOnValidThread());
 118   CHECK_EQ(browser->host_desktop_type(), allowed_desktop_);
 119 }
 120
 121 }  // namespace
 122
 123 // Library used for testing accessibility.
 124 const base::FilePath::CharType kAXSTesting[] =
 125     FILE_PATH_LITERAL("third_party/accessibility-audit/axs_testing.js");
 126 // JavaScript snippet to configure and run the accessibility audit.
 127 const char kAccessibilityTestString[] =
 128     "var config = new axs.AuditConfiguration();"
 129     "/* Disable warning about rules that cannot be checked. */"
 130     "config.showUnsupportedRulesWarning = false;"
 131     "config.auditRulesToIgnore = ["
 132     "  /*"
 133     "   * The 'elements with meaningful background image' accessibility"
 134     "   * audit (AX_IMAGE_01) does not apply, since Chrome doesn't"
 135     "   * disable background images in high-contrast mode like some"
 136     "   * browsers do."
 137     "   */"
 138     "  'elementsWithMeaningfulBackgroundImage',"
 139     "  /*"
 140     "   * Most WebUI pages are inside an IFrame, so the 'web page should"
 141     "   * have a title that describes topic or purpose' test (AX_TITLE_01)"
 142     "   * generally does not apply."
 143     "   */"
 144     "  'pageWithoutTitle',"
 145     "  /*"
 146     "   * Enable when crbug.com/267035 is fixed."
 147     "   * Until then it's just noise."
 148     "   */"
 149     "  'lowContrastElements'"
 150     "];"
 151     "var result = axs.Audit.run(config);"
 152     "var error = '';"
 153     "for (var i = 0; i < result.length; ++i) {"
 154     "  if (result[i].result == axs.constants.AuditResult.FAIL) {"
 155     "    error = axs.Audit.createReport(result);"
 156     "    break;"
 157     "  }"
 158     "}"
 159     "domAutomationController.send(error);";
 160
 161 InProcessBrowserTest::InProcessBrowserTest()
 162     : browser_(NULL),
 163       exit_when_last_browser_closes_(true),
 164       open_about_blank_on_browser_launch_(true),
 165       multi_desktop_test_(false),
 166       run_accessibility_checks_for_test_case_(false)
 167 #if defined(OS_MACOSX)
 168       , autorelease_pool_(NULL)
 169 #endif  // OS_MACOSX
 170     {
 171 #if defined(OS_MACOSX)
 172   // TODO(phajdan.jr): Make browser_tests self-contained on Mac, remove this.
 173   // Before we run the browser, we have to hack the path to the exe to match
 174   // what it would be if Chrome was running, because it is used to fork renderer
 175   // processes, on Linux at least (failure to do so will cause a browser_test to
 176   // be run instead of a renderer).
 177   base::FilePath chrome_path;
 178   CHECK(PathService::Get(base::FILE_EXE, &chrome_path));
 179   chrome_path = chrome_path.DirName();
 180   chrome_path = chrome_path.Append(chrome::kBrowserProcessExecutablePath);
 181   CHECK(PathService::Override(base::FILE_EXE, chrome_path));
 182 #endif  // defined(OS_MACOSX)
 183
 184   CreateTestServer(base::FilePath(FILE_PATH_LITERAL("chrome/test/data")));
 185   base::FilePath src_dir;
 186   CHECK(PathService::Get(base::DIR_SOURCE_ROOT, &src_dir));
 187   base::FilePath test_data_dir = src_dir.AppendASCII("chrome/test/data");
 188   embedded_test_server()->ServeFilesFromDirectory(test_data_dir);
 189
 190   // chrome::DIR_TEST_DATA isn't going to be setup until after we call
 191   // ContentMain. However that is after tests' constructors or SetUp methods,
 192   // which sometimes need it. So just override it.
 193   CHECK(PathService::Override(chrome::DIR_TEST_DATA, test_data_dir));
 194
 195 #if defined(OS_MACOSX)
 196   bundle_swizzler_.reset(new ScopedBundleSwizzlerMac);
 197 #endif
 198 }
 199
 200 InProcessBrowserTest::~InProcessBrowserTest() {
 201 }
 202
 203 void InProcessBrowserTest::SetUp() {
 204   // Browser tests will create their own g_browser_process later.
 205   DCHECK(!g_browser_process);
 206
 207   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 208
 209   // Auto-reload breaks many browser tests, which assume error pages won't be
 210   // reloaded out from under them. Tests that expect or desire this behavior can
 211   // append switches::kEnableOfflineAutoReload, which will override the disable
 212   // here.
 213   command_line->AppendSwitch(switches::kDisableOfflineAutoReload);
 214
 215   // Allow subclasses to change the command line before running any tests.
 216   SetUpCommandLine(command_line);
 217   // Add command line arguments that are used by all InProcessBrowserTests.
 218   PrepareTestCommandLine(command_line);
 219
 220   // Create a temporary user data directory if required.
 221   ASSERT_TRUE(CreateUserDataDirectory())
 222       << "Could not create user data directory.";
 223
 224   // Allow subclasses the opportunity to make changes to the default user data
 225   // dir before running any tests.
 226   ASSERT_TRUE(SetUpUserDataDirectory())
 227       << "Could not set up user data directory.";
 228
 229 #if defined(OS_CHROMEOS)
 230   // Make sure that the log directory exists.
 231   base::FilePath log_dir = logging::GetSessionLogFile(*command_line).DirName();
 232   base::CreateDirectory(log_dir);
 233   // Disable IME extension loading to avoid many browser tests failures.
 234   chromeos::input_method::DisableExtensionLoading();
 235 #endif  // defined(OS_CHROMEOS)
 236
 237 #if defined(OS_MACOSX)
 238   // Always use the MockKeychain if OS encription is used (which is when
 239   // anything sensitive gets stored, including Cookies).  Without this,
 240   // many tests will hang waiting for a user to approve KeyChain access.
 241   OSCrypt::UseMockKeychain(true);
 242 #endif
 243
 244 #if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
 245   CaptivePortalService::set_state_for_testing(
 246       CaptivePortalService::DISABLED_FOR_TESTING);
 247 #endif
 248
 249   chrome_browser_net::NetErrorTabHelper::set_state_for_testing(
 250       chrome_browser_net::NetErrorTabHelper::TESTING_FORCE_DISABLED);
 251
 252   google_util::SetMockLinkDoctorBaseURLForTesting();
 253
 254 #if defined(OS_WIN)
 255   base::win::Version version = base::win::GetVersion();
 256   // Although Ash officially is only supported for users on Win7+, we still run
 257   // ash_unittests on Vista builders, so we still need to initialize COM.
 258   if (version >= base::win::VERSION_VISTA &&
 259       base::CommandLine::ForCurrentProcess()->HasSwitch(
 260           switches::kAshBrowserTests)) {
 261     com_initializer_.reset(new base::win::ScopedCOMInitializer());
 262     ui::win::CreateATLModuleIfNeeded();
 263     if (version >= base::win::VERSION_WIN8)
 264       ASSERT_TRUE(win8::MakeTestDefaultBrowserSynchronously());
 265   }
 266 #endif
 267
 268   BrowserTestBase::SetUp();
 269 }
 270
 271 void InProcessBrowserTest::PrepareTestCommandLine(
 272     base::CommandLine* command_line) {
 273   // Propagate commandline settings from test_launcher_utils.
 274   test_launcher_utils::PrepareBrowserCommandLineForTests(command_line);
 275
 276   // This is a Browser test.
 277   command_line->AppendSwitchASCII(switches::kTestType, kBrowserTestType);
 278
 279 #if defined(OS_WIN)
 280   if (command_line->HasSwitch(switches::kAshBrowserTests)) {
 281     command_line->AppendSwitchNative(switches::kViewerLaunchViaAppId,
 282                                      win8::test::kDefaultTestAppUserModelId);
 283     // Ash already launches with a single browser opened, add kSilentLaunch to
 284     // make sure StartupBrowserCreator doesn't attempt to launch a browser on
 285     // the native desktop on startup.
 286     command_line->AppendSwitch(switches::kSilentLaunch);
 287   }
 288 #endif
 289
 290 #if defined(OS_MACOSX)
 291   // Explicitly set the path of the binary used for child processes, otherwise
 292   // they'll try to use browser_tests which doesn't contain ChromeMain.
 293   base::FilePath subprocess_path;
 294   PathService::Get(base::FILE_EXE, &subprocess_path);
 295   // Recreate the real environment, run the helper within the app bundle.
 296   subprocess_path = subprocess_path.DirName().DirName();
 297   DCHECK_EQ(subprocess_path.BaseName().value(), "Contents");
 298   subprocess_path =
 299       subprocess_path.Append("Versions").Append(chrome::kChromeVersion);
 300   subprocess_path =
 301       subprocess_path.Append(chrome::kHelperProcessExecutablePath);
 302   command_line->AppendSwitchPath(switches::kBrowserSubprocessPath,
 303                                  subprocess_path);
 304 #endif
 305
 306   // TODO(pkotwicz): Investigate if we can remove this switch.
 307   if (exit_when_last_browser_closes_)
 308     command_line->AppendSwitch(switches::kDisableZeroBrowsersOpenForTests);
 309
 310   if (open_about_blank_on_browser_launch_ && command_line->GetArgs().empty())
 311     command_line->AppendArg(url::kAboutBlankURL);
 312 }
 313
 314 bool InProcessBrowserTest::RunAccessibilityChecks(std::string* error_message) {
 315   if (!browser()) {
 316     *error_message = "browser is NULL";
 317     return false;
 318   }
 319   auto tab_strip = browser()->tab_strip_model();
 320   if (!tab_strip) {
 321     *error_message = "tab_strip is NULL";
 322     return false;
 323   }
 324   auto web_contents = tab_strip->GetActiveWebContents();
 325   if (!web_contents) {
 326     *error_message = "web_contents is NULL";
 327     return false;
 328   }
 329   auto focused_frame = web_contents->GetFocusedFrame();
 330   if (!focused_frame) {
 331     *error_message = "focused_frame is NULL";
 332     return false;
 333   }
 334
 335   // Load accessibility library.
 336   base::FilePath src_dir;
 337   if (!PathService::Get(base::DIR_SOURCE_ROOT, &src_dir)) {
 338     *error_message = "PathService::Get failed";
 339     return false;
 340   }
 341   base::FilePath script_path = src_dir.Append(kAXSTesting);
 342   std::string script;
 343   if (!base::ReadFileToString(script_path, &script)) {
 344     *error_message = "Could not read accessibility library";
 345     return false;
 346   }
 347   if (!content::ExecuteScript(web_contents, script)) {
 348     *error_message = "Failed to load accessibility library";
 349     return false;
 350   }
 351
 352   // Run accessibility audit.
 353   if (!content::ExecuteScriptAndExtractString(focused_frame,
 354                                               kAccessibilityTestString,
 355                                               error_message)) {
 356     *error_message = "Failed to run accessibility audit";
 357     return false;
 358   }
 359
 360   // Test result should be empty if there are no errors.
 361   return error_message->empty();
 362 }
 363
 364 bool InProcessBrowserTest::CreateUserDataDirectory() {
 365   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 366   base::FilePath user_data_dir =
 367       command_line->GetSwitchValuePath(switches::kUserDataDir);
 368   if (user_data_dir.empty()) {
 369     if (temp_user_data_dir_.CreateUniqueTempDir() &&
 370         temp_user_data_dir_.IsValid()) {
 371       user_data_dir = temp_user_data_dir_.path();
 372     } else {
 373       LOG(ERROR) << "Could not create temporary user data directory \""
 374                  << temp_user_data_dir_.path().value() << "\".";
 375       return false;
 376     }
 377   }
 378   return test_launcher_utils::OverrideUserDataDir(user_data_dir);
 379 }
 380
 381 void InProcessBrowserTest::TearDown() {
 382   DCHECK(!g_browser_process);
 383 #if defined(OS_WIN)
 384   com_initializer_.reset();
 385 #endif
 386   BrowserTestBase::TearDown();
 387 }
 388
 389 void InProcessBrowserTest::CloseBrowserSynchronously(Browser* browser) {
 390   content::WindowedNotificationObserver observer(
 391       chrome::NOTIFICATION_BROWSER_CLOSED,
 392       content::Source<Browser>(browser));
 393   CloseBrowserAsynchronously(browser);
 394   observer.Wait();
 395 }
 396
 397 void InProcessBrowserTest::CloseBrowserAsynchronously(Browser* browser) {
 398   browser->window()->Close();
 399 #if defined(OS_MACOSX)
 400   // BrowserWindowController depends on the auto release pool being recycled
 401   // in the message loop to delete itself.
 402   AutoreleasePool()->Recycle();
 403 #endif
 404 }
 405
 406 void InProcessBrowserTest::CloseAllBrowsers() {
 407   chrome::CloseAllBrowsers();
 408 #if defined(OS_MACOSX)
 409   // BrowserWindowController depends on the auto release pool being recycled
 410   // in the message loop to delete itself.
 411   AutoreleasePool()->Recycle();
 412 #endif
 413 }
 414
 415 // TODO(alexmos): This function should expose success of the underlying
 416 // navigation to tests, which should make sure navigations succeed when
 417 // appropriate. See https://crbug.com/425335
 418 void InProcessBrowserTest::AddTabAtIndexToBrowser(
 419     Browser* browser,
 420     int index,
 421     const GURL& url,
 422     ui::PageTransition transition,
 423     bool check_navigation_success) {
 424   chrome::NavigateParams params(browser, url, transition);
 425   params.tabstrip_index = index;
 426   params.disposition = NEW_FOREGROUND_TAB;
 427   chrome::Navigate(&params);
 428
 429   if (check_navigation_success)
 430     content::WaitForLoadStop(params.target_contents);
 431   else
 432     content::WaitForLoadStopWithoutSuccessCheck(params.target_contents);
 433 }
 434
 435 void InProcessBrowserTest::AddTabAtIndex(
 436     int index,
 437     const GURL& url,
 438     ui::PageTransition transition) {
 439   AddTabAtIndexToBrowser(browser(), index, url, transition, true);
 440 }
 441
 442 bool InProcessBrowserTest::SetUpUserDataDirectory() {
 443   return true;
 444 }
 445
 446 #if !defined(OS_MACOSX)
 447 void InProcessBrowserTest::OpenDevToolsWindow(
 448     content::WebContents* web_contents) {
 449   ASSERT_FALSE(content::DevToolsAgentHost::HasFor(web_contents));
 450   DevToolsWindow::OpenDevToolsWindow(web_contents);
 451   ASSERT_TRUE(content::DevToolsAgentHost::HasFor(web_contents));
 452 }
 453
 454 Browser* InProcessBrowserTest::OpenURLOffTheRecord(Profile* profile,
 455                                                    const GURL& url) {
 456   chrome::HostDesktopType active_desktop = chrome::GetActiveDesktop();
 457   chrome::OpenURLOffTheRecord(profile, url, active_desktop);
 458   Browser* browser = chrome::FindTabbedBrowser(
 459       profile->GetOffTheRecordProfile(), false, active_desktop);
 460   content::TestNavigationObserver observer(
 461       browser->tab_strip_model()->GetActiveWebContents());
 462   observer.Wait();
 463   return browser;
 464 }
 465
 466 // Creates a browser with a single tab (about:blank), waits for the tab to
 467 // finish loading and shows the browser.
 468 Browser* InProcessBrowserTest::CreateBrowser(Profile* profile) {
 469   Browser* browser = new Browser(
 470       Browser::CreateParams(profile, chrome::GetActiveDesktop()));
 471   AddBlankTabAndShow(browser);
 472   return browser;
 473 }
 474
 475 Browser* InProcessBrowserTest::CreateIncognitoBrowser() {
 476   // Create a new browser with using the incognito profile.
 477   Browser* incognito = new Browser(
 478       Browser::CreateParams(browser()->profile()->GetOffTheRecordProfile(),
 479                             chrome::GetActiveDesktop()));
 480   AddBlankTabAndShow(incognito);
 481   return incognito;
 482 }
 483
 484 Browser* InProcessBrowserTest::CreateBrowserForPopup(Profile* profile) {
 485   Browser* browser =
 486       new Browser(Browser::CreateParams(Browser::TYPE_POPUP, profile,
 487                   chrome::GetActiveDesktop()));
 488   AddBlankTabAndShow(browser);
 489   return browser;
 490 }
 491
 492 Browser* InProcessBrowserTest::CreateBrowserForApp(
 493     const std::string& app_name,
 494     Profile* profile) {
 495   Browser* browser = new Browser(
 496       Browser::CreateParams::CreateForApp(
 497           app_name, false /* trusted_source */, gfx::Rect(), profile,
 498           chrome::GetActiveDesktop()));
 499   AddBlankTabAndShow(browser);
 500   return browser;
 501 }
 502 #endif  // !defined(OS_MACOSX)
 503
 504 void InProcessBrowserTest::AddBlankTabAndShow(Browser* browser) {
 505   content::WindowedNotificationObserver observer(
 506       content::NOTIFICATION_LOAD_STOP,
 507       content::NotificationService::AllSources());
 508   chrome::AddSelectedTabWithURL(browser,
 509                                 GURL(url::kAboutBlankURL),
 510                                 ui::PAGE_TRANSITION_AUTO_TOPLEVEL);
 511   observer.Wait();
 512
 513   browser->window()->Show();
 514 }
 515
 516 #if !defined(OS_MACOSX)
 517 base::CommandLine InProcessBrowserTest::GetCommandLineForRelaunch() {
 518   base::CommandLine new_command_line(
 519       base::CommandLine::ForCurrentProcess()->GetProgram());
 520   base::CommandLine::SwitchMap switches =
 521       base::CommandLine::ForCurrentProcess()->GetSwitches();
 522   switches.erase(switches::kUserDataDir);
 523   switches.erase(content::kSingleProcessTestsFlag);
 524   switches.erase(switches::kSingleProcess);
 525   new_command_line.AppendSwitch(content::kLaunchAsBrowser);
 526
 527   base::FilePath user_data_dir;
 528   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 529   new_command_line.AppendSwitchPath(switches::kUserDataDir, user_data_dir);
 530
 531   for (base::CommandLine::SwitchMap::const_iterator iter = switches.begin();
 532        iter != switches.end(); ++iter) {
 533     new_command_line.AppendSwitchNative((*iter).first, (*iter).second);
 534   }
 535   return new_command_line;
 536 }
 537 #endif
 538
 539 void InProcessBrowserTest::RunTestOnMainThreadLoop() {
 540   // Pump startup related events.
 541   content::RunAllPendingInMessageLoop();
 542
 543   chrome::HostDesktopType active_desktop = chrome::GetActiveDesktop();
 544   // Self-adds/removes itself from the BrowserList observers.
 545   scoped_ptr<SingleDesktopTestObserver> single_desktop_test_observer;
 546   if (!multi_desktop_test_) {
 547     single_desktop_test_observer.reset(
 548         new SingleDesktopTestObserver(active_desktop));
 549   }
 550
 551   const BrowserList* active_browser_list =
 552       BrowserList::GetInstance(active_desktop);
 553   if (!active_browser_list->empty()) {
 554     browser_ = active_browser_list->get(0);
 555 #if defined(USE_ASH)
 556     // There are cases where windows get created maximized by default.
 557     if (browser_->window()->IsMaximized())
 558       browser_->window()->Restore();
 559 #endif
 560     content::WaitForLoadStop(
 561         browser_->tab_strip_model()->GetActiveWebContents());
 562   }
 563
 564 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 565   // Do not use the real StorageMonitor for tests, which introduces another
 566   // source of variability and potential slowness.
 567   ASSERT_TRUE(storage_monitor::TestStorageMonitor::CreateForBrowserTests());
 568 #endif
 569
 570 #if defined(OS_MACOSX)
 571   // On Mac, without the following autorelease pool, code which is directly
 572   // executed (as opposed to executed inside a message loop) would autorelease
 573   // objects into a higher-level pool. This pool is not recycled in-sync with
 574   // the message loops' pools and causes problems with code relying on
 575   // deallocation via an autorelease pool (such as browser window closure and
 576   // browser shutdown). To avoid this, the following pool is recycled after each
 577   // time code is directly executed.
 578   autorelease_pool_ = new base::mac::ScopedNSAutoreleasePool;
 579 #endif
 580
 581   // Pump any pending events that were created as a result of creating a
 582   // browser.
 583   content::RunAllPendingInMessageLoop();
 584
 585   // run_accessibility_checks_for_test_case_ must be set before calling
 586   // SetUpOnMainThread or RunTestOnMainThread so that one or all tests can
 587   // enable/disable the accessibility audit.
 588   run_accessibility_checks_for_test_case_ = false;
 589
 590   SetUpOnMainThread();
 591 #if defined(OS_MACOSX)
 592   autorelease_pool_->Recycle();
 593 #endif
 594
 595   if (!HasFatalFailure())
 596     RunTestOnMainThread();
 597 #if defined(OS_MACOSX)
 598   autorelease_pool_->Recycle();
 599 #endif
 600
 601   if (run_accessibility_checks_for_test_case_) {
 602     std::string error_message;
 603     EXPECT_TRUE(RunAccessibilityChecks(&error_message));
 604     EXPECT_EQ("", error_message);
 605   }
 606
 607   // Invoke cleanup and quit even if there are failures. This is similar to
 608   // gtest in that it invokes TearDown even if Setup fails.
 609   TearDownOnMainThread();
 610 #if defined(OS_MACOSX)
 611   autorelease_pool_->Recycle();
 612 #endif
 613
 614   // Sometimes tests leave Quit tasks in the MessageLoop (for shame), so let's
 615   // run all pending messages here to avoid preempting the QuitBrowsers tasks.
 616   // TODO(jbates) Once crbug.com/134753 is fixed, this can be removed because it
 617   // will not be possible to post Quit tasks.
 618   content::RunAllPendingInMessageLoop();
 619
 620   QuitBrowsers();
 621   // All BrowserLists should be empty at this point.
 622   for (chrome::HostDesktopType t = chrome::HOST_DESKTOP_TYPE_FIRST;
 623        t < chrome::HOST_DESKTOP_TYPE_COUNT;
 624        t = static_cast<chrome::HostDesktopType>(t + 1)) {
 625     CHECK(BrowserList::GetInstance(t)->empty()) << t;
 626   }
 627 }
 628
 629 void InProcessBrowserTest::QuitBrowsers() {
 630   if (chrome::GetTotalBrowserCount() == 0) {
 631     chrome::NotifyAppTerminating();
 632     return;
 633   }
 634
 635   // Invoke AttemptExit on a running message loop.
 636   // AttemptExit exits the message loop after everything has been
 637   // shut down properly.
 638   base::ThreadTaskRunnerHandle::Get()->PostTask(
 639       FROM_HERE, base::Bind(&chrome::AttemptExit));
 640   content::RunMessageLoop();
 641
 642 #if defined(OS_MACOSX)
 643   // chrome::AttemptExit() will attempt to close all browsers by deleting
 644   // their tab contents. The last tab contents being removed triggers closing of
 645   // the browser window.
 646   //
 647   // On the Mac, this eventually reaches
 648   // -[BrowserWindowController windowWillClose:], which will post a deferred
 649   // -autorelease on itself to ultimately destroy the Browser object. The line
 650   // below is necessary to pump these pending messages to ensure all Browsers
 651   // get deleted.
 652   content::RunAllPendingInMessageLoop();
 653   delete autorelease_pool_;
 654   autorelease_pool_ = NULL;
 655 #endif
 656 }