chrome/browser/extensions/lazy_background_page_apitest.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/command_line.h"
   6 #include "base/files/file_path.h"
   7 #include "base/path_service.h"
   8 #include "base/scoped_observer.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
  11 #include "chrome/browser/extensions/browser_action_test_util.h"
  12 #include "chrome/browser/extensions/extension_apitest.h"
  13 #include "chrome/browser/extensions/lazy_background_page_test_util.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/ui/browser.h"
  16 #include "chrome/browser/ui/browser_window.h"
  17 #include "chrome/browser/ui/location_bar/location_bar.h"
  18 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  19 #include "chrome/common/chrome_paths.h"
  20 #include "chrome/common/chrome_switches.h"
  21 #include "chrome/common/url_constants.h"
  22 #include "chrome/test/base/ui_test_utils.h"
  23 #include "components/app_modal/app_modal_dialog.h"
  24 #include "components/bookmarks/browser/bookmark_model.h"
  25 #include "components/bookmarks/browser/bookmark_utils.h"
  26 #include "components/bookmarks/test/bookmark_test_helpers.h"
  27 #include "content/public/browser/web_contents.h"
  28 #include "content/public/test/browser_test_utils.h"
  29 #include "content/public/test/test_utils.h"
  30 #include "extensions/browser/extension_host.h"
  31 #include "extensions/browser/extension_registry.h"
  32 #include "extensions/browser/extension_registry_observer.h"
  33 #include "extensions/browser/process_manager.h"
  34 #include "extensions/common/extension.h"
  35 #include "extensions/test/extension_test_message_listener.h"
  36 #include "extensions/test/result_catcher.h"
  37 #include "net/dns/mock_host_resolver.h"
  38 #include "net/test/embedded_test_server/embedded_test_server.h"
  39 #include "testing/gtest/include/gtest/gtest.h"
  40 #include "url/gurl.h"
  41
  42 using bookmarks::BookmarkModel;
  43 using bookmarks::BookmarkNode;
  44 using extensions::Extension;
  45 using extensions::ResultCatcher;
  46
  47 namespace {
  48
  49 // This unfortunate bit of silliness is necessary when loading an extension in
  50 // incognito. The goal is to load the extension, enable incognito, then wait
  51 // for both background pages to load and close. The problem is that enabling
  52 // incognito involves reloading the extension - and the background pages may
  53 // have already loaded once before then. So we wait until the extension is
  54 // unloaded before listening to the background page notifications.
  55 class LoadedIncognitoObserver : public extensions::ExtensionRegistryObserver {
  56  public:
  57   explicit LoadedIncognitoObserver(Profile* profile)
  58       : profile_(profile), extension_registry_observer_(this) {
  59     extension_registry_observer_.Add(
  60         extensions::ExtensionRegistry::Get(profile_));
  61   }
  62
  63   void Wait() {
  64     ASSERT_TRUE(original_complete_.get());
  65     original_complete_->Wait();
  66     incognito_complete_->Wait();
  67   }
  68
  69  private:
  70   void OnExtensionUnloaded(
  71       content::BrowserContext* browser_context,
  72       const Extension* extension,
  73       extensions::UnloadedExtensionInfo::Reason reason) override {
  74     original_complete_.reset(new LazyBackgroundObserver(profile_));
  75     incognito_complete_.reset(
  76         new LazyBackgroundObserver(profile_->GetOffTheRecordProfile()));
  77   }
  78
  79   Profile* profile_;
  80   ScopedObserver<extensions::ExtensionRegistry,
  81                  extensions::ExtensionRegistryObserver>
  82       extension_registry_observer_;
  83   scoped_ptr<LazyBackgroundObserver> original_complete_;
  84   scoped_ptr<LazyBackgroundObserver> incognito_complete_;
  85 };
  86
  87 }  // namespace
  88
  89 class LazyBackgroundPageApiTest : public ExtensionApiTest {
  90  public:
  91   LazyBackgroundPageApiTest() {}
  92   ~LazyBackgroundPageApiTest() override {}
  93
  94   void SetUpInProcessBrowserTestFixture() override {
  95     ExtensionApiTest::SetUpInProcessBrowserTestFixture();
  96     // Set shorter delays to prevent test timeouts.
  97     extensions::ProcessManager::SetEventPageIdleTimeForTesting(1);
  98     extensions::ProcessManager::SetEventPageSuspendingTimeForTesting(1);
  99   }
 100
 101   void SetUpCommandLine(base::CommandLine* command_line) override {
 102     ExtensionApiTest::SetUpCommandLine(command_line);
 103     // Disable background network activity as it can suddenly bring the Lazy
 104     // Background Page alive.
 105     command_line->AppendSwitch(switches::kDisableBackgroundNetworking);
 106     command_line->AppendSwitch(switches::kNoProxyServer);
 107   }
 108
 109   // Loads the extension, which temporarily starts the lazy background page
 110   // to dispatch the onInstalled event. We wait until it shuts down again.
 111   const Extension* LoadExtensionAndWait(const std::string& test_name) {
 112     LazyBackgroundObserver page_complete;
 113     base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 114         AppendASCII(test_name);
 115     const Extension* extension = LoadExtension(extdir);
 116     if (extension)
 117       page_complete.Wait();
 118     return extension;
 119   }
 120
 121   // Returns true if the lazy background page for the extension with
 122   // |extension_id| is still running.
 123   bool IsBackgroundPageAlive(const std::string& extension_id) {
 124     extensions::ProcessManager* pm =
 125         extensions::ProcessManager::Get(browser()->profile());
 126     return pm->GetBackgroundHostForExtension(extension_id);
 127   }
 128
 129  private:
 130   DISALLOW_COPY_AND_ASSIGN(LazyBackgroundPageApiTest);
 131 };
 132
 133 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, BrowserActionCreateTab) {
 134   ASSERT_TRUE(LoadExtensionAndWait("browser_action_create_tab"));
 135
 136   // Lazy Background Page doesn't exist yet.
 137   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 138   int num_tabs_before = browser()->tab_strip_model()->count();
 139
 140   // Observe background page being created and closed after
 141   // the browser action is clicked.
 142   LazyBackgroundObserver page_complete;
 143   BrowserActionTestUtil(browser()).Press(0);
 144   page_complete.Wait();
 145
 146   // Background page created a new tab before it closed.
 147   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 148   EXPECT_EQ(num_tabs_before + 1, browser()->tab_strip_model()->count());
 149   EXPECT_EQ(std::string(chrome::kChromeUIExtensionsURL),
 150             browser()->tab_strip_model()->GetActiveWebContents()->
 151                 GetURL().spec());
 152 }
 153
 154 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest,
 155                        BrowserActionCreateTabAfterCallback) {
 156   ASSERT_TRUE(LoadExtensionAndWait("browser_action_with_callback"));
 157
 158   // Lazy Background Page doesn't exist yet.
 159   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 160   int num_tabs_before = browser()->tab_strip_model()->count();
 161
 162   // Observe background page being created and closed after
 163   // the browser action is clicked.
 164   LazyBackgroundObserver page_complete;
 165   BrowserActionTestUtil(browser()).Press(0);
 166   page_complete.Wait();
 167
 168   // Background page is closed after creating a new tab.
 169   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 170   EXPECT_EQ(num_tabs_before + 1, browser()->tab_strip_model()->count());
 171 }
 172
 173 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, BroadcastEvent) {
 174   ASSERT_TRUE(StartEmbeddedTestServer());
 175
 176   const Extension* extension = LoadExtensionAndWait("broadcast_event");
 177   ASSERT_TRUE(extension);
 178
 179   // Lazy Background Page doesn't exist yet.
 180   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 181   int num_page_actions = browser()->window()->GetLocationBar()->
 182       GetLocationBarForTesting()->PageActionVisibleCount();
 183
 184   // Open a tab to a URL that will trigger the page action to show.
 185   LazyBackgroundObserver page_complete;
 186   ui_test_utils::NavigateToURL(
 187       browser(), embedded_test_server()->GetURL("/extensions/test_file.html"));
 188   page_complete.Wait();
 189
 190   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 191
 192   // Page action is shown.
 193   WaitForPageActionVisibilityChangeTo(num_page_actions + 1);
 194   EXPECT_EQ(num_page_actions + 1,
 195             browser()->window()->GetLocationBar()->
 196                 GetLocationBarForTesting()->PageActionVisibleCount());
 197 }
 198
 199 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, Filters) {
 200   ASSERT_TRUE(StartEmbeddedTestServer());
 201
 202   const Extension* extension = LoadExtensionAndWait("filters");
 203   ASSERT_TRUE(extension);
 204
 205   // Lazy Background Page doesn't exist yet.
 206   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 207
 208   // Open a tab to a URL that will fire a webNavigation event.
 209   LazyBackgroundObserver page_complete;
 210   ui_test_utils::NavigateToURL(
 211       browser(), embedded_test_server()->GetURL("/extensions/test_file.html"));
 212   page_complete.Wait();
 213 }
 214
 215 // Tests that the lazy background page receives the onInstalled event and shuts
 216 // down.
 217 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, OnInstalled) {
 218   ResultCatcher catcher;
 219   ASSERT_TRUE(LoadExtensionAndWait("on_installed"));
 220   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 221
 222   // Lazy Background Page has been shut down.
 223   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 224 }
 225
 226 // Tests that a JavaScript alert keeps the lazy background page alive.
 227 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, WaitForDialog) {
 228   LazyBackgroundObserver background_observer;
 229   base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 230       AppendASCII("wait_for_dialog");
 231   const Extension* extension = LoadExtension(extdir);
 232   ASSERT_TRUE(extension);
 233
 234   // The test extension opens a dialog on installation.
 235   app_modal::AppModalDialog* dialog = ui_test_utils::WaitForAppModalDialog();
 236   ASSERT_TRUE(dialog);
 237
 238   // With the dialog open the background page is still alive.
 239   EXPECT_TRUE(IsBackgroundPageAlive(extension->id()));
 240
 241   // Close the dialog. The keep alive count is decremented.
 242   extensions::ProcessManager* pm =
 243       extensions::ProcessManager::Get(browser()->profile());
 244   int previous_keep_alive_count = pm->GetLazyKeepaliveCount(extension);
 245   dialog->CloseModalDialog();
 246   EXPECT_EQ(previous_keep_alive_count - 1,
 247             pm->GetLazyKeepaliveCount(extension));
 248
 249   // The background page closes now that the dialog is gone.
 250   background_observer.WaitUntilClosed();
 251   EXPECT_FALSE(IsBackgroundPageAlive(extension->id()));
 252 }
 253
 254 // Tests that the lazy background page stays alive until all visible views are
 255 // closed.
 256 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, WaitForView) {
 257   LazyBackgroundObserver page_complete;
 258   ResultCatcher catcher;
 259   base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 260       AppendASCII("wait_for_view");
 261   const Extension* extension = LoadExtension(extdir);
 262   ASSERT_TRUE(extension);
 263   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 264
 265   // The extension should've opened a new tab to an extension page.
 266   EXPECT_EQ(extension->GetResourceURL("extension_page.html").spec(),
 267             browser()->tab_strip_model()->GetActiveWebContents()->
 268                 GetURL().spec());
 269
 270   // Lazy Background Page still exists, because the extension created a new tab
 271   // to an extension page.
 272   EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
 273
 274   // Close the new tab.
 275   browser()->tab_strip_model()->CloseWebContentsAt(
 276       browser()->tab_strip_model()->active_index(), TabStripModel::CLOSE_NONE);
 277   page_complete.Wait();
 278
 279   // Lazy Background Page has been shut down.
 280   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 281 }
 282
 283 // Tests that the lazy background page stays alive until all network requests
 284 // are complete.
 285 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, WaitForRequest) {
 286   host_resolver()->AddRule("*", "127.0.0.1");
 287   ASSERT_TRUE(StartEmbeddedTestServer());
 288
 289   LazyBackgroundObserver page_complete;
 290   ResultCatcher catcher;
 291   base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 292       AppendASCII("wait_for_request");
 293   const Extension* extension = LoadExtension(extdir);
 294   ASSERT_TRUE(extension);
 295   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 296
 297   // Lazy Background Page still exists, because the extension started a request.
 298   extensions::ProcessManager* pm =
 299       extensions::ProcessManager::Get(browser()->profile());
 300   extensions::ExtensionHost* host =
 301       pm->GetBackgroundHostForExtension(last_loaded_extension_id());
 302   ASSERT_TRUE(host);
 303
 304   // Abort the request.
 305   bool result = false;
 306   EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
 307       host->render_view_host(), "abortRequest()", &result));
 308   EXPECT_TRUE(result);
 309   page_complete.Wait();
 310
 311   // Lazy Background Page has been shut down.
 312   EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 313 }
 314
 315 // Tests that the lazy background page stays alive while a NaCl module exists in
 316 // its DOM.
 317 #if !defined(DISABLE_NACL) && !defined(DISABLE_NACL_BROWSERTESTS)
 318 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, NaCl) {
 319   {
 320     base::FilePath extdir;
 321     ASSERT_TRUE(PathService::Get(chrome::DIR_GEN_TEST_DATA, &extdir));
 322     extdir = extdir.AppendASCII("ppapi/tests/extensions/load_unload/newlib");
 323     LazyBackgroundObserver page_complete;
 324     ASSERT_TRUE(LoadExtension(extdir));
 325     page_complete.Wait();
 326   }
 327
 328   // The NaCl module is loaded, and the Lazy Background Page stays alive.
 329   {
 330     ExtensionTestMessageListener nacl_module_loaded("nacl_module_loaded",
 331                                                     false);
 332     BrowserActionTestUtil(browser()).Press(0);
 333     nacl_module_loaded.WaitUntilSatisfied();
 334     content::RunAllBlockingPoolTasksUntilIdle();
 335     EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
 336   }
 337
 338   // The NaCl module is detached from DOM, and the Lazy Background Page shuts
 339   // down.
 340   {
 341     LazyBackgroundObserver page_complete;
 342     BrowserActionTestUtil(browser()).Press(0);
 343     page_complete.WaitUntilClosed();
 344   }
 345
 346   // The Lazy Background Page has been shut down.
 347   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 348 }
 349 #endif
 350
 351 // Tests that the lazy background page stays alive until all visible views are
 352 // closed.
 353 // http://crbug.com/175778; test fails frequently on OS X
 354 #if defined(OS_MACOSX)
 355 #define MAYBE_WaitForNTP DISABLED_WaitForNTP
 356 #else
 357 #define MAYBE_WaitForNTP WaitForNTP
 358 #endif
 359 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, MAYBE_WaitForNTP) {
 360   LazyBackgroundObserver lazybg;
 361   ResultCatcher catcher;
 362   base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 363       AppendASCII("wait_for_ntp");
 364   const Extension* extension = LoadExtension(extdir);
 365   ASSERT_TRUE(extension);
 366   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 367
 368   // The extension should've opened a new tab to an extension page.
 369   EXPECT_EQ(GURL(chrome::kChromeUINewTabURL),
 370             browser()->tab_strip_model()->GetActiveWebContents()->GetURL());
 371
 372   // Lazy Background Page still exists, because the extension created a new tab
 373   // to an extension page.
 374   EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
 375
 376   // Navigate away from the NTP, which should close the event page.
 377   ui_test_utils::NavigateToURL(browser(), GURL("about:blank"));
 378   lazybg.Wait();
 379
 380   // Lazy Background Page has been shut down.
 381   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 382 }
 383
 384 // Tests that an incognito split mode extension gets 2 lazy background pages,
 385 // and they each load and unload at the proper times.
 386 // See crbug.com/248437
 387 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, DISABLED_IncognitoSplitMode) {
 388   // Open incognito window.
 389   Browser* incognito_browser =
 390       OpenURLOffTheRecord(browser()->profile(), GURL("about:blank"));
 391
 392   // Load the extension with incognito enabled.
 393   {
 394     LoadedIncognitoObserver loaded(browser()->profile());
 395     base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 396         AppendASCII("incognito_split");
 397     ASSERT_TRUE(LoadExtensionIncognito(extdir));
 398     loaded.Wait();
 399   }
 400
 401   // Lazy Background Page doesn't exist yet.
 402   extensions::ProcessManager* pm =
 403       extensions::ProcessManager::Get(browser()->profile());
 404   extensions::ProcessManager* pmi =
 405       extensions::ProcessManager::Get(incognito_browser->profile());
 406   EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 407   EXPECT_FALSE(pmi->GetBackgroundHostForExtension(last_loaded_extension_id()));
 408
 409   // Trigger a browserAction event in the original profile and ensure only
 410   // the original event page received it (since the event is scoped to the
 411   // profile).
 412   {
 413     ExtensionTestMessageListener listener("waiting", false);
 414     ExtensionTestMessageListener listener_incognito("waiting_incognito", false);
 415
 416     LazyBackgroundObserver page_complete(browser()->profile());
 417     BrowserActionTestUtil(browser()).Press(0);
 418     page_complete.Wait();
 419
 420     // Only the original event page received the message.
 421     EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 422     EXPECT_FALSE(
 423         pmi->GetBackgroundHostForExtension(last_loaded_extension_id()));
 424     EXPECT_TRUE(listener.was_satisfied());
 425     EXPECT_FALSE(listener_incognito.was_satisfied());
 426   }
 427
 428   // Trigger a bookmark created event and ensure both pages receive it.
 429   {
 430     ExtensionTestMessageListener listener("waiting", false);
 431     ExtensionTestMessageListener listener_incognito("waiting_incognito", false);
 432
 433     LazyBackgroundObserver page_complete(browser()->profile()),
 434                            page2_complete(incognito_browser->profile());
 435     BookmarkModel* bookmark_model =
 436         BookmarkModelFactory::GetForProfile(browser()->profile());
 437     bookmarks::test::WaitForBookmarkModelToLoad(bookmark_model);
 438     const BookmarkNode* parent = bookmark_model->bookmark_bar_node();
 439     bookmark_model->AddURL(
 440         parent, 0, base::ASCIIToUTF16("Title"), GURL("about:blank"));
 441     page_complete.Wait();
 442     page2_complete.Wait();
 443
 444     // Both pages received the message.
 445     EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 446     EXPECT_FALSE(
 447         pmi->GetBackgroundHostForExtension(last_loaded_extension_id()));
 448     EXPECT_TRUE(listener.was_satisfied());
 449     EXPECT_TRUE(listener_incognito.was_satisfied());
 450   }
 451 }
 452
 453 // Tests that messages from the content script activate the lazy background
 454 // page, and keep it alive until all channels are closed.
 455 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, Messaging) {
 456   ASSERT_TRUE(StartEmbeddedTestServer());
 457   ASSERT_TRUE(LoadExtensionAndWait("messaging"));
 458
 459   // Lazy Background Page doesn't exist yet.
 460   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 461   EXPECT_EQ(1, browser()->tab_strip_model()->count());
 462
 463   // Navigate to a page that opens a message channel to the background page.
 464   ResultCatcher catcher;
 465   LazyBackgroundObserver lazybg;
 466   ui_test_utils::NavigateToURL(
 467       browser(), embedded_test_server()->GetURL("/extensions/test_file.html"));
 468   lazybg.WaitUntilLoaded();
 469
 470   // Background page got the content script's message and is still loaded
 471   // until we close the channel.
 472   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 473   EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
 474
 475   // Navigate away, closing the message channel and therefore the background
 476   // page.
 477   ui_test_utils::NavigateToURL(browser(), GURL("about:blank"));
 478   lazybg.WaitUntilClosed();
 479
 480   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 481 }
 482
 483 // Tests that a KeepaliveImpulse increments the keep alive count, but eventually
 484 // times out and background page will still close.
 485 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, ImpulseAddsCount) {
 486   ASSERT_TRUE(StartEmbeddedTestServer());
 487   const Extension* extension = LoadExtensionAndWait("messaging");
 488   ASSERT_TRUE(extension);
 489
 490   // Lazy Background Page doesn't exist yet.
 491   extensions::ProcessManager* pm =
 492       extensions::ProcessManager::Get(browser()->profile());
 493   EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 494   EXPECT_EQ(1, browser()->tab_strip_model()->count());
 495
 496   // Navigate to a page that opens a message channel to the background page.
 497   ResultCatcher catcher;
 498   LazyBackgroundObserver lazybg;
 499   ui_test_utils::NavigateToURL(
 500       browser(), embedded_test_server()->GetURL("/extensions/test_file.html"));
 501   lazybg.WaitUntilLoaded();
 502
 503   // Add an impulse and the keep alive count increases.
 504   int previous_keep_alive_count = pm->GetLazyKeepaliveCount(extension);
 505   pm->KeepaliveImpulse(extension);
 506   EXPECT_EQ(previous_keep_alive_count + 1,
 507             pm->GetLazyKeepaliveCount(extension));
 508
 509   // Navigate away, closing the message channel and therefore the background
 510   // page after the impulse times out.
 511   ui_test_utils::NavigateToURL(browser(), GURL("about:blank"));
 512   lazybg.WaitUntilClosed();
 513
 514   EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 515 }
 516
 517 // Tests that the lazy background page receives the unload event when we
 518 // close it, and that it can execute simple API calls that don't require an
 519 // asynchronous response.
 520 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, OnUnload) {
 521   ASSERT_TRUE(LoadExtensionAndWait("on_unload"));
 522
 523   // Lazy Background Page has been shut down.
 524   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 525
 526   // The browser action has a new title.
 527   BrowserActionTestUtil browser_action(browser());
 528   ASSERT_EQ(1, browser_action.NumberOfBrowserActions());
 529   EXPECT_EQ("Success", browser_action.GetTooltip(0));
 530 }
 531
 532 // Tests that both a regular page and an event page will receive events when
 533 // the event page is not loaded.
 534 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, EventDispatchToTab) {
 535   ResultCatcher catcher;
 536   catcher.RestrictToBrowserContext(browser()->profile());
 537
 538   const extensions::Extension* extension =
 539       LoadExtensionAndWait("event_dispatch_to_tab");
 540
 541   ExtensionTestMessageListener page_ready("ready", true);
 542   GURL page_url = extension->GetResourceURL("page.html");
 543   ui_test_utils::NavigateToURL(browser(), page_url);
 544   EXPECT_TRUE(page_ready.WaitUntilSatisfied());
 545
 546   // After the event is sent below, wait for the event page to have received
 547   // the event before proceeding with the test.  This allows the regular page
 548   // to test that the event page received the event, which makes the pass/fail
 549   // logic simpler.
 550   ExtensionTestMessageListener event_page_ready("ready", true);
 551
 552   // Send an event by making a bookmark.
 553   BookmarkModel* bookmark_model =
 554       BookmarkModelFactory::GetForProfile(browser()->profile());
 555   bookmarks::test::WaitForBookmarkModelToLoad(bookmark_model);
 556   bookmarks::AddIfNotBookmarked(bookmark_model,
 557                                 GURL("http://www.google.com"),
 558                                 base::UTF8ToUTF16("Google"));
 559
 560   EXPECT_TRUE(event_page_ready.WaitUntilSatisfied());
 561
 562   page_ready.Reply("go");
 563
 564   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 565 }
 566
 567 // Tests that the lazy background page updates the chrome://extensions page
 568 // when it is destroyed.
 569 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, UpdateExtensionsPage) {
 570   ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUIExtensionsURL));
 571
 572   ResultCatcher catcher;
 573   base::FilePath extdir = test_data_dir_.AppendASCII("lazy_background_page").
 574       AppendASCII("wait_for_view");
 575   const Extension* extension = LoadExtension(extdir);
 576   ASSERT_TRUE(extension);
 577   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 578
 579   // The extension should've opened a new tab to an extension page.
 580   EXPECT_EQ(extension->GetResourceURL("extension_page.html").spec(),
 581             browser()->tab_strip_model()->GetActiveWebContents()->
 582                 GetURL().spec());
 583
 584   // Lazy Background Page still exists, because the extension created a new tab
 585   // to an extension page.
 586   EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
 587
 588   // Close the new tab.
 589   LazyBackgroundObserver page_complete;
 590   browser()->tab_strip_model()->CloseWebContentsAt(
 591       browser()->tab_strip_model()->active_index(), TabStripModel::CLOSE_NONE);
 592   page_complete.WaitUntilClosed();
 593
 594   // Lazy Background Page has been shut down.
 595   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 596
 597   // Verify that extensions page shows that the lazy background page is
 598   // inactive.
 599   content::RenderFrameHost* frame = content::FrameMatchingPredicate(
 600       browser()->tab_strip_model()->GetActiveWebContents(),
 601       base::Bind(&content::FrameHasSourceUrl,
 602                  GURL(chrome::kChromeUIExtensionsFrameURL)));
 603
 604   // Updating the extensions page is a process that has back-and-forth
 605   // communication (i.e., backend tells extensions page something changed,
 606   // extensions page requests updated data, backend responds with updated data,
 607   // and so forth). This makes it difficult to know for sure when the page is
 608   // done updating, so just try a few times. We limit the total number of
 609   // attempts so that a) the test *fails* (instead of times out), and b) we
 610   // know we're not making a ridiculous amount of trips to update the page.
 611   bool is_inactive = false;
 612   int kMaxTries = 10;
 613   int num_tries = 0;
 614   while (!is_inactive && num_tries++ < kMaxTries) {
 615     EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
 616         frame,
 617         "var ele = document.querySelectorAll('div.active-views');"
 618         "window.domAutomationController.send("
 619         "    ele[0].innerHTML.search('(Inactive)') > 0);",
 620         &is_inactive));
 621   }
 622 }
 623
 624 // Tests that the lazy background page will be unloaded if the onSuspend event
 625 // handler calls an API function such as chrome.storage.local.set().
 626 // See: http://crbug.com/296834
 627 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, OnSuspendUseStorageApi) {
 628   EXPECT_TRUE(LoadExtensionAndWait("on_suspend"));
 629 }
 630
 631 // TODO: background page with timer.
 632 // TODO: background page that interacts with popup.