Convert JavascriptAlertActivatesTab to browser_tests framework.

This should make it non-flaky, so I un-disabled the test. I also added necessary plumbing so we can
wait for AppModalDialog to appear and close it.

TEST=Covered by browser_tests.
http://crbug.com/16062

Review URL: http://codereview.chromium.org/149460

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20400 0039d316-1c4b-4281-b951-d872f2087c98

7 files changed, 98 insertions, 22 deletions

diff --git a/chrome/browser/app_modal_dialog.cc b/chrome/browser/app_modal_dialog.cc
index afabff8..aa876cc 100644
--- a/chrome/browser/app_modal_dialog.cc
+++ b/chrome/browser/app_modal_dialog.cc
@@ -50,6 +50,13 @@ void AppModalDialog::Observe(NotificationType type,
     CloseModalDialog();
 }
 
+void AppModalDialog::SendCloseNotification() {
+  NotificationService::current()->Notify(
+      NotificationType::APP_MODAL_DIALOG_CLOSED,
+      Source<AppModalDialog>(this),
+      NotificationService::NoDetails());
+}
+
 void AppModalDialog::InitNotifications() {
   // Make sure we get navigation notifications so we know when our parent
   // contents will disappear or navigate to a different page.
@@ -70,6 +77,11 @@ void AppModalDialog::ShowModalDialog() {
 
   tab_contents_->Activate();
   CreateAndShowDialog();
+
+  NotificationService::current()->Notify(
+      NotificationType::APP_MODAL_DIALOG_SHOWN,
+      Source<AppModalDialog>(this),
+      NotificationService::NoDetails());
 }
 
 void AppModalDialog::OnCancel() {
@@ -85,6 +97,8 @@ void AppModalDialog::OnCancel() {
     tab_contents_->OnJavaScriptMessageBoxClosed(reply_msg_, false,
                                                 std::wstring());
   }
+
+  SendCloseNotification();
 }
 
 void AppModalDialog::OnAccept(const std::wstring& prompt_text,
@@ -98,10 +112,14 @@ void AppModalDialog::OnAccept(const std::wstring& prompt_text,
     if (suppress_js_messages)
       tab_contents()->set_suppress_javascript_messages(true);
   }
+
+  SendCloseNotification();
 }
 
 void AppModalDialog::OnClose() {
- if (tab_contents_) {
-   tab_contents_->OnJavaScriptMessageBoxWindowDestroyed();
- }
+  if (tab_contents_) {
+    tab_contents_->OnJavaScriptMessageBoxWindowDestroyed();
+  }
+
+  SendCloseNotification();
 }
diff --git a/chrome/browser/app_modal_dialog.h b/chrome/browser/app_modal_dialog.h
index 325c222..8d44d64 100644
--- a/chrome/browser/app_modal_dialog.h
+++ b/chrome/browser/app_modal_dialog.h
@@ -95,6 +95,9 @@ class AppModalDialog : public NotificationObserver {
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
+  // Sends APP_MODAL_DIALOG_CLOSED notification.
+  void SendCloseNotification();
+
   NotificationRegistrar registrar_;
 
   // A reference to the platform native dialog box.
diff --git a/chrome/browser/browser_browsertest.cc b/chrome/browser/browser_browsertest.cc
index 69ef1b8..f209837 100644
--- a/chrome/browser/browser_browsertest.cc
+++ b/chrome/browser/browser_browsertest.cc
@@ -5,9 +5,11 @@
 #include <string>
 
 #include "app/l10n_util.h"
+#include "chrome/browser/app_modal_dialog.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/page_transition_types.h"
 #include "chrome/test/in_process_browser_test.h"
 #include "chrome/test/ui_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -79,3 +81,20 @@ IN_PROC_BROWSER_TEST_F(BrowserTest, Title) {
   ASSERT_TRUE(ui_test_utils::GetCurrentTabTitle(browser(), &tab_title));
   EXPECT_EQ(WideToUTF16(test_title), tab_title);
 }
+
+IN_PROC_BROWSER_TEST_F(BrowserTest, JavascriptAlertActivatesTab) {
+  GURL url(ui_test_utils::GetTestUrl(L".", L"title1.html"));
+  ui_test_utils::NavigateToURL(browser(), url);
+  browser()->AddTabWithURL(url, GURL(), PageTransition::TYPED,
+                           true, 0, false, NULL);
+  EXPECT_EQ(2, browser()->tab_count());
+  EXPECT_EQ(0, browser()->selected_index());
+  TabContents* second_tab = browser()->GetTabContentsAt(1);
+  ASSERT_TRUE(second_tab);
+  second_tab->render_view_host()->ExecuteJavascriptInWebFrame(L"",
+      L"alert('Activate!');");
+  AppModalDialog* alert = ui_test_utils::WaitForAppModalDialog();
+  alert->CloseModalDialog();
+  EXPECT_EQ(2, browser()->tab_count());
+  EXPECT_EQ(1, browser()->selected_index());
+}
diff --git a/chrome/browser/browser_uitest.cc b/chrome/browser/browser_uitest.cc
index a65499f..57fc6b5 100644
--- a/chrome/browser/browser_uitest.cc
+++ b/chrome/browser/browser_uitest.cc
@@ -113,25 +113,6 @@ TEST_F(BrowserTest, WindowsSessionEnd) {
 }
 #endif
 
-// This test is flakey, see bug 5668 for details.
-TEST_F(BrowserTest, DISABLED_JavascriptAlertActivatesTab) {
-  scoped_refptr<BrowserProxy> window(automation()->GetBrowserWindow(0));
-  int start_index;
-  ASSERT_TRUE(window->GetActiveTabIndex(&start_index));
-  ASSERT_TRUE(window->AppendTab(GURL("about:blank")));
-  int javascript_tab_index;
-  ASSERT_TRUE(window->GetActiveTabIndex(&javascript_tab_index));
-  scoped_refptr<TabProxy> javascript_tab = window->GetActiveTab();
-  ASSERT_TRUE(javascript_tab.get());
-  // Switch back to the starting tab, then send the second tab a javascript
-  // alert, which should force it to become active.
-  ASSERT_TRUE(window->ActivateTab(start_index));
-  ASSERT_TRUE(
-      javascript_tab->NavigateToURLAsync(GURL("javascript:alert('Alert!')")));
-  ASSERT_TRUE(window->WaitForTabToBecomeActive(javascript_tab_index,
-                                               action_max_timeout_ms()));
-}
-
 // Test that scripts can fork a new renderer process for a tab in a particular
 // case (which matches following a link in Gmail).  The script must open a new
 // tab, set its window.opener to null, and redirect it to a cross-site URL.
diff --git a/chrome/common/notification_type.h b/chrome/common/notification_type.h
index 93cbbaf..d56a0b0 100644
--- a/chrome/common/notification_type.h
+++ b/chrome/common/notification_type.h
@@ -215,6 +215,16 @@ class NotificationType {
     // Linux.
     ACTIVE_WINDOW_CHANGED,
 
+    // Application-modal dialogs -----------------------------------------------
+
+    // Sent after an application-modal dialog has been shown. The source
+    // is the dialog.
+    APP_MODAL_DIALOG_SHOWN,
+
+    // Sent after an application-modal dialog has been closed. The source
+    // is the dialog.
+    APP_MODAL_DIALOG_CLOSED,
+
     // Tabs --------------------------------------------------------------------
 
     // This notification is sent after a tab has been appended to the
diff --git a/chrome/test/ui_test_utils.cc b/chrome/test/ui_test_utils.cc
index 4f65c35..8167968 100644
--- a/chrome/test/ui_test_utils.cc
+++ b/chrome/test/ui_test_utils.cc
@@ -194,6 +194,41 @@ class DownloadsCompleteObserver : public DownloadManager::Observer,
   DISALLOW_COPY_AND_ASSIGN(DownloadsCompleteObserver);
 };
 
+// Used to block until an application modal dialog is shown.
+class AppModalDialogObserver : public NotificationObserver {
+ public:
+  AppModalDialogObserver() {}
+
+  AppModalDialog* WaitForAppModalDialog() {
+    registrar_.Add(this, NotificationType::APP_MODAL_DIALOG_SHOWN,
+                   NotificationService::AllSources());
+    dialog_ = NULL;
+    ui_test_utils::RunMessageLoop();
+    DCHECK(dialog_);
+    return dialog_;
+  }
+
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details) {
+    if (type == NotificationType::APP_MODAL_DIALOG_SHOWN) {
+      registrar_.Remove(this, NotificationType::APP_MODAL_DIALOG_SHOWN,
+                        NotificationService::AllSources());
+      dialog_ = Source<AppModalDialog>(source).ptr();
+      MessageLoopForUI::current()->Quit();
+    } else {
+      NOTREACHED();
+    }
+  }
+
+ private:
+  NotificationRegistrar registrar_;
+
+  AppModalDialog* dialog_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppModalDialogObserver);
+};
+
 }  // namespace
 
 void RunMessageLoop() {
@@ -330,4 +365,9 @@ void WaitForDownloadCount(DownloadManager* download_manager, size_t count) {
   DownloadsCompleteObserver download_observer(download_manager, count);
 }
 
+AppModalDialog* WaitForAppModalDialog() {
+  AppModalDialogObserver observer;
+  return observer.WaitForAppModalDialog();
+}
+
 }  // namespace ui_test_utils
diff --git a/chrome/test/ui_test_utils.h b/chrome/test/ui_test_utils.h
index 34c8545..3b2aef9 100644
--- a/chrome/test/ui_test_utils.h
+++ b/chrome/test/ui_test_utils.h
@@ -11,6 +11,7 @@
 #include "base/string16.h"
 #include "chrome/common/notification_observer.h"
 
+class AppModalDialog;
 class Browser;
 class DownloadManager;
 class GURL;
@@ -85,6 +86,10 @@ GURL GetTestUrl(const std::wstring& dir, const std::wstring file);
 // Creates an observer that waits for |download_manager| to report that it
 // has a total of |count| downloads that have been handles
 void WaitForDownloadCount(DownloadManager* download_manager, size_t count);
+
+// Blocks until an application modal dialog is showns and returns it.
+AppModalDialog* WaitForAppModalDialog();
+
 }
 
 #endif  // CHROME_TEST_UI_TEST_UTILS_H_