Pass load events from prerenders to launching elements.

chrome/browser/prerender/prerender_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <deque>
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
@@ skipping 845 matching lines @@
         L"window.domAutomationController.send(Boolean("
             L"receivedPrerenderStartEvents[%d]))", index);
 
     CHECK(content::ExecuteJavaScriptAndExtractBool(
         chrome::GetActiveWebContents(current_browser())->GetRenderViewHost(),
         L"", expression,
         &received_prerender_started));
     return received_prerender_started;
   }
 
+  bool DidReceivePrerenderLoadEventForLinkNumber(int index) const {
+    bool received_prerender_loaded;
+    std::wstring expression = base::StringPrintf(
+        L"window.domAutomationController.send(Boolean("
+            L"receivedPrerenderLoadEvents[%d]))", index);
+
+    CHECK(content::ExecuteJavaScriptAndExtractBool(
+        chrome::GetActiveWebContents(current_browser())->GetRenderViewHost(),
+        L"", expression,
+        &received_prerender_loaded));
+    return received_prerender_loaded;
+  }
+
   bool DidReceivePrerenderStopEventForLinkNumber(int index) const {
     bool received_prerender_stopped;
     std::wstring expression = base::StringPrintf(
         L"window.domAutomationController.send(Boolean("
             L"receivedPrerenderStopEvents[%d]))", index);
 
     CHECK(content::ExecuteJavaScriptAndExtractBool(
         chrome::GetActiveWebContents(current_browser())->GetRenderViewHost(),
         L"", expression,
         &received_prerender_stopped));
     return received_prerender_stopped;
   }
 
+  bool HadPrerenderEventErrors() const {
+    bool had_prerender_event_errors;
+    CHECK(content::ExecuteJavaScriptAndExtractBool(
+        chrome::GetActiveWebContents(current_browser())->GetRenderViewHost(),
+        L"", L"window.domAutomationController.send(Boolean("
+                 L"hadPrerenderEventErrors))", &had_prerender_event_errors));
+    return had_prerender_event_errors;
+  }
+
   // Asserting on this can result in flaky tests.  PrerenderHandles are
   // removed from the PrerenderLinkManager when the prerender is canceled from
   // the browser, when the prerenders are cancelled from the renderer process,
   // or the channel for the renderer process is closed on the IO thread.  In the
   // last case, the code must be careful to wait for the channel to close, as it
   // is done asynchronously after swapping out the old process.  See
   // ChannelDestructionWatcher.
   bool IsEmptyPrerenderLinkManager() const {
     return GetPrerenderLinkManager()->IsEmpty();
   }
@@ skipping 335 matching lines @@
                    FINAL_STATUS_CANCELLED, 1);
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
 
   // No ChannelDestructionWatcher is needed here, since prerenders in the
   // PrerenderLinkManager should be deleted by removing the links, rather than
   // shutting down the renderer process.
   RemoveLinkElement(0);
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
+  EXPECT_FALSE(HadPrerenderEventErrors());
   // IsEmptyPrerenderLinkManager() is not racy because the earlier DidReceive*
   // calls did a thread/process hop to the renderer which insured pending
   // renderer events have arrived.
   EXPECT_TRUE(IsEmptyPrerenderLinkManager());
 }
 
 IN_PROC_BROWSER_TEST_F(
     PrerenderBrowserTest, PrerenderPageRemovingLinkWithTwoLinks) {
   GetPrerenderManager()->mutable_config().max_link_concurrency = 2;
   GetPrerenderManager()->mutable_config().max_link_concurrency_per_launcher = 2;
 
   set_loader_path("files/prerender/prerender_loader_removing_links.html");
   set_loader_query_and_fragment("?links_to_insert=2");
   PrerenderTestURL("files/prerender/prerender_page.html",
                    FINAL_STATUS_CANCELLED, 1);
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(1));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(1));
 
   RemoveLinkElement(0);
   RemoveLinkElement(1);
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(1));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(1));
+  EXPECT_FALSE(HadPrerenderEventErrors());
   // IsEmptyPrerenderLinkManager() is not racy because the earlier DidReceive*
   // calls did a thread/process hop to the renderer which insured pending
   // renderer events have arrived.
   EXPECT_TRUE(IsEmptyPrerenderLinkManager());
 }
 
 #if defined(OS_WIN)
 // TODO(gavinp): Fails on XP Rel - http://crbug.com/128841
 #define MAYBE_PrerenderPageRemovingLinkWithTwoLinksRemovingOne \
     DISABLED_PrerenderPageRemovingLinkWithTwoLinksRemovingOne
@@ skipping 13 matching lines @@
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(1));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(1));
 
   RemoveLinkElement(0);
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(1));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(1));
+  EXPECT_FALSE(HadPrerenderEventErrors());
   // IsEmptyPrerenderLinkManager() is not racy because the earlier DidReceive*
   // calls did a thread/process hop to the renderer which insured pending
   // renderer events have arrived.
   EXPECT_FALSE(IsEmptyPrerenderLinkManager());
 
   ChannelDestructionWatcher channel_close_watcher;
   channel_close_watcher.WatchChannel(
       chrome::GetActiveWebContents(browser())->GetRenderProcessHost());
   NavigateToDestURL();
   channel_close_watcher.WaitForChannelClose();
@@ skipping 1089 matching lines @@
   MessageLoop::current()->PostTask(
       FROM_HERE, base::Bind(&CancelAllPrerenders, GetPrerenderManager()));
   content::RunMessageLoop();
   EXPECT_TRUE(GetPrerenderContents() == NULL);
 }
 
 IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderEvents) {
   PrerenderTestURL("files/prerender/prerender_page.html",
                    FINAL_STATUS_CANCELLED, 1);
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
+  EXPECT_TRUE(DidReceivePrerenderLoadEventForLinkNumber(0));
   EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
 
   MessageLoop::current()->PostTask(
       FROM_HERE, base::Bind(&CancelAllPrerenders, GetPrerenderManager()));
   content::RunMessageLoop();
 
   EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
   EXPECT_TRUE(DidReceivePrerenderStopEventForLinkNumber(0));
+  EXPECT_FALSE(HadPrerenderEventErrors());
+}
+
+IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderEventsNoLoad) {

[mmenke, 2012/12/27 19:11:08]

Think it's worth mentioning that this test may pass flakily on regression, to
encourage filing a bug on intermittent failures.

[gavinp, 2012/12/28 13:23:15]

Done.

+  // This should be canceled.
+  PrerenderTestURL("files/prerender/prerender_http_auth_container.html",
+                   FINAL_STATUS_AUTH_NEEDED,
+                   1);
+  EXPECT_TRUE(DidReceivePrerenderStartEventForLinkNumber(0));
+  EXPECT_FALSE(DidReceivePrerenderLoadEventForLinkNumber(0));
+  EXPECT_FALSE(DidReceivePrerenderStopEventForLinkNumber(0));
+  EXPECT_FALSE(HadPrerenderEventErrors());
 }
 
 // Prerendering and history tests.
 // The prerendered page is navigated to in several ways [navigate via
 // omnibox, click on link, key-modified click to open in background tab, etc],
 // followed by a navigation to another page from the prerendered page, followed
 // by a back navigation.
 
 IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderNavigateClickGoBack) {
   PrerenderTestURL("files/prerender/prerender_page_with_link.html",
@@ skipping 218 matching lines @@
   channel_close_watcher.WatchChannel(
       chrome::GetActiveWebContents(browser())->GetRenderProcessHost());
   NavigateToDestURL();
   channel_close_watcher.WaitForChannelClose();
 
   ASSERT_TRUE(IsEmptyPrerenderLinkManager());
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
 }  // namespace prerender