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      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 <string>
      6 
      7 #include "base/message_loop/message_loop.h"
      8 #include "chrome/browser/renderer_host/web_cache_manager.h"
      9 #include "chrome/browser/ui/browser.h"
     10 #include "chrome/browser/ui/browser_commands.h"
     11 #include "chrome/browser/ui/tabs/tab_strip_model.h"
     12 #include "chrome/test/base/in_process_browser_test.h"
     13 #include "chrome/test/base/ui_test_utils.h"
     14 #include "content/public/browser/render_process_host.h"
     15 #include "content/public/browser/web_contents.h"
     16 #include "content/public/common/result_codes.h"
     17 #include "testing/gtest/include/gtest/gtest.h"
     18 
     19 using content::WebContents;
     20 
     21 class WebCacheManagerBrowserTest : public InProcessBrowserTest {
     22 };
     23 
     24 // Regression test for http://crbug.com/12362.  If a renderer crashes and the
     25 // user navigates to another tab and back, the browser doesn't crash.
     26 IN_PROC_BROWSER_TEST_F(WebCacheManagerBrowserTest, CrashOnceOnly) {
     27   const base::FilePath kTestDir(FILE_PATH_LITERAL("google"));
     28   const base::FilePath kTestFile(FILE_PATH_LITERAL("google.html"));
     29   GURL url(ui_test_utils::GetTestUrl(kTestDir, kTestFile));
     30 
     31   ui_test_utils::NavigateToURL(browser(), url);
     32 
     33   chrome::NewTab(browser());
     34   ui_test_utils::NavigateToURL(browser(), url);
     35 
     36   WebContents* tab = browser()->tab_strip_model()->GetWebContentsAt(0);
     37   ASSERT_TRUE(tab != NULL);
     38   base::KillProcess(tab->GetRenderProcessHost()->GetHandle(),
     39                     content::RESULT_CODE_KILLED, true);
     40 
     41   browser()->tab_strip_model()->ActivateTabAt(0, true);
     42   chrome::NewTab(browser());
     43   ui_test_utils::NavigateToURL(browser(), url);
     44 
     45   browser()->tab_strip_model()->ActivateTabAt(0, true);
     46   chrome::NewTab(browser());
     47   ui_test_utils::NavigateToURL(browser(), url);
     48 
     49   // We would have crashed at the above line with the bug.
     50 
     51   browser()->tab_strip_model()->ActivateTabAt(0, true);
     52   chrome::CloseTab(browser());
     53   browser()->tab_strip_model()->ActivateTabAt(0, true);
     54   chrome::CloseTab(browser());
     55   browser()->tab_strip_model()->ActivateTabAt(0, true);
     56   chrome::CloseTab(browser());
     57 
     58   ui_test_utils::NavigateToURL(browser(), url);
     59 
     60   EXPECT_EQ(
     61       WebCacheManager::GetInstance()->active_renderers_.size(), 1U);
     62   EXPECT_EQ(
     63       WebCacheManager::GetInstance()->inactive_renderers_.size(), 0U);
     64   EXPECT_EQ(
     65       WebCacheManager::GetInstance()->stats_.size(), 1U);
     66 }
     67