chrome/browser/metrics/metrics_service_browsertest.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 // Tests the MetricsService stat recording to make sure that the numbers are
   6 // what we expect.
   7
   8 #include "components/metrics/metrics_service.h"
   9
  10 #include <string>
  11
  12 #include "base/command_line.h"
  13 #include "base/files/file_path.h"
  14 #include "base/path_service.h"
  15 #include "base/prefs/pref_service.h"
  16 #include "chrome/browser/browser_process.h"
  17 #include "chrome/browser/ui/browser.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/pref_names.h"
  22 #include "chrome/common/url_constants.h"
  23 #include "chrome/test/base/in_process_browser_test.h"
  24 #include "chrome/test/base/ui_test_utils.h"
  25 #include "content/public/test/browser_test_utils.h"
  26 #include "net/base/filename_util.h"
  27 #include "ui/base/window_open_disposition.h"
  28 #include "url/gurl.h"
  29
  30 class MetricsServiceBrowserTest : public InProcessBrowserTest {
  31  public:
  32   virtual void SetUpCommandLine(CommandLine* command_line) override {
  33     // Enable the metrics service for testing (in recording-only mode).
  34     command_line->AppendSwitch(switches::kMetricsRecordingOnly);
  35   }
  36
  37   // Open a couple of tabs of random content.
  38   void OpenTabs() {
  39     const int kBrowserTestFlags =
  40         ui_test_utils::BROWSER_TEST_WAIT_FOR_TAB |
  41         ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION;
  42
  43     base::FilePath test_directory;
  44     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_directory));
  45
  46     base::FilePath page1_path = test_directory.AppendASCII("title2.html");
  47     ui_test_utils::NavigateToURLWithDisposition(
  48         browser(),
  49         net::FilePathToFileURL(page1_path),
  50         NEW_FOREGROUND_TAB,
  51         kBrowserTestFlags);
  52
  53     base::FilePath page2_path = test_directory.AppendASCII("iframe.html");
  54     ui_test_utils::NavigateToURLWithDisposition(
  55         browser(),
  56         net::FilePathToFileURL(page2_path),
  57         NEW_FOREGROUND_TAB,
  58         kBrowserTestFlags);
  59   }
  60 };
  61
  62 IN_PROC_BROWSER_TEST_F(MetricsServiceBrowserTest, CloseRenderersNormally) {
  63   OpenTabs();
  64
  65   // Verify that the expected stability metrics were recorded.
  66   const PrefService* prefs = g_browser_process->local_state();
  67   EXPECT_EQ(1, prefs->GetInteger(metrics::prefs::kStabilityLaunchCount));
  68   EXPECT_EQ(3, prefs->GetInteger(prefs::kStabilityPageLoadCount));
  69   EXPECT_EQ(0, prefs->GetInteger(prefs::kStabilityRendererCrashCount));
  70   // TODO(isherman): We should also verify that
  71   // metrics::prefs::kStabilityExitedCleanly
  72   // is set to true, but this preference isn't set until the browser
  73   // exits... it's not clear to me how to test that.
  74 }
  75
  76 // Flaky on Linux. See http://crbug.com/131094
  77 #if defined(OS_LINUX)
  78 #define MAYBE_CrashRenderers DISABLED_CrashRenderers
  79 #else
  80 #define MAYBE_CrashRenderers CrashRenderers
  81 #endif
  82 IN_PROC_BROWSER_TEST_F(MetricsServiceBrowserTest, MAYBE_CrashRenderers) {
  83   OpenTabs();
  84
  85   // Kill the process for one of the tabs.
  86   content::RenderProcessHostWatcher observer(
  87       browser()->tab_strip_model()->GetActiveWebContents(),
  88       content::RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
  89   ui_test_utils::NavigateToURL(browser(), GURL(content::kChromeUICrashURL));
  90   observer.Wait();
  91
  92   // The MetricsService listens for the same notification, so the |observer|
  93   // might finish waiting before the MetricsService has a chance to process the
  94   // notification.  To avoid racing here, we repeatedly run the message loop
  95   // until the MetricsService catches up.  This should happen "real soon now",
  96   // since the notification is posted to all observers essentially
  97   // simultaneously... so busy waiting here shouldn't be too bad.
  98   const PrefService* prefs = g_browser_process->local_state();
  99   while (!prefs->GetInteger(prefs::kStabilityRendererCrashCount)) {
 100     content::RunAllPendingInMessageLoop();
 101   }
 102
 103   // Verify that the expected stability metrics were recorded.
 104   EXPECT_EQ(1, prefs->GetInteger(metrics::prefs::kStabilityLaunchCount));
 105   EXPECT_EQ(4, prefs->GetInteger(prefs::kStabilityPageLoadCount));
 106   EXPECT_EQ(1, prefs->GetInteger(prefs::kStabilityRendererCrashCount));
 107   // TODO(isherman): We should also verify that
 108   // metrics::prefs::kStabilityExitedCleanly
 109   // is set to true, but this preference isn't set until the browser
 110   // exits... it's not clear to me how to test that.
 111 }
 112