chrome/browser/metrics/chrome_browser_main_extra_parts_metrics_unittest.cc

   1 // Copyright 2015 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 "chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.h"
   6
   7 #include "base/macros.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/test/histogram_tester.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12 #include "ui/events/test/device_data_manager_test_api.h"
  13 #include "ui/gfx/geometry/size.h"
  14 #include "ui/gfx/screen.h"
  15 #include "ui/gfx/test/test_screen.h"
  16
  17 namespace {
  18
  19 const char kTouchEventsEnabledHistogramName[] =
  20     "Touchscreen.TouchEventsEnabled";
  21
  22 }  // namespace
  23
  24 class ChromeBrowserMainExtraPartsMetricsTest : public testing::Test {
  25  public:
  26   ChromeBrowserMainExtraPartsMetricsTest();
  27   ~ChromeBrowserMainExtraPartsMetricsTest() override;
  28
  29  protected:
  30   // Test API wrapping |device_data_manager_|.
  31   ui::test::DeviceDataManagerTestAPI device_data_manager_test_api_;
  32
  33  private:
  34   // Required by a ChromeBrowserMainExtraPartsMetrics test target.
  35   base::MessageLoop message_loop_;
  36
  37   // Dummy screen required by a ChromeBrowserMainExtraPartsMetrics test target.
  38   gfx::test::TestScreen test_screen_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsMetricsTest);
  41 };
  42
  43 ChromeBrowserMainExtraPartsMetricsTest::ChromeBrowserMainExtraPartsMetricsTest()
  44     : device_data_manager_test_api_() {
  45   device_data_manager_test_api_.CreateDeviceDataManagerInstance();
  46   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, &test_screen_);
  47 }
  48
  49 ChromeBrowserMainExtraPartsMetricsTest::
  50     ~ChromeBrowserMainExtraPartsMetricsTest() {
  51   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, nullptr);
  52 }
  53
  54 // Verify a TouchEventsEnabled value isn't recorded during construction.
  55 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  56        VerifyTouchEventsEnabledIsNotRecordedAfterConstruction) {
  57   base::HistogramTester histogram_tester;
  58   ChromeBrowserMainExtraPartsMetrics test_target;
  59   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 0);
  60 }
  61
  62 #if defined(USE_OZONE) || defined(USE_X11)
  63
  64 // Verify a TouchEventsEnabled value isn't recorded during PostBrowserStart if
  65 // the device scan hasn't completed yet.
  66 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  67        VerifyTouchEventsEnabledIsNotRecordedAfterPostBrowserStart) {
  68   base::HistogramTester histogram_tester;
  69
  70   ChromeBrowserMainExtraPartsMetrics test_target;
  71
  72   test_target.PostBrowserStart();
  73   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 0);
  74 }
  75
  76 // Verify a TouchEventsEnabled value is recorded during PostBrowserStart if the
  77 // device scan has already completed.
  78 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  79        VerifyTouchEventsEnabledIsRecordedAfterPostBrowserStart) {
  80   base::HistogramTester histogram_tester;
  81
  82   device_data_manager_test_api_.OnDeviceListsComplete();
  83
  84   ChromeBrowserMainExtraPartsMetrics test_target;
  85
  86   test_target.PostBrowserStart();
  87   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
  88 }
  89
  90 // Verify a TouchEventsEnabled value is recorded when an asynchronous device
  91 // scan completes.
  92 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  93        VerifyTouchEventsEnabledIsRecordedWhenDeviceListsComplete) {
  94   base::HistogramTester histogram_tester;
  95   ChromeBrowserMainExtraPartsMetrics test_target;
  96
  97   test_target.PostBrowserStart();
  98   device_data_manager_test_api_.NotifyObserversDeviceListsComplete();
  99   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
 100 }
 101
 102 // Verify a TouchEventsEnabled value is only recorded once if multiple
 103 // asynchronous device scans happen.
 104 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
 105        VerifyTouchEventsEnabledIsOnlyRecordedOnce) {
 106   base::HistogramTester histogram_tester;
 107   ChromeBrowserMainExtraPartsMetrics test_target;
 108
 109   test_target.PostBrowserStart();
 110   device_data_manager_test_api_.NotifyObserversDeviceListsComplete();
 111   device_data_manager_test_api_.NotifyObserversDeviceListsComplete();
 112   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
 113 }
 114
 115 #else
 116
 117 // Verify a TouchEventsEnabled value is recorded during PostBrowserStart.
 118 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
 119        VerifyTouchEventsEnabledIsRecordedAfterPostBrowserStart) {
 120   base::HistogramTester histogram_tester;
 121   ChromeBrowserMainExtraPartsMetrics test_target;
 122
 123   test_target.PostBrowserStart();
 124   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
 125 }
 126
 127 #endif  // defined(USE_OZONE) || defined(USE_X11)