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   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, &test_screen_);
  46 }
  47
  48 ChromeBrowserMainExtraPartsMetricsTest::
  49     ~ChromeBrowserMainExtraPartsMetricsTest() {
  50   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, nullptr);
  51 }
  52
  53 // Verify a TouchEventsEnabled value isn't recorded during construction.
  54 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  55        VerifyTouchEventsEnabledIsNotRecordedAfterConstruction) {
  56   base::HistogramTester histogram_tester;
  57   ChromeBrowserMainExtraPartsMetrics test_target;
  58   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 0);
  59 }
  60
  61 #if defined(USE_OZONE) || defined(USE_X11)
  62
  63 // Verify a TouchEventsEnabled value isn't recorded during PostBrowserStart if
  64 // the device scan hasn't completed yet.
  65 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  66        VerifyTouchEventsEnabledIsNotRecordedAfterPostBrowserStart) {
  67   base::HistogramTester histogram_tester;
  68
  69   ChromeBrowserMainExtraPartsMetrics test_target;
  70
  71   test_target.PostBrowserStart();
  72   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 0);
  73 }
  74
  75 // Verify a TouchEventsEnabled value is recorded during PostBrowserStart if the
  76 // device scan has already completed.
  77 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  78        VerifyTouchEventsEnabledIsRecordedAfterPostBrowserStart) {
  79   base::HistogramTester histogram_tester;
  80
  81   device_data_manager_test_api_.OnDeviceListsComplete();
  82
  83   ChromeBrowserMainExtraPartsMetrics test_target;
  84
  85   test_target.PostBrowserStart();
  86   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
  87 }
  88
  89 // Verify a TouchEventsEnabled value is recorded when an asynchronous device
  90 // scan completes.
  91 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
  92        VerifyTouchEventsEnabledIsRecordedWhenDeviceListsComplete) {
  93   base::HistogramTester histogram_tester;
  94   ChromeBrowserMainExtraPartsMetrics test_target;
  95
  96   test_target.PostBrowserStart();
  97   device_data_manager_test_api_.NotifyObserversDeviceListsComplete();
  98   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
  99 }
 100
 101 // Verify a TouchEventsEnabled value is only recorded once if multiple
 102 // asynchronous device scans happen.
 103 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
 104        VerifyTouchEventsEnabledIsOnlyRecordedOnce) {
 105   base::HistogramTester histogram_tester;
 106   ChromeBrowserMainExtraPartsMetrics test_target;
 107
 108   test_target.PostBrowserStart();
 109   device_data_manager_test_api_.NotifyObserversDeviceListsComplete();
 110   device_data_manager_test_api_.NotifyObserversDeviceListsComplete();
 111   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
 112 }
 113
 114 #else
 115
 116 // Verify a TouchEventsEnabled value is recorded during PostBrowserStart.
 117 TEST_F(ChromeBrowserMainExtraPartsMetricsTest,
 118        VerifyTouchEventsEnabledIsRecordedAfterPostBrowserStart) {
 119   base::HistogramTester histogram_tester;
 120   ChromeBrowserMainExtraPartsMetrics test_target;
 121
 122   test_target.PostBrowserStart();
 123   histogram_tester.ExpectTotalCount(kTouchEventsEnabledHistogramName, 1);
 124 }
 125
 126 #endif  // defined(USE_OZONE) || defined(USE_X11)