src/chrome/browser/translate/translate_browser_metrics_unittest.cc

   1 // Copyright 2013 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/translate/translate_browser_metrics.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/metrics/histogram.h"
  10 #include "base/metrics/histogram_samples.h"
  11 #include "base/metrics/statistics_recorder.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13 #include "testing/platform_test.h"
  14
  15 using base::HistogramBase;
  16 using base::HistogramSamples;
  17 using base::StatisticsRecorder;
  18
  19 namespace {
  20
  21 class MetricsRecorder {
  22  public:
  23   explicit MetricsRecorder(const char* key) : key_(key) {
  24     StatisticsRecorder::Initialize();
  25
  26     HistogramBase* histogram = StatisticsRecorder::FindHistogram(key_);
  27     if (histogram)
  28       base_samples_ = histogram->SnapshotSamples();
  29   }
  30
  31   void CheckInitiationStatus(int expected_disabled_by_prefs,
  32                              int expected_disabled_by_switch,
  33                              int expected_disabled_by_config,
  34                              int expected_language_is_not_supported,
  35                              int expected_mime_type_is_not_supported,
  36                              int expected_url_is_not_supported,
  37                              int expected_similar_languages,
  38                              int expected_accept_languages,
  39                              int expected_auto_by_config,
  40                              int expected_auto_by_link,
  41                              int expected_show_infobar) {
  42     Snapshot();
  43
  44     EXPECT_EQ(expected_disabled_by_prefs, GetCountWithoutSnapshot(
  45         TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_PREFS));
  46     EXPECT_EQ(expected_disabled_by_switch, GetCountWithoutSnapshot(
  47         TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_SWITCH));
  48     EXPECT_EQ(expected_disabled_by_config, GetCountWithoutSnapshot(
  49         TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_CONFIG));
  50     EXPECT_EQ(expected_language_is_not_supported, GetCountWithoutSnapshot(
  51         TranslateBrowserMetrics::INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED));
  52     EXPECT_EQ(expected_mime_type_is_not_supported, GetCountWithoutSnapshot(
  53         TranslateBrowserMetrics::INITIATION_STATUS_MIME_TYPE_IS_NOT_SUPPORTED));
  54     EXPECT_EQ(expected_url_is_not_supported, GetCountWithoutSnapshot(
  55         TranslateBrowserMetrics::INITIATION_STATUS_URL_IS_NOT_SUPPORTED));
  56     EXPECT_EQ(expected_similar_languages, GetCountWithoutSnapshot(
  57         TranslateBrowserMetrics::INITIATION_STATUS_SIMILAR_LANGUAGES));
  58     EXPECT_EQ(expected_accept_languages, GetCountWithoutSnapshot(
  59         TranslateBrowserMetrics::INITIATION_STATUS_ACCEPT_LANGUAGES));
  60     EXPECT_EQ(expected_auto_by_config, GetCountWithoutSnapshot(
  61         TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_CONFIG));
  62     EXPECT_EQ(expected_auto_by_link, GetCountWithoutSnapshot(
  63         TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_LINK));
  64     EXPECT_EQ(expected_show_infobar, GetCountWithoutSnapshot(
  65         TranslateBrowserMetrics::INITIATION_STATUS_SHOW_INFOBAR));
  66   }
  67
  68   HistogramBase::Count GetTotalCount() {
  69     Snapshot();
  70     if (!samples_.get())
  71       return 0;
  72     HistogramBase::Count count = samples_->TotalCount();
  73     if (!base_samples_.get())
  74       return count;
  75     return count - base_samples_->TotalCount();
  76   }
  77
  78   HistogramBase::Count GetCount(HistogramBase::Sample value) {
  79     Snapshot();
  80     return GetCountWithoutSnapshot(value);
  81   }
  82
  83  private:
  84   void Snapshot() {
  85     HistogramBase* histogram = StatisticsRecorder::FindHistogram(key_);
  86     if (!histogram)
  87       return;
  88     samples_ = histogram->SnapshotSamples();
  89   }
  90
  91   HistogramBase::Count GetCountWithoutSnapshot(HistogramBase::Sample value) {
  92     if (!samples_.get())
  93       return 0;
  94     HistogramBase::Count count = samples_->GetCount(value);
  95     if (!base_samples_.get())
  96       return count;
  97     return count - base_samples_->GetCount(value);
  98   }
  99
 100   std::string key_;
 101   scoped_ptr<HistogramSamples> base_samples_;
 102   scoped_ptr<HistogramSamples> samples_;
 103
 104   DISALLOW_COPY_AND_ASSIGN(MetricsRecorder);
 105 };
 106
 107 }  // namespace
 108
 109 TEST(TranslateBrowserMetricsTest, ReportInitiationStatus) {
 110   MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
 111       TranslateBrowserMetrics::UMA_INITIATION_STATUS));
 112
 113   recorder.CheckInitiationStatus(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 114   TranslateBrowserMetrics::ReportInitiationStatus(
 115       TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_PREFS);
 116   recorder.CheckInitiationStatus(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 117   TranslateBrowserMetrics::ReportInitiationStatus(
 118       TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_SWITCH);
 119   recorder.CheckInitiationStatus(1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 120   TranslateBrowserMetrics::ReportInitiationStatus(
 121       TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_CONFIG);
 122   recorder.CheckInitiationStatus(1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 123   TranslateBrowserMetrics::ReportInitiationStatus(
 124       TranslateBrowserMetrics::INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED);
 125   recorder.CheckInitiationStatus(1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0);
 126   TranslateBrowserMetrics::ReportInitiationStatus(
 127       TranslateBrowserMetrics::INITIATION_STATUS_MIME_TYPE_IS_NOT_SUPPORTED);
 128   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0);
 129   TranslateBrowserMetrics::ReportInitiationStatus(
 130       TranslateBrowserMetrics::INITIATION_STATUS_URL_IS_NOT_SUPPORTED);
 131   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0);
 132   TranslateBrowserMetrics::ReportInitiationStatus(
 133       TranslateBrowserMetrics::INITIATION_STATUS_SIMILAR_LANGUAGES);
 134   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0);
 135   TranslateBrowserMetrics::ReportInitiationStatus(
 136       TranslateBrowserMetrics::INITIATION_STATUS_ACCEPT_LANGUAGES);
 137   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0);
 138   TranslateBrowserMetrics::ReportInitiationStatus(
 139       TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_CONFIG);
 140   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0);
 141   TranslateBrowserMetrics::ReportInitiationStatus(
 142       TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_LINK);
 143   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0);
 144   TranslateBrowserMetrics::ReportInitiationStatus(
 145       TranslateBrowserMetrics::INITIATION_STATUS_SHOW_INFOBAR);
 146   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1);
 147 }
 148
 149 TEST(TranslateBrowserMetricsTest, ReportLanguageDetectionError) {
 150   MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
 151       TranslateBrowserMetrics::UMA_LANGUAGE_DETECTION_ERROR));
 152   EXPECT_EQ(0, recorder.GetTotalCount());
 153   TranslateBrowserMetrics::ReportLanguageDetectionError();
 154   EXPECT_EQ(1, recorder.GetTotalCount());
 155
 156 }
 157
 158
 159 TEST(TranslateBrowserMetricsTest, ReportedLocalesOnDisabledByPrefs) {
 160   const int ENGLISH = 25966;
 161
 162   MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
 163       TranslateBrowserMetrics::UMA_LOCALES_ON_DISABLED_BY_PREFS));
 164   EXPECT_EQ(0, recorder.GetTotalCount());
 165   TranslateBrowserMetrics::ReportLocalesOnDisabledByPrefs("en");
 166   EXPECT_EQ(1, recorder.GetCount(ENGLISH));
 167 }
 168
 169 TEST(TranslateBrowserMetricsTest, ReportedUndisplayableLanguage) {
 170   const int ENGLISH = 25966;
 171
 172   MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
 173       TranslateBrowserMetrics::UMA_UNDISPLAYABLE_LANGUAGE));
 174   EXPECT_EQ(0, recorder.GetTotalCount());
 175   TranslateBrowserMetrics::ReportUndisplayableLanguage("en");
 176   EXPECT_EQ(1, recorder.GetCount(ENGLISH));
 177 }
 178
 179 TEST(TranslateBrowserMetricsTest, ReportedUnsupportedLanguageAtInitiation) {
 180   const int ENGLISH = 25966;
 181
 182   MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
 183       TranslateBrowserMetrics::UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION));
 184   EXPECT_EQ(0, recorder.GetTotalCount());
 185   TranslateBrowserMetrics::ReportUnsupportedLanguageAtInitiation("en");
 186   EXPECT_EQ(1, recorder.GetCount(ENGLISH));
 187 }