components/translate/core/browser/translate_browser_metrics_unittest.cc

   1 // Copyright 2014 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 "components/translate/core/browser/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,
  45               GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  46                                           INITIATION_STATUS_DISABLED_BY_PREFS));
  47     EXPECT_EQ(
  48         expected_disabled_by_switch,
  49         GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  50                                     INITIATION_STATUS_DISABLED_BY_SWITCH));
  51     EXPECT_EQ(
  52         expected_disabled_by_config,
  53         GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  54                                     INITIATION_STATUS_DISABLED_BY_CONFIG));
  55     EXPECT_EQ(expected_language_is_not_supported,
  56               GetCountWithoutSnapshot(
  57                   translate::TranslateBrowserMetrics::
  58                       INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED));
  59     EXPECT_EQ(expected_mime_type_is_not_supported,
  60               GetCountWithoutSnapshot(
  61                   translate::TranslateBrowserMetrics::
  62                       INITIATION_STATUS_MIME_TYPE_IS_NOT_SUPPORTED));
  63     EXPECT_EQ(
  64         expected_url_is_not_supported,
  65         GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  66                                     INITIATION_STATUS_URL_IS_NOT_SUPPORTED));
  67     EXPECT_EQ(expected_similar_languages,
  68               GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  69                                           INITIATION_STATUS_SIMILAR_LANGUAGES));
  70     EXPECT_EQ(expected_accept_languages,
  71               GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  72                                           INITIATION_STATUS_ACCEPT_LANGUAGES));
  73     EXPECT_EQ(expected_auto_by_config,
  74               GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  75                                           INITIATION_STATUS_AUTO_BY_CONFIG));
  76     EXPECT_EQ(expected_auto_by_link,
  77               GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  78                                           INITIATION_STATUS_AUTO_BY_LINK));
  79     EXPECT_EQ(expected_show_infobar,
  80               GetCountWithoutSnapshot(translate::TranslateBrowserMetrics::
  81                                           INITIATION_STATUS_SHOW_INFOBAR));
  82   }
  83
  84   HistogramBase::Count GetTotalCount() {
  85     Snapshot();
  86     if (!samples_.get())
  87       return 0;
  88     HistogramBase::Count count = samples_->TotalCount();
  89     if (!base_samples_.get())
  90       return count;
  91     return count - base_samples_->TotalCount();
  92   }
  93
  94   HistogramBase::Count GetCount(HistogramBase::Sample value) {
  95     Snapshot();
  96     return GetCountWithoutSnapshot(value);
  97   }
  98
  99  private:
 100   void Snapshot() {
 101     HistogramBase* histogram = StatisticsRecorder::FindHistogram(key_);
 102     if (!histogram)
 103       return;
 104     samples_ = histogram->SnapshotSamples();
 105   }
 106
 107   HistogramBase::Count GetCountWithoutSnapshot(HistogramBase::Sample value) {
 108     if (!samples_.get())
 109       return 0;
 110     HistogramBase::Count count = samples_->GetCount(value);
 111     if (!base_samples_.get())
 112       return count;
 113     return count - base_samples_->GetCount(value);
 114   }
 115
 116   std::string key_;
 117   scoped_ptr<HistogramSamples> base_samples_;
 118   scoped_ptr<HistogramSamples> samples_;
 119
 120   DISALLOW_COPY_AND_ASSIGN(MetricsRecorder);
 121 };
 122
 123 }  // namespace
 124
 125 TEST(TranslateBrowserMetricsTest, ReportInitiationStatus) {
 126   MetricsRecorder recorder(translate::TranslateBrowserMetrics::GetMetricsName(
 127       translate::TranslateBrowserMetrics::UMA_INITIATION_STATUS));
 128
 129   recorder.CheckInitiationStatus(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 130   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 131       translate::TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_PREFS);
 132   recorder.CheckInitiationStatus(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 133   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 134       translate::TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_SWITCH);
 135   recorder.CheckInitiationStatus(1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
 136   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 137       translate::TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_CONFIG);
 138   recorder.CheckInitiationStatus(1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 139   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 140       translate::TranslateBrowserMetrics::
 141           INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED);
 142   recorder.CheckInitiationStatus(1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0);
 143   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 144       translate::TranslateBrowserMetrics::
 145           INITIATION_STATUS_MIME_TYPE_IS_NOT_SUPPORTED);
 146   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0);
 147   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 148       translate::TranslateBrowserMetrics::
 149           INITIATION_STATUS_URL_IS_NOT_SUPPORTED);
 150   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0);
 151   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 152       translate::TranslateBrowserMetrics::INITIATION_STATUS_SIMILAR_LANGUAGES);
 153   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0);
 154   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 155       translate::TranslateBrowserMetrics::INITIATION_STATUS_ACCEPT_LANGUAGES);
 156   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0);
 157   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 158       translate::TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_CONFIG);
 159   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0);
 160   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 161       translate::TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_LINK);
 162   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0);
 163   translate::TranslateBrowserMetrics::ReportInitiationStatus(
 164       translate::TranslateBrowserMetrics::INITIATION_STATUS_SHOW_INFOBAR);
 165   recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1);
 166 }
 167
 168 TEST(TranslateBrowserMetricsTest, ReportLanguageDetectionError) {
 169   MetricsRecorder recorder(translate::TranslateBrowserMetrics::GetMetricsName(
 170       translate::TranslateBrowserMetrics::UMA_LANGUAGE_DETECTION_ERROR));
 171   EXPECT_EQ(0, recorder.GetTotalCount());
 172   translate::TranslateBrowserMetrics::ReportLanguageDetectionError();
 173   EXPECT_EQ(1, recorder.GetTotalCount());
 174
 175 }
 176
 177
 178 TEST(TranslateBrowserMetricsTest, ReportedLocalesOnDisabledByPrefs) {
 179   const int ENGLISH = 25966;
 180
 181   MetricsRecorder recorder(translate::TranslateBrowserMetrics::GetMetricsName(
 182       translate::TranslateBrowserMetrics::UMA_LOCALES_ON_DISABLED_BY_PREFS));
 183   EXPECT_EQ(0, recorder.GetTotalCount());
 184   translate::TranslateBrowserMetrics::ReportLocalesOnDisabledByPrefs("en");
 185   EXPECT_EQ(1, recorder.GetCount(ENGLISH));
 186 }
 187
 188 TEST(TranslateBrowserMetricsTest, ReportedUndisplayableLanguage) {
 189   const int ENGLISH = 25966;
 190
 191   MetricsRecorder recorder(translate::TranslateBrowserMetrics::GetMetricsName(
 192       translate::TranslateBrowserMetrics::UMA_UNDISPLAYABLE_LANGUAGE));
 193   EXPECT_EQ(0, recorder.GetTotalCount());
 194   translate::TranslateBrowserMetrics::ReportUndisplayableLanguage("en");
 195   EXPECT_EQ(1, recorder.GetCount(ENGLISH));
 196 }
 197
 198 TEST(TranslateBrowserMetricsTest, ReportedUnsupportedLanguageAtInitiation) {
 199   const int ENGLISH = 25966;
 200
 201   MetricsRecorder recorder(translate::TranslateBrowserMetrics::GetMetricsName(
 202       translate::TranslateBrowserMetrics::
 203           UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION));
 204   EXPECT_EQ(0, recorder.GetTotalCount());
 205   translate::TranslateBrowserMetrics::ReportUnsupportedLanguageAtInitiation(
 206       "en");
 207   EXPECT_EQ(1, recorder.GetCount(ENGLISH));
 208 }