chrome/browser/ui/webui/ntp/ntp_user_data_logger_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/ui/webui/ntp/ntp_user_data_logger.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/metrics/histogram.h"
   9 #include "base/metrics/statistics_recorder.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "chrome/common/ntp_logging_events.h"
  12 #include "content/public/test/test_browser_thread_bundle.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace {
  16
  17 class TestNTPUserDataLogger : public NTPUserDataLogger {
  18  public:
  19   TestNTPUserDataLogger() : NTPUserDataLogger(NULL) {}
  20   ~TestNTPUserDataLogger() override {}
  21 };
  22
  23 base::HistogramBase::Count GetTotalCount(const std::string& histogram_name) {
  24   base::HistogramBase* histogram = base::StatisticsRecorder::FindHistogram(
  25       histogram_name);
  26   // Return 0 if history is uninitialized.
  27   return histogram ? histogram->SnapshotSamples()->TotalCount() : 0;
  28 }
  29
  30 base::HistogramBase::Count GetBinCount(const std::string& histogram_name,
  31                                        base::HistogramBase::Sample value) {
  32   base::HistogramBase* histogram = base::StatisticsRecorder::FindHistogram(
  33       histogram_name);
  34   // Return 0 if history is uninitialized.
  35   return histogram ? histogram->SnapshotSamples()->GetCount(value) : 0;
  36 }
  37
  38 }  // namespace
  39
  40 class NTPUserDataLoggerTest : public testing::Test {
  41   content::TestBrowserThreadBundle thread_bundle_;
  42 };
  43
  44 TEST_F(NTPUserDataLoggerTest, TestLogging) {
  45   base::StatisticsRecorder::Initialize();
  46
  47   // Ensure empty statistics.
  48   EXPECT_EQ(0, GetTotalCount("NewTabPage.NumberOfMouseOvers"));
  49   EXPECT_EQ(0, GetBinCount("NewTabPage.NumberOfMouseOvers", 0));
  50
  51   // Enusure non-zero statistics.
  52   TestNTPUserDataLogger logger;
  53
  54   base::TimeDelta delta = base::TimeDelta::FromMilliseconds(0);
  55
  56   for (int i = 0; i < 20; ++i)
  57     logger.LogEvent(NTP_MOUSEOVER, delta);
  58   for (int i = 0; i < 8; ++i)
  59     logger.LogEvent(NTP_TILE, delta);
  60   for (int i = 0; i < 4; ++i)
  61     logger.LogEvent(NTP_THUMBNAIL_TILE, delta);
  62   for (int i = 0; i < 2; ++i)
  63     logger.LogEvent(NTP_THUMBNAIL_ERROR, delta);
  64   logger.LogEvent(NTP_GRAY_TILE_FALLBACK, delta);
  65   logger.LogEvent(NTP_EXTERNAL_TILE_FALLBACK, delta);
  66   for (int i = 0; i < 2; ++i)
  67     logger.LogEvent(NTP_EXTERNAL_TILE, delta);
  68   for (int i = 0; i < 2; ++i)
  69     logger.LogEvent(NTP_GRAY_TILE, delta);
  70   logger.LogEvent(NTP_SERVER_SIDE_SUGGESTION, delta);
  71
  72   logger.EmitNtpStatistics();
  73
  74   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfMouseOvers"));
  75   EXPECT_EQ(0, GetBinCount("NewTabPage.NumberOfMouseOvers", 0));
  76   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfMouseOvers", 20));
  77   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfTiles"));
  78   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfTiles", 8));
  79   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailTiles"));
  80   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfThumbnailTiles", 4));
  81   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailErrors"));
  82   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfThumbnailErrors", 2));
  83   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTileFallbacks"));
  84   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfGrayTileFallbacks", 1));
  85   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTileFallbacks"));
  86   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfExternalTileFallbacks", 1));
  87   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTiles"));
  88   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfExternalTiles", 2));
  89   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTiles"));
  90   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfGrayTiles", 2));
  91   EXPECT_EQ(1, GetTotalCount("NewTabPage.SuggestionsType"));
  92   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsType", 1));
  93
  94   // Statistics should be reset to 0, so we should not log anything else.
  95   logger.EmitNtpStatistics();
  96   EXPECT_EQ(2, GetTotalCount("NewTabPage.NumberOfMouseOvers"));
  97   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfMouseOvers", 0));
  98   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfMouseOvers", 20));
  99   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfTiles"));
 100   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailTiles"));
 101   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailErrors"));
 102   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTileFallbacks"));
 103   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTileFallbacks"));
 104   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTiles"));
 105   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTiles"));
 106   EXPECT_EQ(1, GetTotalCount("NewTabPage.SuggestionsType"));
 107 }
 108
 109 TEST_F(NTPUserDataLoggerTest, TestLogMostVisitedImpression) {
 110   base::StatisticsRecorder::Initialize();
 111
 112   EXPECT_EQ(0, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 113   EXPECT_EQ(0, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 114
 115   TestNTPUserDataLogger logger;
 116
 117   logger.LogMostVisitedImpression(1, base::ASCIIToUTF16("foobar"));
 118   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 119   EXPECT_EQ(0, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 120
 121   logger.LogMostVisitedImpression(5, base::ASCIIToUTF16("foobar"));
 122   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 123   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 124
 125   // Try without provider. Only total increases.
 126   logger.LogMostVisitedImpression(5, base::ASCIIToUTF16(""));
 127   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 128   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 129
 130   logger.LogMostVisitedImpression(1, base::ASCIIToUTF16("foobar"));
 131   EXPECT_EQ(2, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 132   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 133 }
 134
 135 TEST_F(NTPUserDataLoggerTest, TestLogMostVisitedNavigation) {
 136   base::StatisticsRecorder::Initialize();
 137
 138   EXPECT_EQ(0, GetTotalCount("NewTabPage.MostVisited"));
 139   EXPECT_EQ(0, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 140   EXPECT_EQ(0, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 141
 142   TestNTPUserDataLogger logger;
 143
 144   logger.LogMostVisitedNavigation(1, base::ASCIIToUTF16("foobar"));
 145   EXPECT_EQ(1, GetTotalCount("NewTabPage.MostVisited"));
 146   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 147   EXPECT_EQ(0, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 148
 149   logger.LogMostVisitedNavigation(5, base::ASCIIToUTF16("foobar"));
 150   EXPECT_EQ(2, GetTotalCount("NewTabPage.MostVisited"));
 151   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 152   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 153
 154   // Try without provider. Only total increases.
 155   logger.LogMostVisitedNavigation(5, base::ASCIIToUTF16(""));
 156   EXPECT_EQ(3, GetTotalCount("NewTabPage.MostVisited"));
 157   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 158   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 159
 160   logger.LogMostVisitedNavigation(1, base::ASCIIToUTF16("foobar"));
 161   EXPECT_EQ(4, GetTotalCount("NewTabPage.MostVisited"));
 162   EXPECT_EQ(2, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 163   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 164 }