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