src/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   for (int i = 0; i < 20; ++i)
  50     logger.LogEvent(NTP_MOUSEOVER);
  51   for (int i = 0; i < 8; ++i)
  52     logger.LogEvent(NTP_TILE);
  53   for (int i = 0; i < 4; ++i)
  54     logger.LogEvent(NTP_THUMBNAIL_TILE);
  55   for (int i = 0; i < 2; ++i)
  56     logger.LogEvent(NTP_THUMBNAIL_ERROR);
  57   logger.LogEvent(NTP_GRAY_TILE_FALLBACK);
  58   logger.LogEvent(NTP_EXTERNAL_TILE_FALLBACK);
  59   for (int i = 0; i < 2; ++i)
  60     logger.LogEvent(NTP_EXTERNAL_TILE);
  61   for (int i = 0; i < 2; ++i)
  62     logger.LogEvent(NTP_GRAY_TILE);
  63   logger.LogEvent(NTP_SERVER_SIDE_SUGGESTION);
  64
  65   logger.EmitNtpStatistics();
  66
  67   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfMouseOvers"));
  68   EXPECT_EQ(0, GetBinCount("NewTabPage.NumberOfMouseOvers", 0));
  69   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfMouseOvers", 20));
  70   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfTiles"));
  71   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfTiles", 8));
  72   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailTiles"));
  73   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfThumbnailTiles", 4));
  74   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailErrors"));
  75   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfThumbnailErrors", 2));
  76   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTileFallbacks"));
  77   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfGrayTileFallbacks", 1));
  78   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTileFallbacks"));
  79   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfExternalTileFallbacks", 1));
  80   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTiles"));
  81   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfExternalTiles", 2));
  82   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTiles"));
  83   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfGrayTiles", 2));
  84   EXPECT_EQ(1, GetTotalCount("NewTabPage.SuggestionsType"));
  85   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsType", 1));
  86
  87   // Statistics should be reset to 0, so we should not log anything else.
  88   logger.EmitNtpStatistics();
  89   EXPECT_EQ(2, GetTotalCount("NewTabPage.NumberOfMouseOvers"));
  90   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfMouseOvers", 0));
  91   EXPECT_EQ(1, GetBinCount("NewTabPage.NumberOfMouseOvers", 20));
  92   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfTiles"));
  93   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailTiles"));
  94   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfThumbnailErrors"));
  95   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTileFallbacks"));
  96   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTileFallbacks"));
  97   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfExternalTiles"));
  98   EXPECT_EQ(1, GetTotalCount("NewTabPage.NumberOfGrayTiles"));
  99   EXPECT_EQ(1, GetTotalCount("NewTabPage.SuggestionsType"));
 100 }
 101
 102 TEST(NTPUserDataLoggerTest, TestLogMostVisitedImpression) {
 103   base::StatisticsRecorder::Initialize();
 104
 105   EXPECT_EQ(0, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 106   EXPECT_EQ(0, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 107
 108   TestNTPUserDataLogger logger;
 109
 110   logger.LogMostVisitedImpression(1, base::ASCIIToUTF16("foobar"));
 111   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 112   EXPECT_EQ(0, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 113
 114   logger.LogMostVisitedImpression(5, base::ASCIIToUTF16("foobar"));
 115   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 116   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 117
 118   // Try without provider. Only total increases.
 119   logger.LogMostVisitedImpression(5, base::ASCIIToUTF16(""));
 120   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 121   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 122
 123   logger.LogMostVisitedImpression(1, base::ASCIIToUTF16("foobar"));
 124   EXPECT_EQ(2, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 1));
 125   EXPECT_EQ(1, GetBinCount("NewTabPage.SuggestionsImpression.foobar", 5));
 126 }
 127
 128 TEST(NTPUserDataLoggerTest, TestLogMostVisitedNavigation) {
 129   base::StatisticsRecorder::Initialize();
 130
 131   EXPECT_EQ(0, GetTotalCount("NewTabPage.MostVisited"));
 132   EXPECT_EQ(0, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 133   EXPECT_EQ(0, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 134
 135   TestNTPUserDataLogger logger;
 136
 137   logger.LogMostVisitedNavigation(1, base::ASCIIToUTF16("foobar"));
 138   EXPECT_EQ(1, GetTotalCount("NewTabPage.MostVisited"));
 139   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 140   EXPECT_EQ(0, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 141
 142   logger.LogMostVisitedNavigation(5, base::ASCIIToUTF16("foobar"));
 143   EXPECT_EQ(2, GetTotalCount("NewTabPage.MostVisited"));
 144   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 145   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 146
 147   // Try without provider. Only total increases.
 148   logger.LogMostVisitedNavigation(5, base::ASCIIToUTF16(""));
 149   EXPECT_EQ(3, GetTotalCount("NewTabPage.MostVisited"));
 150   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 151   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 152
 153   logger.LogMostVisitedNavigation(1, base::ASCIIToUTF16("foobar"));
 154   EXPECT_EQ(4, GetTotalCount("NewTabPage.MostVisited"));
 155   EXPECT_EQ(2, GetBinCount("NewTabPage.MostVisited.foobar", 1));
 156   EXPECT_EQ(1, GetBinCount("NewTabPage.MostVisited.foobar", 5));
 157 }