1 //===---------------------------------------------------------------------===// 2 // statistics_test - Unit tests for src/statistics.cc 3 //===---------------------------------------------------------------------===// 4 5 #include "../src/statistics.h" 6 #include "gtest/gtest.h" 7 8 namespace { 9 TEST(StatisticsTest, Mean) { 10 std::vector<double> Inputs; 11 { 12 Inputs = {42, 42, 42, 42}; 13 double Res = benchmark::StatisticsMean(Inputs); 14 EXPECT_DOUBLE_EQ(Res, 42.0); 15 } 16 { 17 Inputs = {1, 2, 3, 4}; 18 double Res = benchmark::StatisticsMean(Inputs); 19 EXPECT_DOUBLE_EQ(Res, 2.5); 20 } 21 { 22 Inputs = {1, 2, 5, 10, 10, 14}; 23 double Res = benchmark::StatisticsMean(Inputs); 24 EXPECT_DOUBLE_EQ(Res, 7.0); 25 } 26 } 27 28 TEST(StatisticsTest, Median) { 29 std::vector<double> Inputs; 30 { 31 Inputs = {42, 42, 42, 42}; 32 double Res = benchmark::StatisticsMedian(Inputs); 33 EXPECT_DOUBLE_EQ(Res, 42.0); 34 } 35 { 36 Inputs = {1, 2, 3, 4}; 37 double Res = benchmark::StatisticsMedian(Inputs); 38 EXPECT_DOUBLE_EQ(Res, 2.5); 39 } 40 { 41 Inputs = {1, 2, 5, 10, 10}; 42 double Res = benchmark::StatisticsMedian(Inputs); 43 EXPECT_DOUBLE_EQ(Res, 5.0); 44 } 45 } 46 47 TEST(StatisticsTest, StdDev) { 48 std::vector<double> Inputs; 49 { 50 Inputs = {101, 101, 101, 101}; 51 double Res = benchmark::StatisticsStdDev(Inputs); 52 EXPECT_DOUBLE_EQ(Res, 0.0); 53 } 54 { 55 Inputs = {1, 2, 3}; 56 double Res = benchmark::StatisticsStdDev(Inputs); 57 EXPECT_DOUBLE_EQ(Res, 1.0); 58 } 59 } 60 61 } // end namespace 62
