| //===---------------------------------------------------------------------===// |
| // statistics_test - Unit tests for src/statistics.cc |
| //===---------------------------------------------------------------------===// |
| |
| #include "../src/statistics.h" |
| #include "gtest/gtest.h" |
| |
| namespace { |
| TEST(StatisticsTest, Mean) { |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsMean({42, 42, 42, 42}), 42.0); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsMean({1, 2, 3, 4}), 2.5); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsMean({1, 2, 5, 10, 10, 14}), 7.0); |
| } |
| |
| TEST(StatisticsTest, Median) { |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsMedian({42, 42, 42, 42}), 42.0); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsMedian({1, 2, 3, 4}), 2.5); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsMedian({1, 2, 5, 10, 10}), 5.0); |
| } |
| |
| TEST(StatisticsTest, StdDev) { |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsStdDev({101, 101, 101, 101}), 0.0); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsStdDev({1, 2, 3}), 1.0); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsStdDev({2.5, 2.4, 3.3, 4.2, 5.1}), |
| 1.151086443322134); |
| } |
| |
| TEST(StatisticsTest, CV) { |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsCV({101, 101, 101, 101}), 0.0); |
| EXPECT_DOUBLE_EQ(benchmark::StatisticsCV({1, 2, 3}), 1. / 2.); |
| ASSERT_NEAR(benchmark::StatisticsCV({2.5, 2.4, 3.3, 4.2, 5.1}), |
| 0.32888184094918121, 1e-15); |
| } |
| |
| } // end namespace |