A benchmarking macro for GoogleTest

Benchmark

#define Test(TestSuiteName, TestCaseName) void TestSuiteName##_##TestCaseName()
#define Benchmark_N(TestSuiteName, TestCaseName, numberOfIterations) \
  void Benchmark_##TestSuiteName##_##TestCaseName(); \
  Test(TestSuiteName, TestCaseName) {\
    typedef std::chrono::high_resolution_clock clock_t;\
    typedef std::chrono::duration<double, std::micro> duration_t;\
    double totalDuration = 0; \
    double squaredDuration = 0;\
    for (std::size_t i = 0; i < numberOfIterations; ++i) {\
      clock_t::time_point start = clock_t::now();\
      Benchmark_##TestSuiteName##_##TestCaseName();\
      clock_t::time_point end = clock_t::now();\
      duration_t duration = std::chrono::duration_cast<duration_t>(end - start);\
      double microseconds = duration.count();\
      totalDuration += microseconds;\
      squaredDuration += (microseconds * microseconds);\
    }\
    double average = totalDuration / numberOfIterations;\
    double variance = (squaredDuration / numberOfIterations) - (average * average);\
    double standardDeviation = std::sqrt(variance);\
    totalDuration /= 1e6;\
    std::cout\
      << "Total execution time: " << totalDuration << " s | "\
      << "Average execution time: " << average << " us | "\
      << "Standard deviation: " << standardDeviation << " us"\
      << std::endl;\
  }\
  void Benchmark_##TestSuiteName##_##TestCaseName()
#define Benchmark(TestSuiteName, TestCaseName) Benchmark_N(TestSuiteName, TestCaseName, 1000000)