[InlineData(2, 300)] // keep the values small since there's a real delay involved
public void ShouldComputeMetricsCorrectly(int iterationCount, int millisecondRuntime)
{
var assertionOutput = new ActionBenchmarkOutput((report, warmup) =>
{
if (warmup) return;
var counterResults = report.Metrics[CounterName];
var projectedThroughput = 1000/(double)IterationSpeedMs; // roughly the max value of this counter
var observedDifference =
Math.Abs(projectedThroughput - counterResults.MetricValuePerSecond);
Assert.True(observedDifference <= 1.5d, $"delta between expected value and actual measured value should be <= 1.5, was {observedDifference} [{counterResults.MetricValuePerSecond} op /s]. Expected [{projectedThroughput} op /s]");
}, results =>
{
var counterResults = results.Data.StatsByMetric[CounterName].Stats.Max;
Assert.Equal(iterationCount, counterResults);
});
var counterBenchmark = new CounterBenchmarkSetting(CounterName.CounterName, AssertionType.Total, Assertion.Empty);
var gcBenchmark = new GcBenchmarkSetting(GcMetric.TotalCollections, GcGeneration.AllGc, AssertionType.Total,
Assertion.Empty);
var memoryBenchmark = new MemoryBenchmarkSetting(MemoryMetric.TotalBytesAllocated, Assertion.Empty);
var settings = new BenchmarkSettings(TestMode.Measurement, RunMode.Throughput, iterationCount, millisecondRuntime,
new[] { gcBenchmark }, new[] { memoryBenchmark }, new[] { counterBenchmark });
var benchmark = new Benchmark(settings, _benchmarkMethods, assertionOutput);
benchmark.Run();
}
public void ShouldComputeMetricsCorrectly(int iterationCount)
{
var assertionOutput = new ActionBenchmarkOutput((report, warmup) =>
{
if (!warmup)
{
var counterResults = report.Metrics[CounterName];
Assert.Equal(1, counterResults.MetricValue);
}
}, results =>
{
var counterResults = results.Data.StatsByMetric[CounterName].Stats.Max;
Assert.Equal(iterationCount, counterResults);
});
var counterBenchmark = new CounterBenchmarkSetting(CounterName.CounterName, AssertionType.Total, Assertion.Empty);
var gcBenchmark = new GcBenchmarkSetting(GcMetric.TotalCollections, GcGeneration.AllGc, AssertionType.Total,
Assertion.Empty);
var memoryBenchmark = new MemoryBenchmarkSetting(MemoryMetric.TotalBytesAllocated, Assertion.Empty);
var settings = new BenchmarkSettings(TestMode.Measurement, RunMode.Iterations, iterationCount, 1000,
new[] { gcBenchmark }, new MemoryBenchmarkSetting[0], new[] {counterBenchmark});
var benchmark = new Benchmark(settings, _benchmarkMethods, assertionOutput);
benchmark.Run();
}
public void Should_exit_on_first_iteration_where_Benchmark_throws_Exception()
{
var iterationCount = 0;
var expectedIterationCount = 0;
bool finalOutputCalled = false;
IBenchmarkInvoker faultyInvoker = new ActionBenchmarkInvoker("ExceptionThrower",
context =>
{
throw new Exception("poorly written spec");
});
IBenchmarkOutput faultyOutput = new ActionBenchmarkOutput(
(report, isWarmup) =>
{
iterationCount++; //should run exactly once during pre-warmup
Assert.True(report.IsFaulted);
}, results =>
{
finalOutputCalled = true;
Assert.True(results.Data.IsFaulted);
}, ActionBenchmarkOutput.DefaultWriteLineAction);
var benchmark = new Benchmark(_faultySettings, faultyInvoker, faultyOutput);
benchmark.Run();
benchmark.Finish();
Assert.Equal(expectedIterationCount, iterationCount);
Assert.True(finalOutputCalled);
}
public void ShouldExecuteCorrectWarmupCount(int iterationCount)
{
var observedWarmupCount = -1; //we have a pre-warmup that always happens no matter what. Need to account for it.
var assertionOutput = new ActionBenchmarkOutput((report, warmup) =>
{
if (warmup)
{
observedWarmupCount++;
}
}, results =>
{
Assert.Equal(iterationCount, observedWarmupCount);
});
var counterBenchmark = new CounterBenchmarkSetting(CounterName.CounterName, AssertionType.Total, Assertion.Empty);
var settings = new BenchmarkSettings(TestMode.Measurement, RunMode.Iterations, iterationCount, 1000,
new List<IBenchmarkSetting>() { counterBenchmark }, new Dictionary<MetricName, MetricsCollectorSelector>() {
{ counterBenchmark.MetricName, new CounterSelector() } });
var benchmark = new Benchmark(settings, _benchmarkMethods, assertionOutput);
benchmark.Run();
}