public void UsableIfExceptionInOutputSpecificFilterOccurs()
{
Mock <IHealthReporter> healthReporterMock = new Mock <IHealthReporter>();
UnitTestOutput unitTestOutput = new UnitTestOutput();
DiagnosticPipelineConfiguration settings = new DiagnosticPipelineConfiguration()
{
MaxBatchDelayMsec = 10,
PipelineCompletionTimeoutMsec = 10000,
MaxEventBatchSize = 2
};
UnitTestFilter unitTestFilter = new UnitTestFilter();
unitTestFilter.EvaluationFailureCondition = "Trouble == true";
const int TestEventCount = 6;
DateTime pipelineDisposalStart;
using (UnitTestInput unitTestInput = new UnitTestInput())
using (DiagnosticPipeline pipeline = new DiagnosticPipeline(
healthReporterMock.Object,
new IObservable <EventData>[] { unitTestInput },
null,
new EventSink[] { new EventSink(unitTestOutput, new IFilter[] { unitTestFilter }) },
settings))
{
// Half of the events should cause filtering to fail with an exception
for (int i = 0; i < TestEventCount; i++)
{
if (i % 2 == 0)
{
unitTestInput.SendData(new Dictionary <string, object> {
["Trouble"] = true
});
}
else
{
unitTestInput.SendMessage("Hi!");
}
}
pipelineDisposalStart = DateTime.Now;
}
// We should have got good events and warnings about bad events
DateTime pipelineDisposalEnd = DateTime.Now;
// We should have got good events and warnings about bad events
Assert.True(TestEventCount / 2 == unitTestOutput.EventCount,
$"Events missing: expected: {TestEventCount / 2}, " +
$"actual: {unitTestOutput.EventCount}, " +
$"filter invocations: {unitTestFilter.CallCount}, " +
$"pipeline disposal time: {(pipelineDisposalEnd - pipelineDisposalStart).TotalMilliseconds} msec");
healthReporterMock.Verify(o => o.ReportWarning(It.IsAny <string>(), It.Is <string>(s => s == EventFlowContextIdentifiers.Filtering)), Times.Exactly(TestEventCount / 2));
}
public async Task CanDisposePipelineStuckInAFilter()
{
Mock <IHealthReporter> healthReporterMock = new Mock <IHealthReporter>();
UnitTestOutput unitTestOutput = new UnitTestOutput();
const int CompletionTimeoutMsec = 1000;
DiagnosticPipelineConfiguration settings = new DiagnosticPipelineConfiguration()
{
MaxBatchDelayMsec = 10,
PipelineCompletionTimeoutMsec = CompletionTimeoutMsec,
MaxEventBatchSize = 1,
PipelineBufferSize = 1,
MaxConcurrency = 1
};
UnitTestFilter unitTestFilter = new UnitTestFilter();
unitTestFilter.EvaluationDelay = TimeSpan.MaxValue;
Stopwatch stopwatch;
using (UnitTestInput unitTestInput = new UnitTestInput())
using (DiagnosticPipeline pipeline = new DiagnosticPipeline(
healthReporterMock.Object,
new IObservable <EventData>[] { unitTestInput },
new IFilter[] { unitTestFilter },
new EventSink[] { new EventSink(unitTestOutput, null) },
settings))
{
// Saturate the pipeline
for (int i = 0; i < 10; i++)
{
unitTestInput.SendMessage("Hi!");
}
// Wait a little bit for the pipeline to process messages and get stuck in the filter.
await Task.Delay(TimeSpan.FromMilliseconds(100));
stopwatch = Stopwatch.StartNew();
}
stopwatch.Stop();
// We should have received no events on the output side--everything should have been stuck in the filter (or dropped because of buffer overflow)
Assert.Equal(0, unitTestOutput.CallCount);
// Ensure the pipeline stops within the timeout (plus some padding)
Assert.InRange(stopwatch.ElapsedMilliseconds, 0, CompletionTimeoutMsec + 200);
}
public async Task UsableIfExceptionInOutputSpecificFilterOccurs()
{
Mock <IHealthReporter> healthReporterMock = new Mock <IHealthReporter>();
UnitTestOutput unitTestOutput = new UnitTestOutput();
DiagnosticPipelineConfiguration settings = new DiagnosticPipelineConfiguration()
{
MaxBatchDelayMsec = 10,
PipelineCompletionTimeoutMsec = 1000,
MaxEventBatchSize = 2
};
UnitTestFilter unitTestFilter = new UnitTestFilter();
unitTestFilter.EvaluationFailureCondition = "Trouble == true";
const int TestEventCount = 6;
using (UnitTestInput unitTestInput = new UnitTestInput())
using (DiagnosticPipeline pipeline = new DiagnosticPipeline(
healthReporterMock.Object,
new IObservable <EventData>[] { unitTestInput },
null,
new EventSink[] { new EventSink(unitTestOutput, new IFilter[] { unitTestFilter }) },
settings))
{
// Half of the events should cause filtering to fail with an exception
for (int i = 0; i < TestEventCount; i++)
{
if (i % 2 == 0)
{
unitTestInput.SendData(new Dictionary <string, object> {
["Trouble"] = true
});
}
else
{
unitTestInput.SendMessage("Hi!");
}
}
// Wait for the pipeline to drain.
await Task.Delay(TimeSpan.FromMilliseconds(300));
// We should have got good events and warnings about bad events
Assert.Equal(TestEventCount / 2, unitTestOutput.EventCount);
healthReporterMock.Verify(o => o.ReportWarning(It.IsAny <string>(), It.Is <string>(s => s == EventFlowContextIdentifiers.Filtering)), Times.Exactly(TestEventCount / 2));
}
}
