public override TestResult[] Execute(ITestMethod testMethod)
{
TestResult[] errorResults = ValidateElevated(testMethod);
if (errorResults != null)
{
return(errorResults);
}
Exception signatureException = GetMethodSignatureException(testMethod);
if (signatureException != null)
{
return(testMethod.CreateExceptionResult(signatureException));
}
var runParameters = TestRunParameters.Read();
string logFolder = runParameters.LogFolder;
bool shouldLog = !string.IsNullOrEmpty(logFolder);
if (shouldLog)
{
try
{
logFolder = CreateLogFolder(logFolder, testMethod.TestMethodName);
}
catch (Exception e)
{
return(testMethod.CreateExceptionResult(e));
}
}
int iterations = runParameters.Iterations;
var results = new TestResult[iterations];
for (int iteration = 1; iteration <= iterations; iteration++)
{
string sessionName = $"{testMethod.TestMethodName}-{iteration}";
using (var session = new TraceEventSession(sessionName))
{
EnableKernelProviders(session, shouldLog);
TraceEventDispatcher source;
ZippedETLWriter writer = null;
if (shouldLog)
{
string etlPath = Path.Combine(logFolder, $"Iteration{iteration}.etl");
source = new ETWReloggerTraceEventSource(sessionName, TraceEventSourceType.Session, etlPath);
writer = new ZippedETLWriter(etlPath);
}
else
{
source = session.Source;
}
EnableProviders(session);
PerformanceTestContext context = CreateContext(source);
Task <TestResult> testTask = Task.Run(() => testMethod.Invoke(new object[] { context }));
// This is a blocking call that in the case of ETWReloggerTraceEventSource, must be run on the same
// thread as ETWReloggerTraceEventSource was created on. It will become unblocked when the
// PerformanceTestContext calls StopProcessing on the source.
source.Process();
TestResult result = testTask.Result;
string displayName = testMethod.TestMethodName;
if (iterations > 1)
{
displayName += $" [{iteration}/{iterations}]";
}
result.DisplayName = displayName;
session.Flush();
OnIterationEnded(context);
context.LogScenarios();
context.LogMemoryDelta();
context.LogMessage($"{displayName} completed. {session.EventsLost} events lost.");
context.WriteLogsToResult(result, writer);
results[iteration - 1] = result;
}
}
return(results);
}