public async Task <IList <MutationDocumentResult> > Handle(ExecuteMutationsCommand command, CancellationToken cancellationToken)
{
var semaphoreSlim = new SemaphoreSlim(command.Config.NumberOfTestRunInstances, command.Config.NumberOfTestRunInstances);
var results = new List <MutationDocumentResult>();
var mutationDocuments = new Queue <MutationDocument>(command.MutationDocuments);
var currentRunningDocuments = new List <Task>();
var numberOfMutationsLeft = command.MutationDocuments.Count;
var mutationRunLoggers = command.Config.MutationRunLoggers?.Select(m => _mutationRunLoggerFactory.GetMutationRunLogger(m)).ToList() ?? new List <IMutationRunLogger>();
LogTo.Info($"Total number of mutations generated: {numberOfMutationsLeft}");
mutationRunLoggers.ForEach(m => m.LogBeforeRun(command.MutationDocuments));
await Task.Run(() =>
{
while (mutationDocuments.Any())
{
semaphoreSlim.Wait();
var document = mutationDocuments.Dequeue();
currentRunningDocuments.Add(Task.Run(async() =>
{
MutationDocumentResult result = null;
try
{
mutationRunLoggers.ForEach(m => m.LogBeforeMutation(document));
command.MutationDocumentStartedCallback?.Invoke(document);
var resultTask = _mutationDocumentExecutor.ExecuteMutationAsync(command.Config, document);
result = await resultTask;
}
catch (Exception ex)
{
LogTo.WarnException($"Unexpected exception when running {document.MutationName}", ex);
result = new MutationDocumentResult
{
Id = document.Id,
UnexpectedError = ex.Message
};
}
finally
{
lock (results)
{
results.Add(result);
var survived = results.Count(r => r.Survived && (r.CompilationResult != null && r.CompilationResult.IsSuccess) && r.UnexpectedError == null);
var killed = results.Count(r => !r.Survived && (r.CompilationResult != null && r.CompilationResult.IsSuccess) && r.UnexpectedError == null);
var compileErrors = results.Count(r => r.CompilationResult != null && !r.CompilationResult.IsSuccess);
var unknownErrors = results.Count(r => r.UnexpectedError != null);
Interlocked.Decrement(ref numberOfMutationsLeft);
LogTo.Info($"Current progress: {{ Survived: {survived}, Killed: {killed}, CompileErrors: {compileErrors}, UnknownErrors: {unknownErrors}, MutationsLeft: {numberOfMutationsLeft} }}");
mutationRunLoggers.ForEach(m => m.LogAfterMutation(document, results, numberOfMutationsLeft));
}
semaphoreSlim.Release();
command.MutationDocumentCompledtedCallback?.Invoke(result);
}
}));
}
});
// Wait for the final ones
await Task.WhenAll(currentRunningDocuments);
if (results.Any())
{
LogTo.Info($"Your mutation score: {GetMutationScore(results)}%");
}
return(results);
}
private TimeSpan GetExpectedExecutionTime(ExecuteMutationsCommand command)
{
return(TimeSpan.FromMinutes(command.Config.BaselineInfos.Sum(b => b.ExecutionTime.TotalMinutes) * command.MutationDocuments.Count / command.Config.NumberOfTestRunInstances));
}
