public async Task ReportsExceptionsWithReferenceTypes()
{
var inputValues = AsyncEnumerableProvider.GetObjects(100);
Func <DummyClass, Task <DummyClass> > action = async(DummyClass input) =>
{
await Task.Delay(10);
if (input.MyInt % 10 == 0)
{
throw new Exception("We don't like 10s");
}
return(new DummyClass(input.MyInt * 2));
};
var results = new ConcurrentBag <Result <DummyClass, DummyClass> >();
await foreach (var result in inputValues.SafeParallelAsyncWithResult(action))
{
results.Add(result);
}
results.Count().ShouldBe(100);
results.Count(r => r.Success).ShouldBe(90);
results.Count(r => !r.Success).ShouldBe(10);
results.First(r => !r.Success).Exception.ShouldNotBeNull();
results.First(r => !r.Success).Exception.Message.ShouldBe("We don't like 10s");
results.Select(r => r.Input.MyInt).ShouldBe(Enumerable.Range(1, 100), true);
results.First(r => !r.Success).Output.ShouldBe(null);
}
public async Task HandlesReferenceTypes()
{
var inputValues = AsyncEnumerableProvider.GetObjects(100);
var expected = Enumerable.Range(1, 100).Sum(i => i * 2);
int actual = 0;
Func <DummyClass, Task <DummyClass> > action = async(DummyClass input) =>
{
await Task.Delay(10);
return(new DummyClass(input.MyInt * 2));
};
await foreach (var result in inputValues.SafeParallelAsyncWithResult(action))
{
actual += result.Output.MyInt;
}
actual.ShouldBe(expected);
}
