public void A_FLow_with_a_Sink_HeadOption_must_yield_default_for_empty_stream()
{
this.AssertAllStagesStopped(() =>
{
var task = Source.Empty<int>().RunWith(Sink.FirstOrDefault<int>(), Materializer);
task.Wait(TimeSpan.FromSeconds(1)).Should().BeTrue();
task.Result.Should().Be(0);
}, Materializer);
}
}