public void UnfoldFlow_should_unfold_Collatz_conjecture_with_a_sequence_of_111_elements_with_function()
{
Option <Tuple <int, int> > Map(int x)
{
if (x == 1)
{
return(Option <Tuple <int, int> > .None);
}
if (x % 2 == 0)
{
return(new Option <Tuple <int, int> >(Tuple.Create(x / 2, x)));
}
return(new Option <Tuple <int, int> >(Tuple.Create(x * 3 + 1, x)));
}
var source = SourceGen.UnfoldFlowWith(27, Flow.FromFunction <int, int>(x => x), Map, _timeout);
var sink = source.RunWith(this.SinkProbe <int>(), Sys.Materializer());
foreach (var output in _outputs)
{
sink.Request(1);
sink.ExpectNext(output);
}
sink.Request(1);
sink.ExpectComplete();
}
public WithFunction()
{
var controlledFlow = Flow.FromSinkAndSource(this.SinkProbe <int>(), this.SourceProbe <int>(), Keep.Both);
_source = SourceGen.UnfoldFlowWith(1, controlledFlow, n => new Option <Tuple <int, int> >(Tuple.Create(n + 1, n)), _timeout);
}