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 void UnfoldFlow_should_unfold_Collatz_conjecture_with_a_sequence_of_111_elements_with_buffered_flow()
{
(int, int) Map(int x)
{
if (x == 1)
{
throw _done;
}
if (x % 2 == 0)
{
return(x / 2, x);
}
return(x * 3 + 1, x);
};
Source <int, NotUsed> BufferedSource(int buffSize)
{
return
(SourceGen.UnfoldFlow(27,
Flow.FromFunction <int, (int, int)>(Map)
.Recover(ex =>
{
if (ex == _done)
{
return new Option <(int, int)>((1, 1));
}
return Option <(int, int)> .None;
}), _timeout)
.Buffer(buffSize, OverflowStrategy.Backpressure));
}
var sink = BufferedSource(10).RunWith(this.SinkProbe <int>(), Sys.Materializer());
sink.Request(_outputs.Length);
foreach (var output in _outputs)
{
sink.ExpectNext(output);
}
sink.Request(1);
sink.ExpectNext(1);
sink.ExpectComplete();
}
public void UnfoldFlow_should_unfold_Collatz_conjecture_with_a_sequence_of_111_elements_with_flow()
{
(int, int) Map(int x)
{
if (x == 1)
{
throw _done;
}
if (x % 2 == 0)
{
return(x / 2, x);
}
return(x * 3 + 1, x);
};
var source = SourceGen.UnfoldFlow(27,
Flow.FromFunction <int, (int, int)>(Map)
.Recover(ex =>
{
if (ex == _done)
{
return(new Option <(int, int)>((1, 1)));
}
return(Option <(int, int)> .None);
}),
_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.ExpectNext(1);
sink.ExpectComplete();
}
public WithSimpleFlow()
{
var controlledFlow = Flow.FromSinkAndSource(this.SinkProbe <int>(), this.SourceProbe <(int, int)>(), Keep.Both);
_source = SourceGen.UnfoldFlow(1, controlledFlow, _timeout);
}
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);
}
