public void GraphInterpreter_should_implement_buffer()
{
WithTestSetup((setup, builder, lastEvents) =>
{
var source = setup.NewUpstreamProbe <string>("source");
var sink = setup.NewDownstreamProbe <string>("sink");
var buffer =
new PushPullGraphStage <string, string>(
a => new Buffer <string>(2, OverflowStrategy.Backpressure), Attributes.None);
builder(buffer)
.Connect(source, buffer.Shape.Inlet)
.Connect(buffer.Shape.Outlet, sink)
.Init();
setup.StepAll();
lastEvents().Should().BeEquivalentTo(new RequestOne(source));
sink.RequestOne();
lastEvents().Should().BeEmpty();
source.OnNext("A");
lastEvents().Should().BeEquivalentTo(new OnNext(sink, "A"), new RequestOne(source));
source.OnNext("B");
lastEvents().Should().BeEquivalentTo(new RequestOne(source));
source.OnNext("C", eventLimit: 0);
sink.RequestOne();
lastEvents().Should().BeEquivalentTo(new OnNext(sink, "B"), new RequestOne(source));
sink.RequestOne(eventLimit: 0);
source.OnComplete(eventLimit: 3);
lastEvents().Should().BeEquivalentTo(new OnNext(sink, "C"));
sink.RequestOne();
lastEvents().Should().BeEquivalentTo(new OnComplete(sink));
});
}
public void GraphInterpreter_should_implement_buffer()
{
WithTestSetup((setup, builder, lastEvents) =>
{
var source = setup.NewUpstreamProbe<string>("source");
var sink = setup.NewDownstreamProbe<string>("sink");
var buffer =
new PushPullGraphStage<string, string>(
a => new Buffer<string>(2, OverflowStrategy.Backpressure), Attributes.None);
builder(buffer)
.Connect(source, buffer.Shape.Inlet)
.Connect(buffer.Shape.Outlet, sink)
.Init();
setup.StepAll();
lastEvents().Should().BeEquivalentTo(new RequestOne(source));
sink.RequestOne();
lastEvents().Should().BeEmpty();
source.OnNext("A");
lastEvents().Should().BeEquivalentTo(new OnNext(sink, "A"), new RequestOne(source));
source.OnNext("B");
lastEvents().Should().BeEquivalentTo(new RequestOne(source));
source.OnNext("C", eventLimit: 0);
sink.RequestOne();
lastEvents().Should().BeEquivalentTo(new OnNext(sink, "B"), new RequestOne(source));
sink.RequestOne(eventLimit: 0);
source.OnComplete(eventLimit: 3);
lastEvents().Should().BeEquivalentTo(new OnNext(sink, "C"));
sink.RequestOne();
lastEvents().Should().BeEquivalentTo(new OnComplete(sink));
});
}
