public void Interpreter_error_handling_should_fail_when_OnPull_throws()
{
var stage = new RestartTestStage(onPull: (stg, context) =>
{
if (stg.Sum < 0)
{
throw TE();
}
return(null);
});
WithOneBoundedSetup(new IStage <int, int>[] {
new Select <int, int>(x => x + 1, resumingDecider),
stage,
new Select <int, int>(x => x + 100, resumingDecider)
},
(lastEvents, upstream, downstream) =>
{
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(2);
lastEvents().Should().BeEquivalentTo(new OnNext(103));
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(-5); // this will trigger failure of next requestOne (pull)
lastEvents().Should().BeEquivalentTo(new OnNext(99));
downstream.RequestOne(); // boom
lastEvents().Should().BeEquivalentTo(new OnError(TE()), new Cancel());
});
}
public void Interpreter_error_handling_should_restart_when_OnPush_throws()
{
var stage = new RestartTestStage(onPush: (_, element, context) =>
{
if (element <= 0)
{
throw TE();
}
return(null);
});
WithOneBoundedSetup(new IStage <int, int>[] {
new Select <int, int>(x => x + 1, resumingDecider),
stage,
new Select <int, int>(x => x + 100, resumingDecider)
},
(lastEvents, upstream, downstream) =>
{
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(2);
lastEvents().Should().BeEquivalentTo(new OnNext(103));
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(-1); // boom
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(3);
lastEvents().Should().BeEquivalentTo(new OnNext(104));
});
}
public void Interpreter_error_handling_should_restart_when_OnPush_throws_after_context_Push()
{
var stage = new RestartTestStage(onPush: (_, element, context) =>
{
var result = context.Push(element);
if (element <= 0)
{
throw TE();
}
return(result);
});
WithOneBoundedSetup(new IStage <int, int>[] {
new Select <int, int>(x => x + 1, resumingDecider),
stage,
new Select <int, int>(x => x + 100, resumingDecider)
},
(lastEvents, upstream, downstream) =>
{
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(2);
lastEvents().Should().BeEquivalentTo(new OnNext(103));
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(-1); // boom
// The element has been pushed before the exception, there is no way back
lastEvents().Should().BeEquivalentTo(new OnNext(100));
downstream.RequestOne();
lastEvents().Should().BeEquivalentTo(new RequestOne());
upstream.OnNext(3);
lastEvents().Should().BeEquivalentTo(new OnNext(104));
});
}
