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Convert Akka.Stream.TestKit to async - TestPublisherSubscriberSpec #5913

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merged 1 commit into from
May 4, 2022
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Convert Akka.Stream.TestKit to async - TestPublisherSubscriberSpec #5913

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36 changes: 20 additions & 16 deletions src/core/Akka.Streams.TestKit.Tests/TestPublisherSubscriberSpec.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
// </copyright>
//-----------------------------------------------------------------------

using System.Threading.Tasks;
using Akka.Streams.Dsl;
using Akka.TestKit;
using FluentAssertions;
Expand All @@ -24,55 +25,58 @@ public TestPublisherSubscriberSpec(ITestOutputHelper output = null) : base(outpu
}

[Fact]
public void TestPublisher_and_TestSubscriber_should_have_all_events_accessible_from_manual_probes()
public async Task TestPublisher_and_TestSubscriber_should_have_all_events_accessible_from_manual_probes()
{
this.AssertAllStagesStopped(() =>
await this.AssertAllStagesStoppedAsync( async() =>
{
var upstream = this.CreateManualPublisherProbe<int>();
var downstream = this.CreateManualSubscriberProbe<int>();
Source.FromPublisher(upstream)
.RunWith(Sink.AsPublisher<int>(false), Materializer)
.Subscribe(downstream);

var upstreamSubscription = upstream.ExpectSubscription();
object evt = downstream.ExpectEvent();
var upstreamSubscription = await upstream.ExpectSubscriptionAsync();
object evt = await downstream.ExpectEventAsync();
evt.Should().BeOfType<TestSubscriber.OnSubscribe>();
var downstreamSubscription = ((TestSubscriber.OnSubscribe) evt).Subscription;

upstreamSubscription.SendNext(1);
downstreamSubscription.Request(1);
evt = upstream.ExpectEvent();
evt = await upstream.ExpectEventAsync();
evt.Should().BeOfType<TestPublisher.RequestMore>();
((TestPublisher.RequestMore) evt).NrOfElements.Should().Be(1);
evt = downstream.ExpectEvent();
evt = await downstream.ExpectEventAsync();
evt.Should().BeOfType<TestSubscriber.OnNext<int>>();
((TestSubscriber.OnNext<int>) evt).Element.Should().Be(1);

upstreamSubscription.SendNext(1);
downstreamSubscription.Request(1);
downstream.ExpectNext(1);
await downstream.ExpectNextAsync(1).Task;

upstreamSubscription.SendComplete();
evt = downstream.ExpectEvent();
evt = await downstream.ExpectEventAsync();
evt.Should().BeOfType<TestSubscriber.OnComplete>();
}, Materializer);
}

// "handle gracefully partial function that is not suitable" does not apply

[Fact]
public void TestPublisher_and_TestSubscriber_should_properly_update_PendingRequest_in_ExpectRequest()
public async Task TestPublisher_and_TestSubscriber_should_properly_update_PendingRequest_in_ExpectRequest()
{
var upstream = this.CreatePublisherProbe<int>();
var downstream = this.CreateSubscriberProbe<int>();
await this.AssertAllStagesStoppedAsync(async () =>
{
var upstream = this.CreatePublisherProbe<int>();
var downstream = this.CreateSubscriberProbe<int>();

Source.FromPublisher(upstream).RunWith(Sink.FromSubscriber(downstream), Materializer);
Source.FromPublisher(upstream).RunWith(Sink.FromSubscriber(downstream), Materializer);

downstream.ExpectSubscription().Request(10);
(await downstream.ExpectSubscriptionAsync()).Request(10);

upstream.ExpectRequest().Should().Be(10);
upstream.SendNext(1);
downstream.ExpectNext(1);
(await upstream.ExpectRequestAsync()).Should().Be(10);
upstream.SendNext(1);
await downstream.ExpectNextAsync(1).Task;
}, Materializer);
}
}
}