forked from akkadotnet/akka.net
/
ActorRefSourceSpec.cs
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/
ActorRefSourceSpec.cs
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//-----------------------------------------------------------------------
// <copyright file="ActorRefSourceSpec.cs" company="Akka.NET Project">
// Copyright (C) 2009-2021 Lightbend Inc. <http://www.lightbend.com>
// Copyright (C) 2013-2021 .NET Foundation <https://github.com/akkadotnet/akka.net>
// </copyright>
//-----------------------------------------------------------------------
using System;
using System.Linq;
using Akka.Actor;
using Akka.Streams.Dsl;
using Akka.Streams.TestKit;
using Akka.Streams.TestKit.Tests;
using Akka.TestKit;
using Akka.Util.Internal;
using FluentAssertions;
using Xunit;
// ReSharper disable InvokeAsExtensionMethod
namespace Akka.Streams.Tests.Dsl
{
public class ActorRefSourceSpec : AkkaSpec
{
private ActorMaterializer Materializer { get; }
public ActorRefSourceSpec()
{
var settings = ActorMaterializerSettings.Create(Sys);
Materializer = ActorMaterializer.Create(Sys, settings);
}
[Fact]
public void A_ActorRefSource_must_emit_received_messages_to_the_stream()
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(10, OverflowStrategy.Fail)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
var sub = s.ExpectSubscription();
sub.Request(2);
actorRef.Tell(1);
s.ExpectNext(1);
actorRef.Tell(2);
s.ExpectNext(2);
actorRef.Tell(3);
s.ExpectNoMsg(TimeSpan.FromMilliseconds(500));
}
[Fact]
public void A_ActorRefSource_must_buffer_when_needed()
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(100, OverflowStrategy.DropHead)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
var sub = s.ExpectSubscription();
Enumerable.Range(1, 20).ForEach(x => actorRef.Tell(x));
sub.Request(10);
Enumerable.Range(1, 10).ForEach(x => s.ExpectNext(x));
sub.Request(10);
Enumerable.Range(11, 10).ForEach(x => s.ExpectNext(x));
Enumerable.Range(200, 200).ForEach(x => actorRef.Tell(x));
sub.Request(100);
Enumerable.Range(300, 100).ForEach(x => s.ExpectNext(x));
}
[Fact]
public void A_ActorRefSource_must_drop_new_when_full_and_with_DropNew_strategy()
{
var t = Source.ActorRef<int>(100, OverflowStrategy.DropNew)
.ToMaterialized(this.SinkProbe<int>(), Keep.Both)
.Run(Materializer);
var actorRef = t.Item1;
var sub = t.Item2;
Enumerable.Range(1, 20).ForEach(x => actorRef.Tell(x));
sub.Request(10);
Enumerable.Range(1, 10).ForEach(x => sub.ExpectNext(x));
sub.Request(10);
Enumerable.Range(11, 10).ForEach(x => sub.ExpectNext(x));
Enumerable.Range(200, 200).ForEach(x => actorRef.Tell(x));
sub.Request(100);
Enumerable.Range(200, 100).ForEach(x => sub.ExpectNext(x));
}
[Fact]
public void A_ActorRefSource_must_terminate_when_the_stream_is_cancelled()
{
this.AssertAllStagesStopped(() =>
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(0, OverflowStrategy.Fail)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
Watch(actorRef);
var sub = s.ExpectSubscription();
sub.Cancel();
ExpectTerminated(actorRef);
}, Materializer);
}
[Fact]
public void A_ActorRefSource_must_not_fail_when_0_buffer_space_and_demand_is_signalled()
{
this.AssertAllStagesStopped(() =>
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(0, OverflowStrategy.DropHead)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
Watch(actorRef);
var sub = s.ExpectSubscription();
sub.Request(100);
sub.Cancel();
ExpectTerminated(actorRef);
}, Materializer);
}
[Fact]
public void A_ActorRefSource_must_signal_buffered_elements_and_complete_the_stream_after_receiving_Status_Success()
{
this.AssertAllStagesStopped(() =>
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(10, OverflowStrategy.Fail)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
var sub = s.ExpectSubscription();
actorRef.Tell(1);
actorRef.Tell(2);
actorRef.Tell(3);
actorRef.Tell(new Status.Success("ok"));
sub.Request(10);
s.ExpectNext(1, 2, 3);
s.ExpectComplete();
}, Materializer);
}
[Fact]
public void A_ActorRefSource_must_not_buffer_elements_after_receiving_Status_Success()
{
this.AssertAllStagesStopped(() =>
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(3, OverflowStrategy.DropBuffer)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
var sub = s.ExpectSubscription();
actorRef.Tell(1);
actorRef.Tell(2);
actorRef.Tell(3);
actorRef.Tell(new Status.Success("ok"));
actorRef.Tell(100);
actorRef.Tell(100);
actorRef.Tell(100);
sub.Request(10);
s.ExpectNext(1, 2, 3);
s.ExpectComplete();
}, Materializer);
}
[Fact]
public void A_ActorRefSource_must_complete_and_materialize_the_stream_after_receiving_Status_Success()
{
this.AssertAllStagesStopped(() =>
{
var (actorRef, done) = Source.ActorRef<int>(3, OverflowStrategy.DropBuffer)
.ToMaterialized(Sink.Ignore<int>(), Keep.Both)
.Run(Materializer);
actorRef.Tell(new Status.Success("ok"));
done.ContinueWith(_ => Done.Instance).Result.Should().Be(Done.Instance);
}, Materializer);
}
[Fact]
public void A_ActorRefSource_must_fail_the_stream_when_receiving_Status_Failure()
{
this.AssertAllStagesStopped(() =>
{
var s = this.CreateManualSubscriberProbe<int>();
var actorRef = Source.ActorRef<int>(10, OverflowStrategy.Fail)
.To(Sink.FromSubscriber(s))
.Run(Materializer);
s.ExpectSubscription();
var ex = new TestException("testfailure");
actorRef.Tell(new Status.Failure(ex));
s.ExpectError().Should().Be(ex);
}, Materializer);
}
[Fact]
public void A_ActorRefSource_must_set_actor_name_equal_to_stage_name()
{
this.AssertAllStagesStopped(() =>
{
var s = this.CreateManualSubscriberProbe<int>();
const string name = "SomeCustomName";
var actorRef = Source.ActorRef<int>(10, OverflowStrategy.Fail)
.WithAttributes(Attributes.CreateName(name))
.To(Sink.FromSubscriber(s))
.Run(Materializer);
actorRef.Path.ToString().Should().Contain(name);
actorRef.Tell(PoisonPill.Instance);
}, Materializer);
}
}
}