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Merged
merged 5 commits into from
Apr 13, 2023
Merged

[17-74]FlowIteratorSpec #6561

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54aeaf1
[17-74]`FlowIteratorSpec`
eaba Mar 24, 2023
c09b416
Changes to `async` TestKit
eaba Apr 4, 2023
f2cf263
Merge branch 'dev' into FlowIteratorSpec
eaba Apr 4, 2023
40ceb0b
Merge branch 'dev' into FlowIteratorSpec
eaba Apr 4, 2023
288b196
Merge branch 'dev' into FlowIteratorSpec
eaba Apr 7, 2023
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146 changes: 70 additions & 76 deletions src/core/Akka.Streams.Tests/Dsl/FlowIteratorSpec.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Akka.Pattern;
using Akka.Streams.Dsl;
using Akka.Streams.TestKit;
Expand Down Expand Up @@ -40,7 +41,7 @@ protected override Source<int, NotUsed> CreateSource(int elements)
=> Source.From(Enumerable.Range(1, elements));

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_OnError_when_iterator_throws()
public async Task A_Flow_based_on_an_iterable_must_produce_OnError_when_iterator_throws()
{
var iterable = Enumerable.Range(1, 3).Select(x =>
{
Expand All @@ -51,37 +52,37 @@ public void A_Flow_based_on_an_iterable_must_produce_OnError_when_iterator_throw
var p = Source.From(iterable).RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();
p.Subscribe(c);
var sub = c.ExpectSubscription();
var sub = await c.ExpectSubscriptionAsync();
sub.Request(1);
c.ExpectNext(1);
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectNextAsync(1);
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
EventFilter.Exception<AggregateException>()
.And.Exception<IllegalStateException>("not two").ExpectOne(() => sub.Request(2));
var error = c.ExpectError().InnerException;
error.Message.Should().Be("not two");
sub.Request(2);
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
}

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_OnError_when_Source_construction_throws()
public async Task A_Flow_based_on_an_iterable_must_produce_OnError_when_Source_construction_throws()
{
var p = Source.From(new ThrowEnumerable()).RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();
p.Subscribe(c);
c.ExpectSubscriptionAndError().Message.Should().Be("no good iterator");
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
}

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_OnError_when_MoveNext_throws()
public async Task A_Flow_based_on_an_iterable_must_produce_OnError_when_MoveNext_throws()
{
var p = Source.From(new ThrowEnumerable(false)).RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();
p.Subscribe(c);
var error = c.ExpectSubscriptionAndError().InnerException;
error.Message.Should().Be("no next");
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
}

private sealed class ThrowEnumerable : IEnumerable<int>
Expand Down Expand Up @@ -145,158 +146,151 @@ protected AbstractFlowIteratorSpec(ITestOutputHelper helper) : base(helper)
protected abstract Source<int, NotUsed> CreateSource(int elements);

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_elements()
public async Task A_Flow_based_on_an_iterable_must_produce_elements()
{
this.AssertAllStagesStopped(() =>
{
await this.AssertAllStagesStoppedAsync(async() => {
var p = CreateSource(3).RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c);
var sub = c.ExpectSubscription();
var sub = await c.ExpectSubscriptionAsync();

sub.Request(1);
c.ExpectNext(1);
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectNextAsync(1);
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
sub.Request(3);
c.ExpectNext(2)
await c.ExpectNext(2)
.ExpectNext(3)
.ExpectComplete();
.ExpectCompleteAsync();
}, Materializer);
}

[Fact]
public void A_Flow_based_on_an_iterable_must_complete_empty()
public async Task A_Flow_based_on_an_iterable_must_complete_empty()
{
this.AssertAllStagesStopped(() =>
{
await this.AssertAllStagesStoppedAsync(async() => {
var p = CreateSource(0).RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c);
c.ExpectSubscriptionAndComplete();
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectSubscriptionAndCompleteAsync();
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
}, Materializer);
}

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_elements_with_multiple_subscribers()
public async Task A_Flow_based_on_an_iterable_must_produce_elements_with_multiple_subscribers()
{
this.AssertAllStagesStopped(() =>
{
await this.AssertAllStagesStoppedAsync(async() => {
var p = CreateSource(3).RunWith(Sink.AsPublisher<int>(true), Materializer);
var c1 = this.CreateManualSubscriberProbe<int>();
var c2 = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c1);
p.Subscribe(c2);
var sub1 = c1.ExpectSubscription();
var sub2 = c2.ExpectSubscription();
var sub1 = await c1.ExpectSubscriptionAsync();
var sub2 = await c2.ExpectSubscriptionAsync();
sub1.Request(1);
sub2.Request(2);
c1.ExpectNext(1);
c2.ExpectNext(1);
c2.ExpectNext(2);
c1.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
c2.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c1.ExpectNextAsync(1);
await c2.ExpectNextAsync(1);
await c2.ExpectNextAsync(2);
await c1.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
await c2.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
sub1.Request(2);
sub2.Request(2);
c1.ExpectNext(2);
c1.ExpectNext(3);
c2.ExpectNext(3);
c1.ExpectComplete();
c2.ExpectComplete();
await c1.ExpectNextAsync(2);
await c1.ExpectNextAsync(3);
await c2.ExpectNextAsync(3);
await c1.ExpectCompleteAsync();
await c2.ExpectCompleteAsync();
}, Materializer);
}

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_elements_to_later_subscriber()
public async Task A_Flow_based_on_an_iterable_must_produce_elements_to_later_subscriber()
{
this.AssertAllStagesStopped(() =>
{
await this.AssertAllStagesStoppedAsync(async() => {
var p = CreateSource(3).RunWith(Sink.AsPublisher<int>(true), Materializer);
var c1 = this.CreateManualSubscriberProbe<int>();
var c2 = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c1);
var sub1 = c1.ExpectSubscription();
var sub1 = await c1.ExpectSubscriptionAsync();
sub1.Request(1);
c1.ExpectNext(1, TimeSpan.FromSeconds(60));
c1.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c1.ExpectNextAsync(1, TimeSpan.FromSeconds(60));
await c1.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));

p.Subscribe(c2);
var sub2 = c2.ExpectSubscription();
var sub2 = await c2.ExpectSubscriptionAsync();
sub2.Request(3);
//element 1 is already gone
c2.ExpectNext(2)
await c2.ExpectNext(2)
.ExpectNext(3)
.ExpectComplete();
.ExpectCompleteAsync();

sub1.Request(3);
c1.ExpectNext(2)
await c1.ExpectNext(2)
.ExpectNext(3)
.ExpectComplete();
.ExpectCompleteAsync();
}, Materializer);
}

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_elements_with_one_transformation_step()
public async Task A_Flow_based_on_an_iterable_must_produce_elements_with_one_transformation_step()
{
this.AssertAllStagesStopped(() =>
{
var p = CreateSource(3)
.Select(x => x*2)
.RunWith(Sink.AsPublisher<int>(false), Materializer);
await this.AssertAllStagesStoppedAsync(async () => {
var p = CreateSource(3)
.Select(x => x * 2)
.RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c);
var sub = c.ExpectSubscription();
var sub = await c.ExpectSubscriptionAsync();

sub.Request(10);
c.ExpectNext(2)
await c.ExpectNext(2)
.ExpectNext(4)
.ExpectNext(6)
.ExpectComplete();
.ExpectCompleteAsync();
}, Materializer);
}

[Fact]
public void A_Flow_based_on_an_iterable_must_produce_elements_with_two_transformation_steps()
public async Task A_Flow_based_on_an_iterable_must_produce_elements_with_two_transformation_steps()
{
this.AssertAllStagesStopped(() =>
{
var p = CreateSource(4)
.Where(x => x%2 == 0)
.Select(x => x*2)
.RunWith(Sink.AsPublisher<int>(false), Materializer);
await this.AssertAllStagesStoppedAsync(async () => {
var p = CreateSource(4)
.Where(x => x % 2 == 0)
.Select(x => x * 2)
.RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c);
var sub = c.ExpectSubscription();
var sub = await c.ExpectSubscriptionAsync();

sub.Request(10);
c.ExpectNext(4)
await c.ExpectNext(4)
.ExpectNext(8)
.ExpectComplete();
.ExpectCompleteAsync();
}, Materializer);
}

[Fact]
public void A_Flow_based_on_an_iterable_must_not_produce_after_cancel()
public async Task A_Flow_based_on_an_iterable_must_not_produce_after_cancel()
{
this.AssertAllStagesStopped(() =>
{
await this.AssertAllStagesStoppedAsync(async() => {
var p = CreateSource(3).RunWith(Sink.AsPublisher<int>(false), Materializer);
var c = this.CreateManualSubscriberProbe<int>();

p.Subscribe(c);
var sub = c.ExpectSubscription();
var sub = await c.ExpectSubscriptionAsync();

sub.Request(1);
c.ExpectNext(1);
await c.ExpectNextAsync(1);
sub.Cancel();
sub.Request(2);
c.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
await c.ExpectNoMsgAsync(TimeSpan.FromMilliseconds(100));
}, Materializer);
}
}
Expand Down