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De-flake HubsDocTests dynamic merge: async expectation with an explicit 10s timeout #8664

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Merged
Aaronontheweb merged 1 commit into from
Sep 29, 2026
Merged

De-flake HubsDocTests dynamic merge: async expectation with an explicit 10s timeout #8664

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7 changes: 5 additions & 2 deletions src/core/Akka.Docs.Tests/Streams/HubsDocTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ public HubsDocTests(ITestOutputHelper output)
}

[Fact]
public void Hubs_must_demonstrate_creating_a_dynamic_merge()
public async Task Hubs_must_demonstrate_creating_a_dynamic_merge()
{
void WriteLine(string s) => TestActor.Tell(s);

Expand All @@ -53,7 +53,10 @@ public void Hubs_must_demonstrate_creating_a_dynamic_merge()
Source.Single("Hub!").RunWith(toConsumer, Materializer);
#endregion

ExpectMsgAllOf(new []{ "Hello!", "Hub!"});
// MergeHub queues producers that start before the hub stage does, so both
// elements always arrive; only the timing varies. The 3s default was too
// tight for three materializations on a stalled 2-vCPU CI agent.
await ExpectMsgAllOfAsync(TimeSpan.FromSeconds(10), new[] { "Hello!", "Hub!" }).ToListAsync();
}

[Fact]
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