csharp4405de34 | 1 | using CascadeIDE.Cockpit.DataBus; |
| 2 | using Xunit; |
| 3 | |
| 4 | namespace CascadeIDE.Tests; |
| 5 | |
| 6 | public sealed class InMemoryDataBusTests |
| 7 | { |
| 8 | [Fact] |
| 9 | public void Publish_sync_mode_delivers_immediately() |
| 10 | { |
| 11 | using var bus = new InMemoryDataBus(asynchronousDispatch: false); |
| 12 | var delivered = false; |
| 13 | using var sub = bus.Subscribe<BuildStateChanged>(evt => delivered = evt.IsBuilding); |
| 14 | |
| 15 | bus.Publish(new BuildStateChanged(true)); |
| 16 | |
| 17 | Assert.True(delivered); |
| 18 | } |
| 19 | |
| 20 | [Fact] |
| 21 | public void Publish_sync_mode_isolates_faulty_subscriber() |
| 22 | { |
| 23 | using var bus = new InMemoryDataBus(asynchronousDispatch: false); |
| 24 | var delivered = false; |
| 25 | using var sub1 = bus.Subscribe<BuildStateChanged>(_ => throw new InvalidOperationException("boom")); |
| 26 | using var sub2 = bus.Subscribe<BuildStateChanged>(evt => delivered = evt.IsBuilding); |
| 27 | |
| 28 | bus.Publish(new BuildStateChanged(true)); |
| 29 | |
| 30 | Assert.True(delivered); |
| 31 | } |
| 32 | |
| 33 | [Fact] |
| 34 | public void Publish_async_mode_eventually_delivers() |
| 35 | { |
| 36 | using var bus = new InMemoryDataBus(asynchronousDispatch: true); |
| 37 | var delivered = 0; |
| 38 | using var sub = bus.Subscribe<BuildStateChanged>(evt => |
| 39 | { |
| 40 | if (evt.IsBuilding) |
| 41 | Interlocked.Exchange(ref delivered, 1); |
| 42 | }); |
| 43 | |
| 44 | bus.Publish(new BuildStateChanged(true)); |
| 45 | |
| 46 | Assert.True(SpinWait.SpinUntil(() => Volatile.Read(ref delivered) == 1, millisecondsTimeout: 1000)); |
| 47 | } |
| 48 | } |
| 49 | |
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