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refactor scheduler tests to use testprobe #2302

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Aug 21, 2025
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refactor scheduler tests to use testprobe #2302

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65 changes: 13 additions & 52 deletions tests/Proto.Actor.Tests/SchedulerTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
using System.Threading.Tasks;
using System.Threading;
using Microsoft.Extensions.Time.Testing;
using Proto.TestKit;
using Proto.Timers;
using Xunit;

Expand All @@ -14,53 +15,27 @@ public async Task SendOnceWorksWithTimeProvider()
{
await using var system = new ActorSystem();
var context = system.Root;
var tcs = new TaskCompletionSource();
var pid = context.Spawn(Props.FromFunc(context =>
{
if (context.Message is "Wakeup")
{
tcs.SetResult();
}
var probe = new TestProbe();
var pid = context.Spawn(Props.FromProducer(() => probe));

return Task.CompletedTask;
}));
var timeProvider = new FakeTimeProvider();
var hook = new TestSchedulerHook();
var scheduler = context.Scheduler(timeProvider, hook);

scheduler.SendOnce(TimeSpan.FromSeconds(10), pid, "Wakeup");
await hook.WaitAsync();
timeProvider.Advance(TimeSpan.FromMinutes(10));
await tcs.Task.WaitAsync(TimeSpan.FromMilliseconds(10));
var msg = await probe.GetNextMessageAsync<string>(TimeSpan.FromMilliseconds(10));
Assert.Equal("Wakeup", msg);
}

[Fact]
public async Task SendRepeatedlyCanBeCancelled()
{
await using var system = new ActorSystem();
var context = system.Root;
var count = 0;
var firstMessage = new TaskCompletionSource();
var extraMessage = new TaskCompletionSource();

var pid = context.Spawn(Props.FromFunc(ctx =>
{
if (ctx.Message is "Tick")
{
count++;

if (count == 1)
{
firstMessage.SetResult();
}
else
{
extraMessage.SetResult();
}
}

return Task.CompletedTask;
}));
var probe = new TestProbe();
var pid = context.Spawn(Props.FromProducer(() => probe));

var timeProvider = new FakeTimeProvider();
var hook = new TestSchedulerHook();
Expand All @@ -70,33 +45,20 @@ public async Task SendRepeatedlyCanBeCancelled()

await hook.WaitAsync();
timeProvider.Advance(TimeSpan.FromMinutes(1));
await firstMessage.Task.WaitAsync(TimeSpan.FromMilliseconds(10));
await probe.GetNextMessageAsync<string>(TimeSpan.FromMilliseconds(10));

cts.Cancel();

timeProvider.Advance(TimeSpan.FromMinutes(1));
await Task.Delay(50);

Assert.Equal(1, count);
Assert.False(extraMessage.Task.IsCompleted);
await probe.ExpectNoMessageAsync(TimeSpan.FromMilliseconds(50));
}

[Fact]
public async Task SendOnceCanBeCancelled()
{
await using var system = new ActorSystem();
var context = system.Root;
var tcs = new TaskCompletionSource();

var pid = context.Spawn(Props.FromFunc(ctx =>
{
if (ctx.Message is "Wakeup")
{
tcs.SetResult();
}

return Task.CompletedTask;
}));
var probe = new TestProbe();
var pid = context.Spawn(Props.FromProducer(() => probe));

var timeProvider = new FakeTimeProvider();
var hook = new TestSchedulerHook();
Expand All @@ -106,11 +68,10 @@ public async Task SendOnceCanBeCancelled()

await hook.WaitAsync();
cts.Cancel();

timeProvider.Advance(TimeSpan.FromMinutes(1));
await Task.Delay(50);

Assert.False(tcs.Task.IsCompleted);
timeProvider.Advance(TimeSpan.FromMinutes(1));
await probe.ExpectNoMessageAsync(TimeSpan.FromMilliseconds(50));
}

[Fact]
Expand Down
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