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using System;
using System.Threading;
using System.Threading.Tasks;
using NUnit.Framework;
namespace Xamarin.PropertyEditing.Tests
{
[TestFixture]
internal class AsyncWorkQueueTests
{
[SetUp]
public void Setup ()
{
this.queue = new AsyncWorkQueue();
}
[Test, Timeout (1000)]
public async Task FirstRequestIsCompleted ()
{
object requester = new object();
await this.queue.RequestAsyncWork (requester);
}
[Test, Timeout (1000)]
public async Task WorkContinuesOnDispose ()
{
object requester1 = new object();
object requester2 = new object();
IDisposable work = await this.queue.RequestAsyncWork (requester1);
Task<IDisposable> work2 = this.queue.RequestAsyncWork (requester2);
work.Dispose();
await work2;
work2.Dispose();
}
[Test, Timeout (1000)]
public async Task SameRequesterDoesntWait ()
{
object requester = new object();
IDisposable work = await this.queue.RequestAsyncWork (requester);
// If this was not safe to call from the same requester, the test should stop here and timeout
IDisposable work2 = await this.queue.RequestAsyncWork (requester);
work.Dispose();
work2.Dispose();
}
[Test, Timeout (1000)]
[Description ("Worker siblings added while their requester isn't active should ALL unlock when their requester becomes active")]
public async Task SameRequesterAfterNonSameIsFreed ()
{
object requester1 = new object();
object requester2 = new object();
IDisposable work = await this.queue.RequestAsyncWork (requester1);
var inWorkTask = this.queue.RequestAsyncWork (requester2);
Assume.That (inWorkTask.IsCompleted, Is.False);
var inWork2Task = this.queue.RequestAsyncWork (requester2);
Assume.That (inWork2Task.IsCompleted, Is.False);
work.Dispose();
(await inWorkTask).Dispose();
(await inWork2Task).Dispose();
}
[Test, Timeout (1000)]
public async Task WorkContinuesOnDisposeOfParentAndChild ()
{
string requester1 = "r1";
IDisposable parent = await this.queue.RequestAsyncWork (requester1);
IDisposable child = await this.queue.RequestAsyncWork (requester1);
string requester2 = "r2";
Task work2 = this.queue.RequestAsyncWork (requester2);
Assume.That (work2.IsCompleted, Is.False);
child.Dispose();
Assert.That (work2.IsCompleted, Is.False);
parent.Dispose();
await work2;
}
[Test, Timeout (1000)]
public async Task WorkContinuesOnDisposeOfParentAndChildInterspersed ()
{
object requester1 = new object();
IDisposable parent = await this.queue.RequestAsyncWork (requester1);
object requester2 = new object();
Task work2 = this.queue.RequestAsyncWork (requester2);
Assume.That (work2.IsCompleted, Is.False);
IDisposable child = await this.queue.RequestAsyncWork (requester1);
child.Dispose();
Assert.That (work2.IsCompleted, Is.False);
parent.Dispose();
await work2;
}
[Test, Timeout (1000)]
public async Task WorkContinuesOnDisposeOfParentAndChildInterspersed2 ()
{
object requester1 = new object();
IDisposable parent = await this.queue.RequestAsyncWork (requester1);
object requester2 = new object();
Task work2 = this.queue.RequestAsyncWork (requester2);
Assume.That (work2.IsCompleted, Is.False);
IDisposable child = await this.queue.RequestAsyncWork (requester1);
parent.Dispose();
Assert.That (work2.IsCompleted, Is.False);
child.Dispose();
await work2;
}
private AsyncWorkQueue queue;
}
}
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