public override async Task DisposeAsyncReleasesQueuedAcquires() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 3)); using var lease = limiter.Acquire(1); var wait1 = limiter.WaitAsync(1); var wait2 = limiter.WaitAsync(1); var wait3 = limiter.WaitAsync(1); Assert.False(wait1.IsCompleted); Assert.False(wait2.IsCompleted); Assert.False(wait3.IsCompleted); await limiter.DisposeAsync(); var failedLease = await wait1; Assert.False(failedLease.IsAcquired); failedLease = await wait2; Assert.False(failedLease.IsAcquired); failedLease = await wait3; Assert.False(failedLease.IsAcquired); lease.Dispose(); // Throws after disposal Assert.Throws <ObjectDisposedException>(() => limiter.Acquire(1)); await Assert.ThrowsAsync <ObjectDisposedException>(() => limiter.WaitAsync(1).AsTask()); }
public override void CanAcquireResource() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.NewestFirst, 1)); var lease = limiter.Acquire(); Assert.True(lease.IsAcquired); Assert.False(limiter.Acquire().IsAcquired); lease.Dispose(); Assert.True(limiter.Acquire().IsAcquired); }
public override void AcquireZero_WithoutAvailability() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.NewestFirst, 1)); using var lease = limiter.Acquire(1); Assert.True(lease.IsAcquired); var lease2 = limiter.Acquire(0); Assert.False(lease2.IsAcquired); lease2.Dispose(); }
public override async Task CanFillQueueWithNewestFirstAfterCancelingQueuedRequestWithAnotherQueuedRequest() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(2, QueueProcessingOrder.NewestFirst, 2)); var lease = limiter.Acquire(2); Assert.True(lease.IsAcquired); var cts = new CancellationTokenSource(); var wait = limiter.WaitAsync(1, cts.Token); // Add another item to queue, will be completed as failed later when we queue another item var wait2 = limiter.WaitAsync(1); Assert.False(wait.IsCompleted); cts.Cancel(); var ex = await Assert.ThrowsAsync <TaskCanceledException>(() => wait.AsTask()); Assert.Equal(cts.Token, ex.CancellationToken); var wait3 = limiter.WaitAsync(2); Assert.False(wait3.IsCompleted); // will be kicked by wait3 because we're using NewestFirst var lease2 = await wait2; Assert.False(lease2.IsAcquired); lease.Dispose(); lease = await wait3; Assert.True(lease.IsAcquired); }
public override void MetadataNamesContainsAllMetadata() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); using var lease = limiter.Acquire(1); Assert.Collection(lease.MetadataNames, metadataName => Assert.Equal(metadataName, MetadataName.ReasonPhrase.Name)); }
public override async Task DropsMultipleOldestWhenQueuingMoreThanLimit_NewestFirst() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(2, QueueProcessingOrder.NewestFirst, 2)); var lease = limiter.Acquire(2); Assert.True(lease.IsAcquired); var wait = limiter.WaitAsync(1); Assert.False(wait.IsCompleted); var wait2 = limiter.WaitAsync(1); Assert.False(wait2.IsCompleted); var wait3 = limiter.WaitAsync(2); var lease1 = await wait; var lease2 = await wait2; Assert.False(lease1.IsAcquired); Assert.False(lease2.IsAcquired); Assert.False(wait3.IsCompleted); lease.Dispose(); lease = await wait3; Assert.True(lease.IsAcquired); }
public override void ThrowsWhenAcquiringMoreThanLimit() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.NewestFirst, 1)); var ex = Assert.Throws <ArgumentOutOfRangeException>(() => limiter.Acquire(2)); Assert.Equal("permitCount", ex.ParamName); }
public override void NullIdleDurationWhenActive() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); using var lease = limiter.Acquire(1); Assert.Null(limiter.IdleDuration); }
public override async Task LargeAcquiresAndQueuesDoNotIntegerOverflow() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(int.MaxValue, QueueProcessingOrder.NewestFirst, int.MaxValue)); var lease = limiter.Acquire(int.MaxValue); Assert.True(lease.IsAcquired); // Fill queue var wait = limiter.WaitAsync(3); Assert.False(wait.IsCompleted); var wait2 = limiter.WaitAsync(int.MaxValue); Assert.False(wait2.IsCompleted); var lease1 = await wait; Assert.False(lease1.IsAcquired); lease.Dispose(); var lease2 = await wait2; Assert.True(lease2.IsAcquired); }
public override void NoMetadataOnAcquiredLease() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); using var lease = limiter.Acquire(1); Assert.False(lease.TryGetMetadata(MetadataName.ReasonPhrase.Name, out _)); }
public override void IdleDurationUpdatesWhenChangingFromActive() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); var lease = limiter.Acquire(1); lease.Dispose(); Assert.NotNull(limiter.IdleDuration); }
public override async Task FailsWhenQueuingMoreThanLimit_OldestFirst() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); using var lease = limiter.Acquire(1); var wait = limiter.WaitAsync(1); var failedLease = await limiter.WaitAsync(1); Assert.False(failedLease.IsAcquired); }
public async Task ReasonMetadataOnFailedWaitAsync() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(2, QueueProcessingOrder.OldestFirst, 1)); using var lease = limiter.Acquire(2); var failedLease = await limiter.WaitAsync(2); Assert.False(failedLease.IsAcquired); Assert.True(failedLease.TryGetMetadata(MetadataName.ReasonPhrase.Name, out var metadata)); Assert.Equal("Queue limit reached", metadata); Assert.True(failedLease.TryGetMetadata(MetadataName.ReasonPhrase, out var typedMetadata)); Assert.Equal("Queue limit reached", typedMetadata); Assert.Collection(failedLease.MetadataNames, item => item.Equals(MetadataName.ReasonPhrase.Name)); }
public override async Task CanCancelWaitAsyncBeforeQueuing() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); var lease = limiter.Acquire(1); Assert.True(lease.IsAcquired); var cts = new CancellationTokenSource(); cts.Cancel(); await Assert.ThrowsAsync <OperationCanceledException>(() => limiter.WaitAsync(1, cts.Token).DefaultTimeout()); lease.Dispose(); Assert.Equal(1, limiter.GetAvailablePermits()); }
public override async Task CanDisposeAfterCancelingQueuedRequest() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); var lease = limiter.Acquire(1); Assert.True(lease.IsAcquired); var cts = new CancellationTokenSource(); var wait = limiter.WaitAsync(1, cts.Token); cts.Cancel(); var ex = await Assert.ThrowsAsync <TaskCanceledException>(() => wait.AsTask()); Assert.Equal(cts.Token, ex.CancellationToken); // Make sure dispose doesn't have any side-effects when dealing with a canceled queued item limiter.Dispose(); }
public override async Task CanCancelWaitAsyncAfterQueuing() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); var lease = limiter.Acquire(1); Assert.True(lease.IsAcquired); var cts = new CancellationTokenSource(); var wait = limiter.WaitAsync(1, cts.Token); cts.Cancel(); var ex = await Assert.ThrowsAsync <TaskCanceledException>(() => wait.AsTask()); Assert.Equal(cts.Token, ex.CancellationToken); lease.Dispose(); Assert.Equal(1, limiter.GetAvailablePermits()); }
public override async Task DropsRequestedLeaseIfPermitCountGreaterThanQueueLimitAndNoAvailability_NewestFirst() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(2, QueueProcessingOrder.NewestFirst, 1)); var lease = limiter.Acquire(2); Assert.True(lease.IsAcquired); // Fill queue var wait = limiter.WaitAsync(1); Assert.False(wait.IsCompleted); var lease1 = await limiter.WaitAsync(2); Assert.False(lease1.IsAcquired); lease.Dispose(); var lease2 = await wait; Assert.True(lease2.IsAcquired); }
public override async Task QueueAvailableAfterQueueLimitHitAndResources_BecomeAvailable() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); var lease = limiter.Acquire(1); var wait = limiter.WaitAsync(1); var failedLease = await limiter.WaitAsync(1); Assert.False(failedLease.IsAcquired); lease.Dispose(); lease = await wait; Assert.True(lease.IsAcquired); wait = limiter.WaitAsync(1); Assert.False(wait.IsCompleted); lease.Dispose(); lease = await wait; Assert.True(lease.IsAcquired); }
public override async Task CannotAcquireResourcesWithAcquireWithQueuedItemsIfOldestFirst() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(2, QueueProcessingOrder.OldestFirst, 3)); using var lease = await limiter.WaitAsync(1); Assert.True(lease.IsAcquired); var wait1 = limiter.WaitAsync(2); Assert.False(wait1.IsCompleted); var lease2 = limiter.Acquire(1); Assert.False(lease2.IsAcquired); lease.Dispose(); var lease1 = await wait1; Assert.True(lease1.IsAcquired); }
public override async Task CancelUpdatesQueueLimit() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.OldestFirst, 1)); var lease = limiter.Acquire(1); Assert.True(lease.IsAcquired); var cts = new CancellationTokenSource(); var wait = limiter.WaitAsync(1, cts.Token); cts.Cancel(); var ex = await Assert.ThrowsAsync <TaskCanceledException>(() => wait.AsTask()); Assert.Equal(cts.Token, ex.CancellationToken); wait = limiter.WaitAsync(1); Assert.False(wait.IsCompleted); lease.Dispose(); lease = await wait; Assert.True(lease.IsAcquired); }
public override void ThrowsWhenAcquiringLessThanZero() { var limiter = new ConcurrencyLimiter(new ConcurrencyLimiterOptions(1, QueueProcessingOrder.NewestFirst, 1)); Assert.Throws <ArgumentOutOfRangeException>(() => limiter.Acquire(-1)); }