public void TestThrowsIfContainerDoesNotExist()
{
using var provider = new TestingAzureBlobLeaseDistributedLockProvider();
provider.Strategy.ContainerName = "does-not-exist";
var @lock = provider.CreateLock(nameof(TestThrowsIfContainerDoesNotExist));
Assert.Throws <RequestFailedException>(() => @lock.TryAcquire()?.Dispose())
.ErrorCode.ShouldEqual("ContainerNotFound");
}
public async Task TestSuccessfulRenewal()
{
using var provider = new TestingAzureBlobLeaseDistributedLockProvider();
provider.Strategy.Options = o => o.RenewalCadence(TimeSpan.FromSeconds(.05));
var @lock = provider.CreateLock(nameof(TestSuccessfulRenewal));
using var handle = @lock.Acquire();
await Task.Delay(TimeSpan.FromSeconds(.2)); // long enough for renewal to run
Assert.DoesNotThrow(handle.Dispose); // observes the result of the renewal task
}
public void TestExitsDespiteLongSleepTime()
{
using var provider = new TestingAzureBlobLeaseDistributedLockProvider();
provider.Strategy.Options = o => o.BusyWaitSleepTime(TimeSpan.FromSeconds(30), TimeSpan.FromMinutes(1));
var @lock = provider.CreateLock(nameof(TestExitsDespiteLongSleepTime));
using var handle1 = @lock.Acquire();
var handle2Task = @lock.TryAcquireAsync(TimeSpan.FromSeconds(2)).AsTask();
Assert.IsFalse(handle2Task.Wait(TimeSpan.FromSeconds(.05)));
handle1.Dispose();
Assert.IsTrue(handle2Task.Wait(TimeSpan.FromSeconds(5)));
}
[NonParallelizable, Retry(tryCount: 3)] // timing-sensitive
public void TestTriggersHandleLostIfLeaseExpiresNaturally()
{
using var provider = new TestingAzureBlobLeaseDistributedLockProvider();
provider.Strategy.Options = o => o.RenewalCadence(Timeout.InfiniteTimeSpan).Duration(TimeSpan.FromSeconds(15));
var @lock = provider.CreateLock(nameof(TestTriggersHandleLostIfLeaseExpiresNaturally));
using var handle = @lock.Acquire();
using var @event = new ManualResetEventSlim(initialState: false);
using var registration = handle.HandleLostToken.Register(@event.Set);
using var faultingRegistration = handle.HandleLostToken.Register(() => throw new TimeZoneNotFoundException());
Assert.IsTrue(@event.Wait(TimeSpan.FromSeconds(15.1)));
Assert.Throws <RequestFailedException>(handle.Dispose)
.ErrorCode.ShouldEqual("LeaseLost");
}
public void TestCanAcquireIfContainerLeased()
{
using var provider = new TestingAzureBlobLeaseDistributedLockProvider();
provider.Strategy.ContainerName = "leased-container" + TargetFramework.Current.Replace('.', '-');
var containerClient = new BlobContainerClient(AzureCredentials.ConnectionString, provider.Strategy.ContainerName);
var containerLeaseClient = new BlobLeaseClient(containerClient);
try
{
containerClient.CreateIfNotExists();
containerLeaseClient.Acquire(TimeSpan.FromSeconds(60));
var @lock = provider.CreateLock(nameof(TestCanAcquireIfContainerLeased));
using var handle = @lock.TryAcquire();
Assert.IsNotNull(handle);
}
finally
{
try { containerLeaseClient.Release(); }
finally { containerClient.DeleteIfExists(); }
}
}