public async Task LockAsync_WithContention_AcquisitionTimeoutExpires_Throws()
{
CancellationToken cancellationToken = new CancellationToken();
_mockStorageBlob.Setup(p => p.UploadTextAsync(string.Empty, null, It.Is <AccessCondition>(q => q.IfNoneMatchETag == "*"), null, null, cancellationToken)).Returns(Task.FromResult(true));
int count = 0;
_mockStorageBlob.Setup(p => p.AcquireLeaseAsync(_singletonConfig.LockPeriod, null, cancellationToken))
.Callback <TimeSpan?, string, CancellationToken>((mockPeriod, mockLeaseId, mockCancellationToken) =>
{
++count;
}).Returns(() =>
{
return(Task.FromResult <string>(null));
});
SingletonAttribute attribute = new SingletonAttribute();
TimeoutException exception = await Assert.ThrowsAsync <TimeoutException>(async() => await _singletonManager.LockAsync(TestLockId, TestInstanceId, attribute, cancellationToken));
int expectedRetryCount = (int)(_singletonConfig.LockAcquisitionTimeout.TotalMilliseconds / _singletonConfig.LockAcquisitionPollingInterval.TotalMilliseconds);
Assert.Equal(expectedRetryCount, count - 1);
Assert.Equal("Unable to acquire singleton lock blob lease for blob 'testid' (timeout of 0:00:00.2 exceeded).", exception.Message);
_mockStorageBlob.VerifyAll();
}