public async Task ActiveSubscriptionTest(Guid streamGuid, string streamNamespace)
{
const int subscriptionCount = 10;
// get producer and consumer
IMultipleSubscriptionConsumerGrain consumer = MultipleSubscriptionConsumerGrainFactory.GetGrain(Guid.NewGuid());
// create expected subscriptions
IEnumerable <Task <StreamSubscriptionHandle <int> > > subscriptionTasks =
Enumerable.Range(0, subscriptionCount)
.Select(async i => await consumer.BecomeConsumer(streamGuid, streamNamespace, streamProviderName));
List <StreamSubscriptionHandle <int> > expectedSubscriptions = (await Task.WhenAll(subscriptionTasks)).ToList();
// query actuall subscriptions
IList <StreamSubscriptionHandle <int> > actualSubscriptions = await consumer.GetAllSubscriptions(streamGuid, streamNamespace, streamProviderName);
// validate
Assert.AreEqual(subscriptionCount, actualSubscriptions.Count, "Subscription Count");
Assert.AreEqual(subscriptionCount, expectedSubscriptions.Count, "Reported subscription Count");
foreach (StreamSubscriptionHandle <int> subscription in actualSubscriptions)
{
Assert.IsTrue(expectedSubscriptions.Contains(subscription), "Subscription Match");
}
// unsubscribe from one of the subscriptions
StreamSubscriptionHandle <int> firstHandle = expectedSubscriptions.First();
await consumer.StopConsuming(firstHandle);
expectedSubscriptions.Remove(firstHandle);
// query actuall subscriptions again
actualSubscriptions = await consumer.GetAllSubscriptions(streamGuid, streamNamespace, streamProviderName);
// validate
Assert.AreEqual(subscriptionCount - 1, actualSubscriptions.Count, "Subscription Count");
Assert.AreEqual(subscriptionCount - 1, expectedSubscriptions.Count, "Reported subscription Count");
foreach (StreamSubscriptionHandle <int> subscription in actualSubscriptions)
{
Assert.IsTrue(expectedSubscriptions.Contains(subscription), "Subscription Match");
}
// unsubscribe from the rest of the subscriptions
expectedSubscriptions.ForEach(async h => await consumer.StopConsuming(h));
// query actuall subscriptions again
actualSubscriptions = await consumer.GetAllSubscriptions(streamGuid, streamNamespace, streamProviderName);
// validate
Assert.AreEqual(0, actualSubscriptions.Count, "Subscription Count");
}
