public void Poll_client_retries_if_sqs_client_throws_on_receive()
{
// Arrange
var mockSqsClient = new Mock<IAwsSqsClient>();
var pollster = new SqsPollClient(mockSqsClient.Object, TaskTimerFactory.Current);
var call = 0;
var threw = false;
mockSqsClient.Setup(x => x.Receive("test", AwsSqsDefaults.MAX_MESSAGES, AwsSqsDefaults.DEFAULT_VISIBILITY, It.IsAny<Result<IEnumerable<AwsSqsMessage>>>()))
.Returns((string queue, int maxMessages, TimeSpan visiblityTimeout, Result<IEnumerable<AwsSqsMessage>> result) => {
if(call == 0) {
result.Throw(new Exception());
threw = true;
} else {
result.Return(new AwsSqsMessage[0]);
}
call++;
return result;
});
// Act
var messages = 0;
pollster.Listen("test", 100.Milliseconds(), m => messages++);
// Assert
Assert.IsTrue(Wait.For(() => call > 1, 10.Seconds()), "never got past the first receive call");
Assert.IsTrue(threw, "exception was never thrown in receive call");
Assert.AreEqual(0, messages, "somehow received messages");
pollster.Dispose();
}
public void Poll_client_pulls_from_sqs_and_calls_callback()
{
var mockSqsClient = new MockSqsClient();
mockSqsClient.FillQueue(15);
var pollster = new SqsPollClient(mockSqsClient, TaskTimerFactory.Current);
Assert.AreEqual(15, mockSqsClient.Queued.Count, "queue was accessed prematurely");
var posted = new List<AwsSqsMessage>();
pollster.Listen("foo", 300.Seconds(), posted.Add);
Assert.IsTrue(Wait.For(() => mockSqsClient.Queued.Count == 0, 10.Seconds()), "queue did not get depleted in time");
Assert.IsTrue(
Wait.For(() => mockSqsClient.ReceiveCalled == 3, 5.Seconds()),
string.Format("receive called the wrong number of times: {0} != {1}", 3, mockSqsClient.ReceiveCalled)
);
Assert.AreEqual(15, mockSqsClient.Delivered.Count, "delivered has the wrong number of messages");
Assert.AreEqual(
mockSqsClient.Delivered.Select(x => x.MessageId).ToArray(),
mockSqsClient.Deleted.Select(x => x.MessageId).ToArray(),
"delivered and deleted don't match"
);
Assert.AreEqual(
mockSqsClient.Delivered.Select(x => x.MessageId).ToArray(),
posted.Select(x => x.MessageId).ToArray(),
"delivered and posted don't match"
);
}