public void MessageWithValidFormatShouldInvokeMessageHandler()
{
// arrange
var messageId = 123;
var parsedMessage = new Message(messageId, "message");
_messageParser.Setup(_ => _.TryParse(It.IsAny <string>(), out parsedMessage))
.Returns(true); // simulation of message in valid format
_messageHandler.Setup(_ => _.OnExpectedMessage(It.IsAny <string>(), It.IsAny <Message>()));
var subscriber = new ReliableSubscriberTraceable(_redis.GetConnection(), _messageParser.Object, null);
var publisher = _redis.GetConnection().GetSubscriber(); // standard, not-reliable publisher
// act
subscriber.Subscribe("testChannel", _messageHandler.Object);
publisher.Publish("testChannel", $"{messageId}:message"); // simulation of sending messageId of type long
Thread.Sleep(50);
// assert
Assert.Null(subscriber.LastException);
Assert.Equal(0, subscriber.ExceptionsCount);
_messageParser.Verify(_ => _.TryParse($"{messageId}:message", out parsedMessage), Times.Once);
_messageHandler.Verify(_ => _.OnExpectedMessage("testChannel", new Message(messageId, "message")), Times.Once);
}
public void ReceivingMessageInInvalidFormatShouldNotInvokeMessageHandler()
{
// arrange
var log = new Mock <ILoggerFactory>(MockBehavior.Strict);
log.Setup(_ => _.CreateLogger(It.IsAny <string>()).Log(
It.IsAny <LogLevel>(),
It.IsAny <EventId>(),
It.IsAny <object>(),
It.IsAny <Exception>(),
It.IsAny <Func <object, Exception, string> >()));
Message parsedMessage;
_messageParser.Setup(_ => _.TryParse(It.IsAny <string>(), out parsedMessage))
.Returns(false); // simulation of message in invalid format
var subscriber = new ReliableSubscriberTraceable(_redis.GetConnection(), _messageParser.Object, log.Object);
var publisher = _redis.GetConnection().GetSubscriber(); // standard, not-reliable publisher
// act
subscriber.Subscribe("testChannel", _messageHandler.Object);
publisher.Publish("testChannel", "message");
Thread.Sleep(50);
// assert
Assert.Null(subscriber.LastException);
Assert.Equal(0, subscriber.ExceptionsCount);
_messageParser.Verify(_ => _.TryParse("message", out parsedMessage), Times.Once);
log.Verify(_ => _.CreateLogger(It.IsAny <string>()).Log(
LogLevel.Warning,
It.IsAny <EventId>(),
It.IsAny <object>(),
null,
It.IsAny <Func <object, Exception, string> >()), Times.Once);
}
