public void StartListeningShouldThrowExceptionWhenAlreadyListening()
{
// Arrange
Mock <TestBusContext> context = new Mock <TestBusContext>();
string[] topics = new string[0];
string queue = "queue.name";
var receiver = new TestMessageReceiver(context.Object, queue, topics);
receiver.StartReceivingMessages();
// Act
void Act() => receiver.StartReceivingMessages();
// Assert
var exception = Assert.ThrowsException <BusConfigurationException>(Act);
Assert.AreEqual("Receiver is already listening to events!", exception.Message);
}
public void PausePausesReceiver()
{
// Arrange
Mock <TestBusContext> context = new Mock <TestBusContext>(MockBehavior.Strict);
var receiver = new TestMessageReceiver(context.Object, "queue", new string[0]);
receiver.StartReceivingMessages();
// Act
receiver.Pause();
// Assert
Assert.IsTrue(receiver.IsPaused);
}
public void ResumeThrowsExceptionIfNotPaused()
{
// Arrange
Mock <TestBusContext> context = new Mock <TestBusContext>(MockBehavior.Strict);
var receiver = new TestMessageReceiver(context.Object, "queue", new string[0]);
receiver.StartReceivingMessages();
// Act
void Act() => receiver.Resume();
// Assert
BusConfigurationException exception = Assert.ThrowsException <BusConfigurationException>(Act);
Assert.AreEqual("Attempting to resume the TestMessageReceiver, but it was not paused.", exception.Message);
}
public void StartReceivingCreatesQueueWrapperInDictionary(string queue, string topics)
{
// Arrange
Mock <TestBusContext> context = new Mock <TestBusContext>(MockBehavior.Strict);
var dictionary = new Dictionary <TestBusKey, TestBusQueueWrapper <EventMessage> >();
context.SetupGet(e => e.DataQueues)
.Returns(dictionary);
string[] topicNames = topics.Split(',');
var receiver = new TestMessageReceiver(context.Object, queue, topicNames);
// Act
receiver.StartReceivingMessages();
// Assert
foreach (var topic in topicNames)
{
var key = new TestBusKey(queue, topic);
Assert.IsTrue(dictionary.ContainsKey(key));
}
}