public static void Subscribe_ThrowsArgumentNullException_ForNullSubscriber()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
// Act a Assert
Assert.Throws <ArgumentNullException>(() => coordinator.Subscribe((Action <object>)null));
}
public static void Publish_AcceptsMessageWithoutMatchingSubscribers()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
// Act & Assert
////Assert.DoesNotThrow(() => coordinator.Publish("message"));
coordinator.Publish("message");
Assert.True(true);
}
public static void Subscribe_ThrowsInvalidOperationException_WhenCalledAfterClose()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
coordinator.Close();
// Act & Assert
Assert.Throws <InvalidOperationException>(() => coordinator.Subscribe <string>(_ => { }));
}
public static void Publish_ThrowsInvalidOperationException_WhenCalledAfterClose()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
coordinator.Close();
// Act & Assert
Assert.Throws <InvalidOperationException>(() => coordinator.Publish("message"));
}
public static void Close_MayBeCalledMultipleTimes()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
coordinator.Close();
// Act & Assert
////Assert.DoesNotThrow(() => coordinator.Close());
coordinator.Close();
Assert.True(true);
}
public static void Publish_DoesNotPushMessageToSubscribersOfInheritedTypes()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
coordinator.Subscribe <MyInheritedMessage>(
_ => Assert.False(true, "Callback should never have been called."));
// Act
coordinator.Publish(new MyMessage());
// Assert
}
public static void Publish_AcceptsNullMessage()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
string receivedMessage = "whatever";
coordinator.Subscribe <string>(_ => receivedMessage = _);
// Act
coordinator.Publish((string)null);
// Assert
Assert.Null(receivedMessage);
}
public static void PushesPreviouslyPublishedMessages_WhenNestedInSubscriber()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
var received = false;
coordinator.Publish("message");
// Act
coordinator.Subscribe <int>(_ => { received = _ == 123; });
coordinator.Subscribe <string>(_ => coordinator.Publish(123));
// Assert
Assert.True(received);
}
public static void Publish_PushesMessageToSubscribersOfBaseType()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
MyMessage receivedMessage = null;
coordinator.Subscribe <MyMessage>(_ => receivedMessage = _);
// Act
var publishedMessage = new MyInheritedMessage();
coordinator.Publish(publishedMessage);
// Assert
Assert.Equal(publishedMessage, receivedMessage);
}
public static void Publish_PushesMessageToSubscribers()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
string receivedMessage = null;
coordinator.Subscribe <string>(_ => receivedMessage = _);
// Act
var publishedMessage = "hello";
coordinator.Publish(publishedMessage);
// Assert
Assert.Equal(publishedMessage, receivedMessage);
}
public static void Subscribe_PushesPreviouslyPublishedMessagesToNewSubscribers()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
var publishedMessage = "hello";
coordinator.Publish(publishedMessage);
// Act
string receivedMessage = null;
coordinator.Subscribe <string>(_ => receivedMessage = _);
// Assert
Assert.Equal(publishedMessage, receivedMessage);
}
public static void Publish_PushesToSubscribersInOrderOfSubscription()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
var subscriberCount = 20;
var firedSubscribers = new List <int>();
for (var i = 0; i < subscriberCount; i++)
{
var subscriberIndex = i;
coordinator.Subscribe <string>(_ => firedSubscribers.Add(subscriberIndex));
}
// Act
coordinator.Publish("message");
// Assert
Assert.Equal(Enumerable.Range(0, subscriberCount).ToArray(), firedSubscribers);
}
public static void Subscribe_PushesPreviouslyPublishedMessagesToNewSubscribersInOrderOfPublication()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
var messageCount = 20;
var publishedMessages = Enumerable.Range(0, messageCount).ToList();
foreach (var message in publishedMessages)
{
coordinator.Publish(message);
}
// Act
var receivedMessages = new List <int>();
coordinator.Subscribe <int>(_ => receivedMessages.Add(_));
// Assert
Assert.Equal(publishedMessages, receivedMessages);
}
public static void Publish_StopsPushingMessageAfterFirstFailingSubscriber()
{
// Arrange
var coordinator = new AspNetMessageCoordinator();
coordinator.Subscribe <string>(
_ => { throw new ApplicationException("Test exception"); });
coordinator.Subscribe <string>(
_ => Assert.False(true, "This subscriber should not have been called."));
// Act
try
{
coordinator.Publish("message");
}
catch (ApplicationException)
{
}
// Assert
}
