public void If_Empty_Byte_Array_Is_Received_Then_A_Null_Reference_Exception_Should_Be_Thrown()
{
//Arrange
var mockBytes = new byte[] { };
var listener = new ServiceBusListener(_mockSerialiser.Object, _mockHandlerResolver.Object,
_mockHandlerInvoker.Object);
//Act
async Task Delegate()
{
await listener.ReceiveMessage(mockBytes, CancellationToken.None);
}
//Assert
Assert.That(Delegate, Throws.TypeOf <NullReferenceException>());
}
public async Task When_Message_Is_Received_The_Correct_Handler_Is_Invoked()
{
//Arrange
var mockBytes = new byte[] { 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33 };
var mockMessage = new TestMessage(Guid.Empty, Guid.Empty);
var mockHandler = new TestMessageHandler(_mockEventLogger.Object);
_mockSerialiser.
Setup(x => x.Deserialise(It.IsAny <MemoryStream>())).
Returns(Task.FromResult((object)mockMessage));
_mockHandlerResolver.
Setup(x => x.ResolveAllHandlersFor(typeof(TestMessage))).
Returns(new[] { mockHandler });
var listener = new ServiceBusListener(_mockSerialiser.Object, _mockHandlerResolver.Object,
_mockHandlerInvoker.Object);
//Act
await listener.ReceiveMessage(mockBytes, CancellationToken.None);
//Assert
_mockHandlerInvoker.Verify(x => x.InvokeHandlers(new [] { mockHandler }, mockMessage, CancellationToken.None), Times.Once);
}
public async Task If_Deserialiser_Fails_Then_The_Exception_Will_Bubble_Up_Throw_The_Receive_Message()
{
//Arrange
const string errorMessage = "Hello From The Test World";
var mockBytes = new byte[] { 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33 };
_mockSerialiser.
Setup(x => x.Deserialise(It.IsAny <MemoryStream>())).
Throws(new Exception(errorMessage));
var listener = new ServiceBusListener(_mockSerialiser.Object, _mockHandlerResolver.Object,
_mockHandlerInvoker.Object);
try
{
//Act
await listener.ReceiveMessage(mockBytes, CancellationToken.None);
}
catch (Exception e)
{
//Assert
Assert.That(e.Message, Is.EqualTo(errorMessage));
}
}
