public void ProcessMessage_WhenProcessorExists_ShouldRaiseProcessorNotFoundException()
{
// Arrange
var username = "******";
Message message = new PublicMessageRequest("Hello");
var logger = Substitute.For <ILogger <MessageProcessorService> >();
var serviceProvider = Substitute.For <IServiceProvider>();
var mockProcessor = Substitute.For <IMessageProcessor <PublicMessageRequest> >();
serviceProvider.GetService(Arg.Any <Type>()).Returns(null);
MessageProcessorService messageProcessorService = new MessageProcessorService(logger, serviceProvider);
// Act / Assert
Assert.Throws <ProcessorNotFoundException>(() => messageProcessorService.ProcessMessage(username, message));
}
public void ProcessMessage_WhenProcessorExists_ShouldProcessMessage()
{
// Arrange
var username = "******";
Message message = new PublicMessageRequest("Hello");
var logger = Substitute.For <ILogger <MessageProcessorService> >();
var serviceProvider = Substitute.For <IServiceProvider>();
var mockProcessor = Substitute.For <IMessageProcessor <PublicMessageRequest> >();
serviceProvider.GetService(Arg.Is(typeof(IMessageProcessor <PublicMessageRequest>))).Returns(mockProcessor);
MessageProcessorService messageProcessorService = new MessageProcessorService(logger, serviceProvider);
// Act
messageProcessorService.ProcessMessage(username, message);
// Assert
mockProcessor.Received(1).HandleMessage(username, message);
}