public async Task IfEnricherException_ErrorsAreCaptured()
{
// Arrange:
var enricher1 = new MessageEnricherOne
{
ExpectedException = new InvalidOperationException("ENRICHER_MESSAGE_1")
};
var enricher2 = new MessageEnricherOne
{
ExpectedException = new InvalidOperationException("ENRICHER_MESSAGE_2")
};
var publisher = new MessagePublisherOne();
var dispatcher = SetupDispatcher(config =>
{
config.AddEnricher <MessageEnricherOne>();
config.AddEnricher <MessageEnricherTwo>();
config.AddPublisher <MessagePublisherOne>();
},
new[] { enricher1, enricher2 },
new[] { publisher });
var command = new TestCommand();
try
{
// Act:
await dispatcher.SendAsync(command);
}
catch (PublisherException ex)
{
// Assert:
// ...The publisher exception has a list of exceptions for each failed enricher.
Assert.NotNull(ex.ExceptionDetails);
Assert.Equal(2, ex.ExceptionDetails.Count());
Assert.True(ex.ExceptionDetails.All(dEx => dEx.GetType() == typeof(EnricherException)));
// ... Each enricher exception will have an inner-exception referencing the actual
// ... exception thrown by the enricher:
Assert.True(ex.ExceptionDetails.All(dEx => dEx.InnerException.GetType() == typeof(InvalidOperationException)));
var messages = ex.ExceptionDetails.Select(dEx => dEx.InnerException.Message).ToArray();
Assert.Contains("ENRICHER_MESSAGE_1", messages);
Assert.Contains("ENRICHER_MESSAGE_2", messages);
// ... If an enricher fails, message publishers are not called.
Assert.DoesNotContain(command.CallSequence, cs => cs == typeof(MessagePublisher));
}
}
public async Task AllMessageEnrichersInvoked_BeforeProviders()
{
// Arrange
var enricher = new MessageEnricherOne();
var publisher = new MessagePublisherOne();
var dispatcher = SetupDispatcher(config =>
{
config.AddEnricher <MessageEnricherOne>();
config.AddPublisher <MessagePublisherOne>();
},
new[] { enricher },
new[] { publisher });
// Act
var command = new TestCommand();
await dispatcher.SendAsync(command);
// Assert
Assert.Equal(2, command.CallSequence.Count);
Assert.Equal(typeof(MessageEnricherOne), command.CallSequence.ElementAt(0));
Assert.Equal(typeof(MessagePublisherOne), command.CallSequence.ElementAt(1));
}
