I have a flow containing an http request to an external service. I want to add an MUnit test to make sure the logic functions when the external service is down and returns a 500. I mock the http request and return a 500, but the flow does not raise an exception since I am testing outside of APIKit.
Is there any way to force a mocked component to raise a specific exception?
You can mock a message processor and instruct it to throw an exception by using the throw-an message processor:
https://docs.mulesoft.com/munit/v/1.2.0/mock-message-processor#defining-mock-response-exceptions
It short it follows the same definition patter as the mock message processor:
<mock:config name="mock_config" doc:name="Mock configuration"/>
<mock:throw-an whenCalling="mule:set-payload" exception-ref="#[new java.lang.Exception()]">
</mock:throw-an>
(in this example only defining the message processor name but you can also use the attributes of the message processor).
HTH