At a talk I gave last week, someone asked a question which I didn’t feel confident to answer: “How would you handle a situation where the consumer, C, called service P1 and then passed the results onto service P2? C only cares about the result of the call to P2.” I can see how to contract test P1, but I’m not sure how to contract test the transitive nature of the relationship. I’d appreciate any perspective you might have.

You’d typically do this with two interactions: C -> P1 C -> P2 You would make sure the expectations you’re setting up for P1 and P2 match