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Karate Consumer Driven Contracts Demo

References

This is a simplified version of the example in the Karate test-doubles documentation - with JMS / queues removed and simplified to be a stand-alone maven project.

Also see The World’s Smallest Microservice.

Instructions

  • clone the project
  • mvn clean test

Main Artifacts

| File | Description | Comment | | —- | ———– | ——- | | PaymentService.java | Producer | A very simple Spring Boot app / REST service | | payment-contract.feature | Contract + Functional Test | Karate API test | | PaymentContractTest.java | Producer Integration Test | JUnit runner for the above | | payment-mock.feature | Mock / Stub | Karate mock that perfectly simulates the Producer ! | | PaymentContractAgainstMockTest.java | Verify that the Mock is as per Contract | JUnit runner that points payment-contract.feature –> payment-mock.feature | | Consumer.java | Consumer | A simple Java app that calls the Producer to do some work | | ConsumerIntegrationTest.java | Consumer Integration Test | A JUnit full integration test, using the real Consumer and Producer | | ConsumerIntegrationAgainstMockTest.java | Consumer Integration Test but using the Mock | Like the above but using the mock Producer |