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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

You can click on the links to view the source-code.

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