Consumer Driven Contract Testing

What the Consumer Driven Contract Testing is, when it's needed and how it can be implemented

Transcript

1. Consumer driven contract testing Daria Golub, Software developer @nano_repka dgolub
2. Story
3. Question
4. Unit tests. Mocking dependencies Consumer Mock provider request response Provider Mock consumer request response
5. Integration tests. E2E tests HELL YEAH
6. How to test? Unit Contract Integration E2E
7. Consumer driven contract tests. How it works? © https://reflectoring.io/7-reasons-for-consumer-driven-contracts/
8. Consumer driven contract tests. Advatages? - Better level of isolation - Faster time to response - Stability
9. Pact framework
10. PACT demo 1. Consumer and provider communicating by GET request Add test with mocked dependency to consumer and break the provider 2. Apply PACT for consumer testing 3. Apply PACT for provider testing 4. Introduce PACT broker
11. Step 1. Consumer and provider. Add mocking test GET /flights?flightDate=... { airline: "KLM", price: 49.95, .... }
12. Step 2. Testing on consumer side GET /flights?flightDate=... { airline: "KLM", price: 49.95, .... }
13. Step 2. Testing on consumer side Provider settings Expectations Test actions Assertions
14. Step 2. Pact file Request spec Response spec Preconditions
15. Step 3. Testing on provider side GET /flights?flightDate=... { airline: "KLM", price: 49.95, .... }
16. Step 4. Pact broker
17. CI
18. What did we get Consumer Provider Pact broker Test Test
19. Conclusion Fast Cheap Reliable BUT
20. Talk talk talk
21. Thank you! What questions do you have? @nano_repka dgolub