Consumer driven contract testing with Pact (at the European Testing Conference 2020)
Consumer driven contract testing with Pact (at the European Testing Conference 2020)
Did you ever struggle consuming an API that kept on changing? Did you provide an API that you were unsure how people will use it? In such a scenario, an iterative and cooperative way of working that focuses on consumer driven contract testing can reduce your pain. In other words, an experience with “Consumer collaboration over contract negotiation”. This talk aims to practically illustrate consumer driven testing using Pact. We will cover when this technique is appropriate and how to organise, define and evolve APIs while keeping in mind. The session will involve a mixture of presentation and live coding to illustrate on how this works in practice. https://europeantestingconference.eu/2020/topics/#matteo-pierro Talk with https://twitter.com/matteo_pierro
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Consumer driven contract testing with Pact (at the European Testing Conference 2020)
- 1. CONSUMER DRIVEN CONTRACT TESTING WITH PACT The evolution of your APIs supporting with tests @nelisboucke @matteo_pierro
- 2. Overview ● Why? ● What is Contract Testing? ● Code example with Pact ● Challenges
- 3. Overview ● Why? ● What is Contract Testing? ● Code example with Pact ● Challenges
- 4. A STORY…
- 5. A STORY…
- 6. NOT COVERED BY TESTS? Trustworthy Cheap TargetedReliable
- 7. Integration tests Use running system Use mocks Reliability - + Speed - + Targeted - + Environment setup - not needed Test data - + Easy to automate - + Trustworthy + -
- 8. IF ONLY WE COULD VERIFY THE MOBILE TEAM'S MOCKS ……..
- 9. Overview ● Why? ● What is Contract Testing? ● Code example with Pact ● Challenges
- 10. Contract Testing flow →
- 12. Overview ● Why? ● What is Contract Testing? ● Code example with Pact ● Challenges
- 13. E-commerce →
- 15. Code Example →
- 16. Overview ● Why? ● What is Contract Testing? ● Code example with Pact ● Challenges
- 17. Challenge: collaboration? PACT does not solve your collaboration problems ● Provider must verify consumers’ expectations ● Consumer must check expectations with the provider
- 18. Challenge: Rework? PACT replaces your previous mocks ● Rework / Extend consumer tests to for this
- 19. Challenge: When Applicability? ● You want to integrate fast ○ Evolving application ○ Fast feedback ○ Reduce integration risk ● Limited and known consumers ○ Typical settings ■ Single organisation, multiple teams ■ Frontend backend ■ Microservices