SOA Working Group Meeting #4

Transcript

1. SOA Working Group Meeting #4 2015-09-30
2. SOA Working Group Meeting #4 - Sponsors
3. SOA Working Group Meeting #3 - Agenda Darby Frey (Belly) - Testing with Microservices Nathan Keyes (Avant) - Philotic Anthony Broad-Crawford (Fooda) - Rust(y) SOA
4. Testing with Microservices
5. Kinds of Tests
6. Kinds of Tests End to End
7. Unit Tests
8. Unit Tests • Fast Feedback • Isolated • Good for Refactoring • Technology Facing • Provide little confidence around the system as a whole
9. Service Tests
10. Service Tests • Fast Feedback • Some Exposure to Dependencies • Stub Downstream Services • Stubs are hard to maintain (VCR, Mountebank, etc.) • Primarily Technology Facing • Easy to get out of sync with downstream changes • Provide slightly more confidence around the system as a whole
11. End to End Tests
12. End to End Tests • Provide high confidence around the system as a whole • Business Facing • Hard to setup and maintain • Slow Feedback • Can be Brittle • Who is responsible in the event of a failure? • Core Journeys • Jointly Owned
13. Consumer Driven Tests
16. Example • https://github.com/realestate-com-au/pact/tree/master/example
17. Example - Consumer Zoo App ...setup... animal_service.given("there is an alligator named Mary"). upon_receiving("a request for an alligator").with( method: :get, path: '/alligators/Mary', headers: {'Accept' => 'application/json'} ). will_respond_with( status: 200, headers: {'Content-Type' => 'application/json;charset=utf-8'}, body: {name: 'Mary'} )
18. Example - Pact File { "provider": { "name": "Animal Service" }, "consumer": { "name": "Zoo App" }, "interactions": [ … ] "metadata": { "pactSpecificationVersion": "1.0.0" } }
19. Example - Pact File (interaction) { "description": "a request for an alligator", "provider_state": "there is an alligator named Mary", "request": { "method": "get", "path": "/alligators/Mary", "headers": { "Accept": "application/json" } }, "response": { "status": 200, "headers": { "Content-Type": "application/json;charset=utf-8" }, "body": { "name": "Mary" } } },
20. Example - Provider Animal Service ...setup... honours_pact_with "Zoo App" do pact_uri '../zoo-app/spec/pacts/zoo_app-animal_service.json' end
24. Consumer Driven Tests • https://github.com/realestate-com-au/pact • https://github.com/bethesque/pact_broker • http://www.infoq.com/presentations/pact • Faster Feedback (than End to End Tests) • Higher Confidence (than Unit Tests) • Easier to Maintain (than Service Tests) • Setup is Time Consuming • Pact Broker is an External Dependency
25. No Silver Bullet • Canary Releases, Smoke Tests, Semantic Monitoring • Time to Repair vs. Time Between Failures • Optimize for Fast Feedback
26. Other approaches?