TDD and Hexagonal Architecture in Microservices (Valentina (Cupać) Jemuović) скачать в хорошем качестве

TDD and Hexagonal Architecture in Microservices (Valentina (Cupać) Jemuović)

TDD and Hexagonal Architecture help us build high-quality software products and reduce long-term maintenance costs. With TDD, our tests act as executable specifications of behavior that drive the implementation. With Clean Architecture, we can model our application core in such a way that it is independent of infrastructural concerns. In this session we will review Hexagonal Architecture, aka Ports & Adapters, through a multi-module Java project. The Application Core module comprises the Use Cases & the Domain. This impacts testing - we write Unit Tests which target Driver Ports within the Core, and we use Fakes for Driven Ports. The Adapter modules implement infrastructural concerns. For each infrastructural concern, we have a fake implementation as well as one or more real implementations. We write Integration Tests targeting the adapters. In Integration Testing, where does Contract Testing fit in (more specifically, Consumer Driven Contract Testing)? When testing HTTP Driver Adapters (e.g. we wrote a microservice that exposes a REST API), then we can use contract testing to test our REST API contract, whilst mocking out the Application Core. When testing HTTP Driven Adapters (e.g. we are integrating with third-party systems or other microservices exposing a REST API), then we need to be able to mock HTTP requests and responses Note: Aside from synchronous HTTP-based communication, similar principles apply to asynchronous messaging communication. But how does TDD fit in with Contract Testing? On one hand, Contract Testing generally relies on inter-team communication, for example, microservice teams align regarding their contract, which is implemented by the consumer team and verified by the provider team. Often this process has longer communication cycles. On the other hand, TDD is an iterative and incremental approach to development, with very short feedback cycles. How do we use both TDD & Contract Testing? We’ll explore communication and incrementalism during this session. ABOUT VALENTINA Valentina (Cupać) Jemuović is the Technical Coach & Founder at Optivem. She works with Engineering Leaders to improve quality by coaching development teams in TDD, Clean Code & Clean Architecture. She helps teams strive toward Zero Defect Software and accelerate delivery to release reliable software faster. She works with clients across Europe and North America, with a special focus on Industrial Automation, Finance and Logistics. Previously, Valentina had extensive hands-on experience in software development - as a Senior Software Developer, Tech Lead, Software Architect, and Solutions Architect. She has graduated with a dual degree from the University of Sydney, majoring in Computer Science, Advanced Mathematics, and Finance. LinkedIn:   / valentinajemuovic   Twitter: https://x.com/valentinajemuov GitHub: https://github.com/valentinajemuovic Instagram:   / valentinajemuovic   Optivem: https://optivem.com Optivem Journal: https://journal.optivem.com TIMESTAMPS 0:00 Intro 3:23 About the speaker 3:48 Agenda 5:55 Hexagonal Architecture (Foundational Overview) 9:37 Test Automation (Test Pyramid & Deployment Pipeline) 17:33 E2E Testing (Verifying the e2e system behavior) 21:28 Component Testing (Verifying the microservice behavior) 26:23 Integration Testing (Verifying integration with infrastructure) 35:39 Unit Testing (Verifying application core behavior) 37:12 TDD & Microservices (Incrementalism and upfront design) 42:38 Code Demo Banking Kata on GitHub (Java) 1:00:41 Conclusion 1:03:52 QA TECH EXCELLENCE Subscribe to our YouTube channel    / @techexcellence   Join our Meetup Group https://www.meetup.com/techexcellence Follow us on LinkedIn   / techexcellenceio   Follow us on Twitter   / techexcellence_   Join our Discord Community   / discord   #testdrivendevelopment #tdd #unittesting #contracttesting #integrationtesting #testautomation #cleanarchitecture #hexagonalarchitecture #microservicearchitecture #techexcellence