Test-driven development with PHPUnit

Transcript

1. Test-driven 
 development 
 with PHPUnit Oliver Klee, 2022-08 @oliklee | Mastodon: oliklee@chaos.socail | typo3-coding@oliverklee.de
2. About me Oliver „Oli“ Klee #bonn #extension-dev #workshop-teacher #unit-testing-guy #phpstan-guy #typo3-ombudsperson #typo3-quality-assurance-initiative #gami fi cation-working-group #game-cooking #powermetal
3. ???
4. The goals ✓ You have a clearer understanding on how TDD works. ✓(optional) You get test-infected. ✓You learn at least 1 new testing pattern. ✓We all have fun.
5. The travel plan 1. getting starte d 2. concepts & term s 3. testing pattern s 4. hands-o n 5. naming test s 6. hands-o n 7. ending & feedback
6. The rules 1. There are no stupid questions. 2. The joker rule.
7. The travel plan 1. getting starte d 2. concepts & term s 3. testing pattern s 4. hands-o n 5. naming test s 6. hands-o n 7. ending & feedback
8. Unit
 Tests?
9. Manual testing is cumbersome
10. Automated
 testing 
 is fast
11. Unit tests for the 
 TYPO3 Core
12. Unit Tests
 406 (144) tests/s
13. Functional Tests
 8.13 (1.97) tests/s
14. Acceptance Tests
 .009 (.003) tests/s
15. Verify that your code does what you expect
16. Make sure that 
 your changes won‘t
 break anything
17. Keep others 
 from breaking your code
18. Don’t break anything 
 even in complex 
 projects
19. Create a safety net for refactoring or for 
 TYPO3 updates
20. Improve the structure of your code
21. Find the location of bugs
22. Green feels good!
23. Let’s get
 some terms
 straight
24. The two programming modes clean hacky
25. Testsuite Testcase Test Assertion Test Test Testcase
26. The life cycle of a test new FooTest(); setUp(); /** @test */ lifeIsGood(); tearDown();
27. Code test-first write
 test write
 code refactor
28. The travel plan 1. getting starte d 2. concepts & term s 3. testing pattern s 4. hands-o n 5. naming test s 6. hands-o n 7. ending & feedback
29. The travel plan 1. getting starte d 2. concepts & term s 3. testing pattern s 4. hands-o n 5. naming test s 6. hands-o n 7. ending & feedback
30. https://github.com/TYPO3-Documentation/tea/ Branch: workshop/t3dd22 File: Exercises.md
31. The travel plan 1. getting starte d 2. concepts & term s 3. testing pattern s 4. hands-o n 5. naming test s 6. hands-o n 7. ending & feedback
32. Naming
 Tests
33. Use meaningful test names classCanBeInstantiated setTitleSetsTitle setSizeWithZeroThrowsException hasTitleForEmptyTitleReturnsFalse Name the behavior. Name the preconditions. Name the method. Don’t use 
 “works” or 
 “works correctly”. measureFrubbleWorksCorrectly
34. The travel plan 1. getting starte d 2. concepts & term s 3. testing pattern s 4. hands-o n 5. naming test s 6. hands-o n 7. ending & feedback