Testing Layers - ngBigParty

A shorter version of my Testing Layers talk, adapted for ngBigParty conference in Prague 12.10.2016

Transcript

1. TESTING LAYERS
2. ANDREI PFEIFFER /andreipfeiffer @pfeiffer_andrei
3. // code designer
4. // organizer & speaker
5. #devsUnited
6. unit integration end to end
7. many - few
8. unit
9. +do() System Under Test +get() SUT
10. what to test? public API no private code our own code no 3rd party code business logic no GUI
11. how to test? white box isolate stubs / mocks
12. http xhr db disk SUT dep.
13. http xhr db disk SUT dep. fake
14. http xhr db disk SUT dep. fake fake
15. integration
16. aka. component testing
17. what to test? database disk I/O units communication
18. how to test? white box use real objects no stubs / mocks test database fixtures
19. real db SUT test db
20. end to end
21. aka. GUI, acceptance, system
22. what to test? use cases, features
23. how to test? setup entire app black box simulate user events
24. SUT go to login submit form focus input type email entire app
25. speed
26. fast slower even slower
27. unit: integration: end-2-end: 0.62 sec 3.00 sec 21.70 sec
28. unit: integration: end-2-end: 62 sec 5.0 min 36.1 min x100
29. integration level confidence run frequency setup high high low complex low low high simple e2e unit speed low high maintainability fragile solid
30. Díky !!!