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Testing Layers - ngBigParty

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Avatar for Andrei Pfeiffer Andrei Pfeiffer
October 13, 2016
Programming
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Testing Layers - ngBigParty

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

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Andrei Pfeiffer

October 13, 2016
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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 !!!