Lessons Learned in Unit Testing

Why I am in love with unit testing, and why you should be too. Delivered at WordCamp San Francisco in July 2013.

Transcript

1. LESSONS LEARNED IN UNIT TESTING Alison Barrett WordCamp San Francisco 2013
3. 10 != 1
4. Write better code.
5. I want to inspire you.
6. Currently: Testing by debugging
7. We can do better.
8. Automation saves time Debugging is easier Code is future-proof Architecture is modular Tests double as documentation WHY?
9. AUTOMATION photo by pasukaru76
10. Good, Fast, Cheap. Pick two.
11. Writing unit tests: Good
12. Running unit tests: Good, Fast, Cheap
13. DEBUGGING photo by pasukaru76
14. ......F..F...F..FFF.......................... ran 45 tests these 6 failed
15. test_matches_browser_test MarkupA8CLinkTest 6) :: Failed asserting that 'test:/alisothegeek/?rev=3389asdf' does not match PCRE pattern "%(?<![\w/-])(test):\/([.\w \/-]+[\w\/])(\?rev=\d+)?(?![\w-])%". /path_to_file/MarkupA8CLinkTest.php:51 /path_to_file/MarkupA8CLinkTest.php:97 test class MarkupA8CLinkTest test function test_matches_browser_test failure failure location(s)
16. FUTURE-PROOF photo by dunechaser
17. Refactoring
19. MODULARITY photo by georgivar
20. Unit testing not entire class testing not contents-of-a-file testing
23. DOCUMENTATION photo by ercwttmn
25. WRAPPING UP photo by .guin
26. Write better code.
27. @alisothegeek alison.barre.tt QUESTIONS? All photos licensed under the Creative Commons Attribution license.