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Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
Testing javascript
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Testing javascript

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Transcript

  • 1. Testing JavaScript with Jasmine
  • 2. Why should we test JavaScript?
  • 3. How many times have youchanged something in JavaScript
  • 4. Only to break something else?
  • 5. JavaScript = Production Code!
  • 6. Which means, we need to treat it with respect
  • 7. And, preserve the ability to
  • 8. change
  • 9. fix
  • 10. clean
  • 11. and refactor our JavaScript code
  • 12. Without fear of breaking something
  • 13. Testing is especially important when external factors can affect how our code functions
  • 14. What makes a good test?
  • 15. Think F.I.R.S.T
  • 16. Fast
  • 17. IndependentTests should not depend on each other.
  • 18. RepeatableAlways the same results, regardless of environment.
  • 19. Self-Validating Pass or FailNo manual evalutation.
  • 20. TimelyWrite tests before production code.
  • 21. Let’s look at an example.A random function for rolling a die.
  • 22. What’s wrong here?
  • 23. How do we normally debug JavaScript?
  • 24. Let’s forget we even mentioned that…
  • 25. So… we have this buggy code.
  • 26. What do we do about it?
  • 27. Write a failing test
  • 28. Then Run the test to see it fail
  • 29. SpecRunner.html
  • 30. Squash the bug
  • 31. Success!
  • 32. Add more tests
  • 33. Win!Testing = Documentation!
  • 34. Remember…
  • 35. When you find yourself wanting to do this.
  • 36. Write a test instead!
  • 37. Questions?

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