BDD for Rails Legacy Code
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This document discusses using Behavior Driven Development (BDD) tools like Cucumber, Webrat, and RSpec to test legacy Rails code. It provides an overview of BDD and these tools, and how they can be used to test Rails models, controllers and views through features, mocking objects, and message expectations. While useful for testing legacy code, the document notes there is no silver bullet and BDD requires ongoing changes to keep tests and code in sync.
BDD for Rails Legacy Code
- 1. BDD for Rails Legacy Code
- 2. About Me Lu Wei Jen Rails Developer http://blog.weijen.net http://www.facebook.com/ weijenlu Twitter: weijenlu
- 3. 10
- 6. 10
- 7. Legacy Code
- 8. Agenda • • BDD • BDD • Legacy Code • Legacy Code
- 9. • • • •
- 10. Changes Changes Changes Changes Changes Changes
- 13. BDD • Behavior Driven Development • •
- 14. BDD Tools for Rails • Cucumber • Webrat • RSpec
- 15. Cucumber • • •
- 16. Cucumber
- 17. Cucumber
- 18. Cucumber Mock Object
- 19. Webrat • • • • form •
- 20. Webrat: • visit "http://rubyconf.tw" • click_link " "
- 21. Webrat: Form • file_in " ", :with => "weijen" • check " " • select " ", :from => " " • click_button
- 22. Webrat: • response.should contain(" ") • response.should have_selector("img.photo")
- 23. RSpec
- 24. • • • • •
- 25. • • •
- 26. • Waybill model #set_customer • Waybills_controller #create
- 27. Model
- 28. Model
- 31. Mock Object • my_mock = mock(name) • my_mock = mock(name, stubs) • my_mock = mock_model(name, stubs)
- 32. • my_mock.stub!(:msg).with(args).and_return(value)
- 33. Message Expectation • my_mock.should_receive(:msg).with(args).and_r eturn(value)
- 34. Mock
- 37. Controller
- 38. Controller
- 39. Cucumber
- 40. •
- 48. • +
- 54. • No Silver Bullet • •
- 55. Q &A