Better JavaScript with Jasmine

Transcript

1. Better Javascript with Jasmine

2. I don’t test my JavaScript because ______________

3. “Semicolons are for losers”

4. “It can’t be automated”

5. “I already test it with Cucumber”

6. “I don’t have any REAL BUSINESS LOGIC in my JavaScript”

7. “It’s too hard”

8. “It changes too often”

9. “I’m lazy”

10. “It’s not worth the effort”

11. I have [ ] more [ ] less JavaScript in

    my code than I used to.

12. I have [ X ] more [ ] less JavaScript

    in my code than I used to.
13. None

14. Rubyists need not fear

15. the authors may have seen RSpec before

16. describe RomanNumeral do it "should convert I to 1" do

    subject = RomanNumeral.new("I") subject.to_i.should eq(1) end end

17. describe("RomanNumeral", function() { it("returns 1 for I", function() { var

    subject = new RomanNumeral("I"); return expect(subject.toI()).toBe(1); }); });

18. basics

19. RSpec Jasmine describe User do describe(“User”, function() it “saves stuff”

    do it (“saves stuff”, function() value.should expect(value)

20. matchers

21. RSpec Jasmine name.should eq(“Todd”) expect(name).toBe(“Todd”); (3*3).should_not == 8 expect(3*3).not.toBe(8); be,

    eql, equal, ==, === toEqual, toBe
22. None
23. None

24. RSpec Jasmine 7.should be_true expect(7).toBeTruthy(); (7).should_not be(true) expect(7).not.toBe(true); nil.should be_false

    expect(null).toBeFalsy();

25. RSpec Jasmine [‘a’,’b’].should include(‘a’) expect([3,4]).toContain(4); (1.05).should be_close(1, 0.06) expect(1.05).toBeCloseTo(1, 0)

    nil.should be_false expect(null).toBeFalsy();

26. toBeDefined / toBeUndefined toMatch(/regex/) toThrow custom matchers as well

27. beforeEach afterEach

28. xdescribe xit

29. None

30. test doubles

31. None

32. spies

33. None
34. None
35. None
36. None
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38. None
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40. None

41. stubs

42. None

43. jasmine-stealth

44. None

45. fakes

46. None

47. mocks

48. ease of use

49. None
50. None
51. None

52. but, semicolons are still for losers

53. describe("RomanNumeral", function() { it("returns 1 for I", function() { var

    subject = new RomanNumeral("I"); return expect(subject.toI()).toBe(1); }); });

54. describe "RomanNumeral", -> it "returns 1 for I", -> subject

    = new RomanNumeral("I") expect(subject.toI()).toBe 1

55. Great, so how do I run this stuff?

56. www.tryjasmine.com

57. None

58. Jasmine standalone

59. https://github.com/ pivotal/jasmine/ downloads

60. None

61. Jasmine within Rails

62. gem install jasmine

63. jasmine-headless-webkit

64. None
65. None

66. gem install jasmine-rails

67. Available for other enviroments as well

68. what now?

69. it’s not that hard

70. it is important

71. you have no excuses

72. Thanks! @toddkaufman @testdouble