This document discusses RSpec matchers and provides examples of how to use different matchers. It shows matchers for equality, truthiness, object types, value ranges, object changes, regular expressions, file existence, method responses, object counts, inclusion, errors/exceptions, and satisfying blocks. Examples are given using common Ruby objects and methods.

1. by whatsound
RSpec

2. LiveCoding#7
( )
...

3. (@Sixeight)

4. [ ]
You.should join(:us)

5. Case -> Matchers

7. test-unit 2.0.5

8. Test::Unit + Shoulda
Test::Unit + Coulda

10. RSpec

11. CASE:

13. 1.should == 1

14. 1.should == 1

15. 1.should == 1

16. 1.should == 1

17. 1.should == 1

20. Matchers

21. he.should play(:piano)

22. he.should play(:piano)

23. CASE:

25. [].empty? == true

26. [].empty?.should == true

27. ×
[].empty?.should == true

28. Predicates

29. be_xxx

30. [].should be_empty

31. [].should be_empty
[].empty?

32. be_true
be_false
be_nil
be_activate

33. be_a_xxx
be_an_xxx

34. be_a_kind_of(*args)
be_an_instance_of(*args)

35. CASE:

36. 1.05 1.15

37. be_close(expected, delta)

38. value.should be_close(1.1, 0.5)

39. CASE:

41. change(receiver, message, &block)

42. #
lambda {
Date(2009, 7, 6).next
}.should change(hitagi, :age).by(1)

43. #
lambda {
Date(2009, 7, 6).next
}.should change(hitagi, :age).by(1)

44. #
lambda {
Date(2009, 7, 6).next
}.should change(hitagi, :age).by(1)

45. CASE:

47. 5 == 5

48. 5.should eql(5)

49. obj == other

50. obj.should equal(other)

51. /hane/ =~ ‘hanekawa’

52. ‘hanekawa’.should match(/hane/)

53. CASE:

55. exist

56. File.should exist(‘staple’)

57. CASE:

59. i.should respond_to(:say)

60. i.should respond_to(:say).
with(‘love you’)

61. CASE:

63. have(n)

64. hitagi.should have(140).stationeries

65. hitagi.should have(140).stationeries

66. have == have_exactly

67. n

68. nadeko.should have_at_least(2).snakes

69. n

70. have_at_most

71. CASE:

73. [1, 2, 3].should include(2)

74. [1, 2, 3].should include(1, 3)

75. CASE:

77. lambda {
danger_method
}.should raise_error

78. Throw

79. lambda {
pitcher_method
}.should throw_symbol

80. CASE:

81. true

82. satisfy

83. oshino.satisfy do |o|
o.battles_against(:me)
o.battles_against(:you)
o.alive?
end

84. RSpec
Matcher

86. RDoc
http://rspec.rubyforge.org/rspec/1.2.9/

88. you.should have_at_least(1).question