Driving Behaviour with Cucumber

This is a talk I gave at the Great Lakes Software Excellence Conference in 2009 on BDD and Cucumber.

Transcript

1. Driving Behaviour with Cucumber Zach Dennis Mutually Human Software www.mutuallyhuman.com
3. later... ...still joyful
4. a framework for writing and executing high level descriptions of your software’s behavior
7. Cucumber is not a low level testing/specification framework.
8. Cucumber is a BDD tool
9. BDD was reframing of TDD
10. It has evolved into its own
11. Dan North’s 3 Principles of BDD
12. 1. Enough is enough
13. 2. Deliver stakeholder value
14. 3. It’s all behaviour
15. how
17. I want ...
18. ok, why?
20. In order to reduce time managing contacts users should be able to search for contacts within their account
21. In order to reduce time managing contacts users should be able to search for contacts within their account value
22. In order to reduce time managing contacts users should be able to search for contacts within their account role
23. In order to reduce time managing contacts users should be able to search for contacts within their account behaviour
24. In order to reduce time managing contacts users should be able to search for contacts within their account searching contacts
25. searching contacts details
26. searching contacts details Searching by name
27. searching contacts details Searching by name Searching by partial name
28. searching contacts details Searching by name Searching by partial name Searching for non-existent person ...
29. searching contacts details Searching by partial name Given John Smith exists And I’ve logged in as a user When I search for Jo Then I should see John Smith is found
30. Organizing
31. Project Management Tools
33. Code Stories Acceptance Criteria Today
34. Code Stories Acceptance Criteria Near Distant Future
35. Code Stories Acceptance Criteria Future
36. Stories Acceptance Criteria Code
38. identify the behaviour first
39. everything else
40. Outside-In
41. UX/IA/IxD Views Controllers Models Database
42. UX, IA, IxD
43. Views
44. Controller
45. Models
46. Database
47. An Example
48. In order to reduce time managing contacts users should be able to search for contacts within their account
49. searching contacts details Searching by partial name Given John Smith exists And I’ve logged in as a user When I search for Jo Then I should see John Smith is found
51. feature title
52. narrative
53. notes
54. acceptance criteria
55. scenario title
56. steps
57. Gherkin
58. PROJ_ROOT/ features/ step_definitions/ support/ searching_contacts.feature lib/ test/
59. cucumber features/searching_contacts.feature executable
62. pending steps
63. file/line numbers
64. step definition snippets
66. Given “John Smith” exists first step
67. PROJ_ROOT/ features/ step_definitions/ support/ searching_contacts.feature lib/ test/ people_steps.rb
68. features/step_definitions/people_steps.rb
69. watch it fail
70. watch it fail backtrace
72. make it pass
73. step becomes method invocation Given “John Smith” exists Given /^([^“]+)” .../ step definition becomes method definition
74. capture groups become arguments
75. And I’ve logged in as a user 2nd step
76. features/step_definitions/people_steps.rb
77. watch it fail
79. make it pass
80. When I search for “Jo” 3rd step
81. features/step_definitions/search_steps.rb
82. watch it fail
83. add routes
84. still failing
85. add controller
86. still failing
87. add view
88. still failing
89. add search action
90. still failing
91. add the model
92. made it pass
93. Then I should see “John Smith” is found last step
94. features/step_definitions/people_steps.rb
96. make it pass
98. Rinse Repeat Lather
99. Stories In Features Out
102. features - customer audience tests/specs - developer audience
103. accurate, readable, executable, features
105. step tables
108. table#raw
110. table#hashes
112. table#rows_hash
113. scenario outlines
118. multi-line strings
120. background
123. tags tags
126. cucumber --tags @search, @wip
127. cucumber --tags ~@search,@wip
128. Hooks Transforms Framework Agnostic Wire Protocol Profiles
129. .NET - cuke4nuke
130. steps in .NET
131. JVM - cuke4duke
132. steps in java
133. steps in groovy
134. steps in scala
136. Resources • http://www.cukes.info • http://github.com/aslakhellesoy/cucumber • http://github.com/aslakhellesoy/cuke4duke • http://github.com/richardlawrence/Cuke4Nuke/