Unit Testing in Swift

Transcript

1. DO YOU WANT TO TALK ABOUT UNIT TESTIG IN SWIFT? #itsat @daloog ¯\_(ϑ)_/¯ Alexey Demedetskiy Sigma Software
2. THANK YOU APPLE!
3. 99% OF IOS APPS ARE SHIPPED WITH UNIT TESTING!
4. WORKOUT TIME!!
6. (˽°□°)˽Ɨ ˍʓˍ
7. ARE UNIT TESTS WORTH IT? HTTP://STACKOVERFLOW.COM/QUESTIONS/237000/IS- THERE-HARD-EVIDENCE-OF-THE-ROI-OF-UNIT-TESTING
8. TIME += 30% HTTP://COLLABORATION.CSC.NCSU.EDU/LAURIE/PAPERS/ TDDPAPERV8.PDF
9. DEFECTS -= 60% HTTP://RESEARCH.MICROSOFT.COM/EN-US/GROUPS/ESE/ NAGAPPAN_TDD.PDF
10. TESTS ARE GREAT!
11. !(ಠፅಠ!)
12. WHY WE ARE NOT RUBY?
14. 1) MARKET HUSTLE
15. 2) APPLE FRAMEWORKS
16. 3) LACK OF EXPERTISE
17. 4) OUTSOURCE
18. ⌛ ➡
19. UNIT TESTS ARE WRITTEN BY DEVELOPERS.
21. TESTS ARE DEVELOPERS RESPONSIBILITY
22. DON’T SELL THEM WRITE THEM
23. WHY DO WE NEED TO WRITE TESTS?
24. 1) REFACTORING
25. 2) CONFIDENCE
26. 3) CATCHING ERRORS
27. 4) REGRESSION
28. ➡❌➡⌨➡✅
29. HOW TO WRITE TESTS?
31. UNIT AS SMALLEST LOGIC CONTAINER
32. FUNCTION
33. INPUT ➡ OUTPUT
36. PURE FUNCTIONS
37. METHOD
38. MUTATION OF STATE
40. VOID ➡ VOID
41. INPUT ➡ OUTPUT
42. DOMAIN == CODOMAIN
43. ALL MY CODE IS FUNCTIONAL, WHERE EVERY FUNCTION TAKES ONE ARGUMENT: ALL MY PROGRAM'S STATE.
44. OBJECT
46. DEPENDENCIES
47. TRANSITIVE DEPENDENCIES
49. INITIAL STATE
50. ORDER OF OPERATIONS
51. UNIT AS SMALLEST LOGIC CONTAINER
53. TESTS
54. GWT
55. GIVEN WHEN THEN
57. AAA
58. ARRANGE ACT ASSERT
60. SRV
61. SETUP RECORD VERIFY
62. FUNCTIONS - GWT
63. METHODS - AAA
64. OBJECTS - SRV
65. VALUE TESTS
66. BEHAVIOR TESTS
67. INTEGRATION TESTS
68. CLIENT TESTS
69. PYRAMID OF TESTS HTTP://TODDLITTLEWEB.COM/WORDPRESS/2014/06/23/ THE-TESTING-DIAMOND-AND-THE-PYRAMID-2/
72. TEST COVERAGE HTTP://MARTINFOWLER.COM/BLIKI/ TESTCOVERAGE.HTML
75. TESTS
77. SIDE EFFECTS
78. RETURN VALUE
79. FUNCTION CALL
80. STATE CHANGE
81. SIDE EFFECTS
83. SWIFT
84. DEPENDENCIES
85. STRUCT
86. INTERNAL
88. PROTOCOL
89. EXTERNAL
90. XCTEST
91. QUICK / NIMBLE HTTPS://GITHUB.COM/QUICK/QUICK
92. RECORDER HTTPS://GIST.GITHUB.COM/ALEXEYDEMEDETSKIY/ 7A148559C81472A314F7
94. SWIFT
97. HTTPS://GITHUB.COM/XNEKOIX/FUNTIONALMVP
98. HTTP://WWW.AMAZON.COM/WORKING-EFFECTIVELY- LEGACY-MICHAEL-FEATHERS/DP/0131177052
99. HTTP://WWW.AMAZON.COM/EXTREME-PROGRAMMING- EXPLAINED-EMBRACE-EDITION/DP/0321278658
100. QUESTIONS: @DALOOG DALOG@ME.COM NOBIDON