Practical Testing in iOS

Presented at Devnot Mobile 2023 Conference.

Explained where to write tests. Demonstrated methods and approaches on how iOS teams around the world are writing tests.

Transcript

1. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Practical Testing in iOS
2. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Hello Devnot
3. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN 2010 - Today
4. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN nsistanbul.com
5. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN kanvas.istanbul
6. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN
7. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN @seyfoyun
8. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN
9. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN iOS Testing Today
10. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Testing is standard for all teams.
11. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN But is it?
12. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN PRACTICAL Testing for iOS
13. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Why Tests?
14. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Results in more modularized code
15. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Define better specs
16. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN As project grows larger, saves your 🍑
17. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Types of Tests
18. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Unit Tests
19. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Unit → smallest piece of code
20. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN fast.
21. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN small.
22. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN reliable.
23. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN 8000 Shopify Android
24. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN 10000 Airbnb iOS
25. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN 30000 Nordstrom iOS
26. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN XCTest
27. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN XCTest
28. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Where to Write Unit Tests?
29. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Custom Logic
30. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN View Models
31. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Presenters
32. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Routing
33. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Serialization
34. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Mutable State
35. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN State Machines
36. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Bindings
37. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Data Sources
38. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Data Stores
39. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Extensions
40. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Custom Classes
41. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN BDD (Behavior Driven Development)
42. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Quick (Nimble)
43. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN
44. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Quick (Nimble) Advantages • More matching methods • Easier async tests
45. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Quick (Nimble) • Easier async tests
46. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Mocking
47. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Mocker
48. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Mocker
49. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Mocker
50. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Integration Tests
51. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Integration Tests
52. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN UI Tests
53. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN UI Automation Tests
54. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN XCUITest
55. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN XCUITest
56. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN XCUITest
57. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN UI Automation Tests are • Clunky (slow) • Prone to errors • Repetitive
58. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Appium (JS, Python, Java, Ruby)
59. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN XCUITest
60. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Robot Pattern
61. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Robot Pattern
62. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Robot Pattern
63. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Robot Pattern
64. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Robot Pattern
65. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Robot Pattern
66. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Page Object Pattern
67. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Page Object Pattern
68. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Page Object Pattern
69. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Page Object Pattern
70. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Snapshot Tests
71. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Pass in static data
72. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Take screenshots of different UIs & UI states
73. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Verify screenshots
74. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Turn record mode off
75. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN iOSSnapshotTestCase (formerly FBSnapshotTestCase)
76. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN SnapshotTesting
77. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN SnapshotTesting
78. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN SnapshotTesting Downsides • Repository can grow large after many tests • Some teams store reference images in another repository • Add CI jobs to fetch reference images and run snapshot tests afterwards
79. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Are We Late to Start Testing?
80. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Start by writing tests to new features only
81. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Tests need to be written when refactoring
82. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Code where bug fixes are being made should be tested
83. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Integration tests are a good way to start
84. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Writing snapshot tests are quick and easy
85. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Plus, you’ll have a better connection with your designer
86. SEYFEDDIN BASSARAC DEVNOT MOBILE 2023 APRIL 2023 @SEYFOYUN SEYFEDD.IN Thank you.