Better UI Testing with Swift Robots - CocoaConf Next Door San Jose, June 2017

My deck on using the Robot pattern for more readable, more flexible tests in Swift.

Codez: https://github.com/designatednerd/GoCubs

Transcript

1. ! ! ! ! ! ! ! ! ! ----------------------------------------- Better UI testing with Swift Robots CocoaConf Next Door | San Jose, CA | June 2017 @designatednerd | spothero.com | justhum.com ----------------------------------------- ! ! ! ! ! ! ! ! !
2. Preamble: UI vs. Unit Tests
3. Unit Tests Testing small pieces of independent code
4. UI Tests Try to use your application like a customer
5. UI Tests Try to use your application like a customer
6. UI Testing Frameworks
7. KIF
8. XCUI
9. Earl Grey
10. So which framework should you use?
12. You can use this technique with any or every UI testing framework
13. ! ! ! ! ! ! ! ! ! ------------------------- ROBOTS ------------------------- ! ! ! ! ! ! ! ! !
17. Separate the What from the how
18. Separate the What from the how
21. How can I steal adapt this idea for iOS?
23. ಠ_ಠ wtf does that mean?
27. Sample Code https://github.com/designatednerd/ GoCubs
28. Sample Code https://github.com/designatednerd/GoCubs
29. Sample Code https://github.com/designatednerd/GoCubs
31. K I F
32. X C U I
33. With DRY refactoring: KIF XCUI
35. With Robots:
37. ROBOTS * - aka controllers
38. More Composable test code
39. How can I steal improve this idea for Swift?
40. Protocols!
42. A brief interlude about #file and #line
45. ANYWAY
46. KIF
47. XCUI
48. Earl Grey
50. KIF XCUI
54. Earl Grey
55. Earl Grey
56. How does this technique scale for testing larger apps?
64. Protocol-Oriented Gotchas
66. Subclassing XCTest directly: ✅ class GoCubsXCUITests: XCTestCase { ❌ class GoCubsKIFTests: KIFTestCase { ✅ class GoCubsEarlGreyTests: XCTestCase {
67. MOAR PROTOCOLS!
69. Using the protocol instead: !!!!!!!!!!!!!!!!!!!!!!!!!!!! class GoCubsXCUITests: XCTestCase, RobotTests { class GoCubsKIFTests: KIFTestCase, RobotTests { class GoCubsEarlGreyTests: XCTestCase, RobotTests { !!!!!!!!!!!!!!!!!!!!!!!!!!!!
73. Using @testable import:
74. Using @testable import: ❌ class GoCubsXCUITests: XCTestCase, RobotTests { ✅ class GoCubsKIFTests: KIFTestCase, RobotTests { ✅ class GoCubsEarlGreyTests: XCTestCase, RobotTests {
77. Obligatory Summary Slide!
78. Obligatory Summary Slide! Robots will help you: - Separate what what from how
79. Obligatory Summary Slide! Robots will help you: - Separate what what from how - Keep your tests readable
80. Obligatory Summary Slide! Robots will help you: - Separate what what from how - Keep your tests readable - Swap out the underlying implementation
81. Obligatory Summary Slide! Robots will help you: - Separate what what from how - Keep your tests readable - Swap out the underlying implementation FREE ADVICE:
82. Obligatory Summary Slide! Robots will help you: - Separate what what from how - Keep your tests readable - Swap out the underlying implementation FREE ADVICE: - Giving techniques cool names makes it way more likely people will steal use them.
83. Links! — Earl Grey: https://github.com/google/EarlGrey — KIF: https://github.com/kif-framework/KIF — Jake Wharton on Kotlin Robots: https://realm.io/ news/kau-jake-wharton-testing-robots/ — Joe Masilotti on XCTest Helpers: http:// masilotti.com/xctest-helpers/
84. Question Time!
85. Photo Credits! — "Earl Grey" by Ana Ulin https://www.flickr.com/ photos/anaulin/164424396/ — "maybe now I'll get my texts" by frankieleon https:// www.flickr.com/photos/armydre2008/3935008214 — Cubs Winning The World Series, by Matt Slocum, AP https://www.nytimes.com/2016/11/03/sports/ baseball/chicago-cubs-beat-cleveland-indians- world-series-game-7.html