Swift Testing and Architecture

Transcript

1. Testing @DanToml
2. What? Test noun: A procedure intended to establish the quality, performance, or reliability of something, especially before it is taken into widespread use.
3. Why?
4. Tools
5. XCTest // Contrived example test for a mythical add function func test_can_add_two_numbers() { // arrange let firstNumber = 1 let secondNumber = 1 let expectedResult = 2 // act let ! = add(firstNumber, secondNumber) // assert XCTAssertEqual(!, expectedResult) }
6. FBSnapshotTestCase // https://github.com/facebook/ios-snapshot-test-case func test_taylor_swift_view_displays_correct_image() { let viewModel = TaylorSwiftImageViewModel.testViewModel() let sut = TaylorSwiftImageView(viewModel: viewModel) FBSnapshotVerifyView(sut) }
7. OHHTTPStubs OHHTTPStubs.stubRequestsPassingTest({$0.URL!.host == "mywebservice.com"}) { _ in // Stub it with our "wsresponse.json" stub file (which is in same bundle as self) let fixture = OHPathForFile("wsresponse.json", self.dynamicType) return OHHTTPStubsResponse(fileAtPath: fixture!, statusCode: 200, headers: ["Content-Type":"application/json"]) }
8. UI Testing
9. Code Coverage
10. Architecture
11. Modal View Controller
12. Massive View Controller
13. Breaking it out
14. MVVM Model-View-ViewModel
15. Dependency Injection & Composability
16. Clarity
17. Use what works for you
18. Lets talk about Testing
19. Singletons
20. View Models
21. Views
22. View Controllers
23. Non-View Controllers
24. Resources 4 I'll be releasing a sample project on GitHub at some point in the next week or two. 4 ObjC.io VIPER: http://bit.ly/1Ht1V6Y 4 ObjC.io MVVM: http://bit.ly/1UNLXJf 4 ObjC.io Lightweight View Controllers: http://bit.ly/ 1K1wAtw 4 WWDC Session 229
25. Questions? Find me on Twitter: @dantoml