ViewControllerの単体テスト

ViewControllerの単体テストができるようにどうすればいいか。

Transcript

1. ViewControllerͷ୯ମςετ Swift 3ରԠ
2. ࣗݾ঺հ • ໊લɿίʔυώʔϤΞϯ • ग़਎ɿGrenoble • ৬ۀɿιϑτΤΞʔΤϯδχΞʔ • ։ൃܦݧɿDelphiʢ7೥ʣɺSwiftʢ̍೥ʣ • Facebookɿhttps://www.facebook.com/yoann.coldefy • Twitterɿ@luinily
3. גࣜձࣾΨϥύΰε • εϚϗΞϓϦͷ։ൃɺӡӦ • σΟϨΫλʔɺΤϯδχΞʔɺ σβΠφʔɺςελʔ • 35ਓ • web: https://www.glpgs.com/
4. ΤϯδχΞʔืूதʂ
5. • લճ͸CleanSwiftͷ঺հ • CleanSwift͸ςετۦಈ։ൃ͕جຊ • ViewControllerͷςετ͸Ͳ͏ͳͬͯΔʁ
6. ViewControllerͱ͸Կʁ • ΞϓϦͷҰͭͷը໘Λίϯτϩʔϧ͢ΔΫϥε • Ͳ͜ʹԿΛදࣔ͢Δ • Ϣʔβ͕ૢ࡞ͨ࣌͠ʹΞϓϦ͸Ͳ͏൓Ԡ͢Δ
7. ୯ମςετ͸ʁ • ϓϩάϥϜͷҰ෦Λࣗಈతʹςετ͢Δ • ૝ఆ͞ΕͯΔ݁Ռͱ࣮ࡍͷ݁Ռ͕ಉ͔͡Λ֬ೝ͢Δ
 
 ྫɿը໘͕දࣔ͞Εͨ࣌ʹϥϕϧͷςΩετ͕ ʮTestʯʹͳ͍ͬͯΔ͔Ͳ͏͔ɻ
8. ͳͥ୯ମςετΛॻ͘ʁ • ग़དྷ্͕ͬͨϓϩάϥϜ͕࢖༻௨Γʹಈ࡞Λ͍ͯ͠Δ ͷΛࣗಈతʹςετͰ͖Δɻ • ϓϩάϥϜͷमਖ਼΍มߋͰಈ͔ͳ͘ͳͬͨͱ͜ΖΛൃ ݟ͠΍͘͢͢Δ • ࣮૷ͷπʔϧͷҰͭ
9. λΠτϧ ը૾ ςΩετ Ϙλϯ ViewController title: Label
 picture: ImageView text: TextView button: Button
10. ViewControllerͷ࣮ମԽͷ໰୊ • ViewController͸͍͔ͭ͘ͷViewΛ͍࣋ͬͯΔ͕ • ViewController͕ͦͷViewΛ࣮ମԽͤͯ͞Δ༁Ͱ͸ͳ͍ • ୯ମςετ༻ViewControllerͷΠϯελϯεΛ࡞ͬͨͩ ͚ͰɺϏϡʔ͸nilͷ··
11. ςετͰViewController
 ͷ࣮ମԽ͸Ͳ͏͢Δʁ
12. func setupViewController() { let storyboard = UIStoryboard(name: "MyStoryboard", bundle: Bundle.main) if let viewController = storyboard.instantiateInitialViewController() as? MyViewController { target = viewController } } ී௨ʹStoryboardͳͲ͔ΒͰ͖·͢ɻ class RegisterAccountViewControllerTests: XCTestCase { // MARK: Subject under test var target: MyViewController!
13. ͜Ε͚ͩͩͱϏϡʔ͕
 ϩʔυ͞Εͳ͍ɻ
14. WindowΛ௥Ճͯ͠ɺϏϡʔΛϩʔυ͠·͢ɻ class RegisterAccountViewControllerTests: XCTestCase { // MARK: Subject under test var target: MyViewController! var window: UIWindow! ← New! func loadView() { window.addSubview(target.view) RunLoop.current.run(until: Date()) } ඞཁ͚ͩͲཧ༝͕Θ͔Βͳ͍
15. loadViewΛݺΜͩΒɺϏϡʔ͕ϩʔυ͞Εͯɺ viewDidLoad͕ݺ͹Ε·͢ɻ
 ςετͰ͖·͢ʂ
16. ͲΜͳ͜ͱΛςετ͢Δʁ
17. ViewDidLoadͰઃఆ͞ΕΔ΋ͷ override func setUp() { dataSource = MockDataSource() target.dataSource = dataSource } func test_viewDidLoad_shouldSetTheTableDataSource() { // Arrange // Act loadView() // Assert XCTAssertTrue(target.tableView.dataSource === dataSource) }
18. func test_viewDidLoad_shouldSetTheHandlersToTheTableDataSource() { // Arrange // Act loadView() // Assert XCTAssertNotNil(dataSource.handlers) } ViewDidLoadͰઃఆ͞ΕΔ΋ͷ
19. • ϥϕϧͷςΩετ • αϒϏϡʔͷঢ়ଶ • ͳͲ
20. ઃఆɺߦಈͳͲΛςετͯ͠ ࢓༷௨ΓʹͰ͖ͯΔ͔ ֬ೝͰ͖·͢
21. Կ͔Πϕϯτ͋ͬͨ࣌ func test_textChanded_shouldCallValidateText() { // Arrange // Act dataSource.handlers?.textChangeHandler("newText") // Assert XCTAssertTrue(validatorSpy.validateTextCalled) }
22. Կ͔Πϕϯτ͋ͬͨ࣌ func test_buttonPushed_labelTextShouldBe_New() { // Arrange // Act target.newButtonPush(nil) // Assert XCTAssertTrue(target.label.text, "New") }
23. UITableViewControllerͷ৔߹ɺ DataSourceɺDelegateͷςετ΋Ͱ͖·͢ɻ
24. protocolͷ֤ؔ਺ͷςετͰ͖·͢ func test_numberOfSections_shouldReturn6() { // Arrange // Act let numberOfSections = target.numberOfSections(in: tableViewController.tableView) // Assert XCTAssertEqual(numberOfSections, 6) }
25. protocolͷ֤ؔ਺ͷςετͰ͖·͢ func test_numberOfRowsInSection_section1_shouldReturn2() { // Arrange // Act let numberOfRows = target.tableView(tableViewController.tableView, numberOfRowsInSection: 1) // Assert XCTAssertEqual(numberOfRows, 2) }
26. protocolͷ֤ؔ਺ͷςετͰ͖·͢ func test_cellForRowAt_row0Section5_shouldBeButtonCell() { // Arrange let indexPath = IndexPath(row: 0, section: 5) // Act let cell = target.tableView(tableViewController.tableView, cellForRowAt: indexPath) // Assert XCTAssertTrue(cell is ButtonCell) }
27. UITableViewͷΦϒδΣΫτ͕ඞཁ ViewController͝ͱ࡞ͬͯɺϏϡʔΛϩʔυ͢Δ
28. ςʔϒϧͷߏ੒ɺ
 ηϧͷछྨ΍ઃఆͳͲͷ ςετ͕Ͱ͖·͢
29. ·ͱΊ • ViewController΍DataSourceͳͲͷςετ͸Մೳ • ςετΛॻ͘͜ͱͰ࢓༷௨Γʹಈ͍ͯΔͷࣗಈ తʹ֬ೝͰ͖Δ • ҆৺ͯ͠ϦϑΝΫτϦϯάͰ͖Δ
30. ·ͱΊ • ࢓༷͕มΘΔͱςετͷमਖ਼͕ඞཁ • ςετΛॻ͘͜ͱ΋͔͔࣌ؒΓ·͢