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FBSnapshotTestCaseに助けられた話
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yutu
February 09, 2017
Programming
1
2.7k
FBSnapshotTestCaseに助けられた話
Kyobashi.swift x AKIBA.swift 合同勉強会
2017/02/08
yutu
February 09, 2017
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Transcript
FBSnapshotTestCase ʹॿ͚ΒΕͨ Yuki Hirai Kyobashi.swift x AKIBA.swift ߹ಉษڧձ 2017/02/08
ฏҪ༞थͩʔʂ • 31ࡀɻطࠗ • དྷि͙Β͍ʹ͕ੜ͢Δ • RMP • iOS Engineer
FBSnapshotTestCaseʹ ॿ͚ΒΕͨΛ͠·͢
͙Β͍લɾɾɾ Φοεʂ࣍ͷϓϩδΣΫτདྷͨͧʔ ແअؾˁ طࠗˁ
͙Β͍લɾɾɾ Φοεʂ࣍ͷϓϩδΣΫτདྷͨͧʔ 0,ͬ͢ʂͲ͏͍͏ํͰ࡞͍͖ͬͯ·͢ʁ ແअؾˁ طࠗˁ
͙Β͍લɾɾɾ ͦ͏ͩͳɾɾɾ ແअؾˁ طࠗˁ
͙Β͍લɾɾɾ ࠷ۙ$MFBO4XJGUྑͦ͞͏ͩͱࢥͬͯ͊͞ɺͦΕ࠾ ༻ͭͭ͠#PMUTͱ͔͍͍ײ͡ʹͬͯॻ͜͏ͱࢥͬ ͯͯɺ͋ͬɺ͋ͱΧόϨοδશମͰͱΓͨ ͍ͱ͜ΖͩΑͶɻ͋ͱTXJGUMJOUΨονΨνʹೖΕ ͯ͞ʂ͍͍ײ͡͡ΌͶʂʁ4XJOKFDUಋೖ͠Α ͏ʂྃ݅ʹՃ͠Α͏ʂʂ ແअؾˁ طࠗˁ
͙Β͍લɾɾɾ ࠷ۙ$MFBO4XJGUྑͦ͞͏ͩͱࢥͬͯ͊͞ɺͦΕ࠾ ༻ͭͭ͠#PMUTͱ͔͍͍ײ͡ʹͬͯॻ͜͏ͱࢥͬ ͯͯɺ͋ͬɺ͋ͱΧόϨοδશମͰͱΓͨ ͍ͱ͜ΖͩΑͶɻ͋ͱTXJGUMJOUΨονΨνʹೖΕ ͯ͞ʂ͍͍ײ͡͡ΌͶʂʁ4XJOKFDUಋೖ͠Α ͏ʂྃ݅ʹՃ͠Α͏ʂʂ ͑ͬʁ3Y4XJGU͕ྑ͍ͳɾɾɾͰ࣮͋ ΔΈ͍ͨͩ͠ͳ͊ɾɾ͔͠ͳΜָ͔ͦ͠ ͏ʹͯ͠Δ͠ɾɾɾ·͍͔͊ͬ
͍ʂʂ ແअؾˁ طࠗˁ
࣮ணख طࠗˁ
࣮ணख طࠗˁ ྑ͍ײ͡
͠Βͯ͘͠ɾɾɾ ɾɾɾ ແअؾˁ طࠗˁ
͠Βͯ͘͠ɾɾɾ ͬͺ3Y4XJGUͰ͍͜͏ʂX ແअؾˁ طࠗˁ
͠Βͯ͘͠ɾɾɾ ͬͺ3Y4XJGUͰ͍͜͏ʂX ແअؾˁ طࠗˁ ͓͍X
͜͏ͯ͠ॻ͖͕͑ ͡·ͬͨ
͔͠͠৺ແ༻ʂ
͜Μͳ͜ͱ͋Ζ͏͔ͱ ൿࡦΛ४උ͍ͯͨ͠ͷͩʂ
FBSnapshotTestCase • https://github.com/facebook/ios-snapshot- test-case • UIView/CALayer ͷεφοϓγϣοτͱ͋Β͔ ͡Ί༻ҙͨ͠ը૾Λൺֱͯ͠ɺҰக͠ͳ͍ ߹ςετࣦഊʹͰ͖Δ •
XCTestCaseͷαϒΫϥε
Nimble-Snapshots • https://github.com/ashfurrow/Nimble- Snapshots • FBSnapshotTestCaseΛ Nimble ͷ matcher ͱ
ͯ͠ఆٛ
Nimble-Snapshots expect(view).to(haveValidSnapshot()) expect(view).to(haveValidSnapshot(named: "some custom name")) expect(view) == snapshot() expect(view)
== snapshot("some custom name") (view) (view, "some custom name")
import UIKit import Quick import Nimble import Nimble_Snapshots @testable import
ScreenShotExample final class ViewControllerSpec: QuickSpec { override func spec() { describe("view") { var subject: ViewController! var window: UIWindow! beforeEach { window = UIWindow() let bundle = Bundle.main let storyboard = UIStoryboard(name: "Main", bundle: bundle) subject = storyboard.instantiateViewController(withIdentifier: "ViewController") as! ViewController window.addSubview(subject.view) RunLoop.current.run(until: Date()) } afterEach { window = nil } it("displays correctly") { (subject) // expect(subject).toEventually(haveValidSnapshot()) } } } ʩ
import UIKit import Quick import Nimble import Nimble_Snapshots @testable import
ScreenShotExample final class ViewControllerSpec: QuickSpec { override func spec() { describe("view") { var subject: ViewController! var window: UIWindow! beforeEach { window = UIWindow() let bundle = Bundle.main let storyboard = UIStoryboard(name: "Main", bundle: bundle) subject = storyboard.instantiateViewController(withIdentifier: "ViewController") as! ViewController window.addSubview(subject.view) RunLoop.current.run(until: Date()) } afterEach { window = nil } it("displays correctly") { (subject) // expect(subject).toEventually(haveValidSnapshot()) } } } ʩ ύγϟϦʂ
Nimble-Snapshots
import UIKit import Quick import Nimble import Nimble_Snapshots @testable import
ScreenShotExample final class ViewControllerSpec: QuickSpec { override func spec() { describe("view") { var subject: ViewController! var window: UIWindow! beforeEach { window = UIWindow() let bundle = Bundle.main let storyboard = UIStoryboard(name: "Main", bundle: bundle) subject = storyboard.instantiateViewController(withIdentifier: "ViewController") as! ViewController window.addSubview(subject.view) RunLoop.current.run(until: Date()) } afterEach { window = nil } it("displays correctly") { // (subject) expect(subject).toEventually(haveValidSnapshot()) } } } ʩ
import UIKit import Quick import Nimble import Nimble_Snapshots @testable import
ScreenShotExample final class ViewControllerSpec: QuickSpec { override func spec() { describe("view") { var subject: ViewController! var window: UIWindow! beforeEach { window = UIWindow() let bundle = Bundle.main let storyboard = UIStoryboard(name: "Main", bundle: bundle) subject = storyboard.instantiateViewController(withIdentifier: "ViewController") as! ViewController window.addSubview(subject.view) RunLoop.current.run(until: Date()) } afterEach { window = nil } it("displays correctly") { // (subject) expect(subject).toEventually(haveValidSnapshot()) } } } ʩ
DEMO https://github.com/yutu/ScreenShotExample
ແࣄΓӽ͑ͨʂ
͔͠͠ຊʹා͍ͷɾɾɾ
࣮ɾɾɾ ແअؾˁ طࠗˁ
ͲͬͪͰͨ͠ ແअؾˁ طࠗˁ
͔ͯ͘͠ FBSnapshotTestCaseʹ ॿ͚ΒΕ·ͨ͠
FBSnapshotTestCase ͷ͍͍ͱ͜Ζ • ΞʔΩςΫνϟOSSʹґଘ͠ͳ͍ςετ͕ॻ͚Δ • අ༻ରޮՌ͕ߴ͍ • XcodeͰΧόϨοδΛܭଌͰ͖Δ • PRͰεφοϓγϣοτͷdiff͕ݟΕΔ
• CircleCI Ͱී௨ʹಈ͘ • TDDͰ͖Δ
ؾΛ͚͍ͭͨ͜ͱ • ϢχοτςετΛॻ͔ͳͯ͘ྑ͍Θ͚Ͱͳ͍ • IT͢Δ߹࣮ߦ͢ΔσόΠεͱiOS verʹҙ • UIΛར༻ͨ͠ςετ ≠ E2Eςετ
• ʮͳͥɾͲ͜·ͰςετΛॻ͔͘ʢॻ͔ͳ͍ ͔ʣʯΛৗʹҙࣝ͢Δ
ʴΞϧϑΝ • CircleCI + fastlane (scan/slather) ͰΧόϨο δܭଌ • swiftlintʢͱ͘ʹ
cyclomatic_complexityʣ • Swinject
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠