2 TOOLS AN iOS developer NEEDS TO KNOW Felizia Bernutz – 28.11.2018 – TH Nürnberg

learn about 2 tools we use at our daily work as iOS developers

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SWIFTLINT & FASTLANE

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SWIFTLINT

A tool to enforce Swift style and conventions — SwiftLint2 2 https://github.com/realm/SwiftLint

Why?

...because code style matters!

...because code style matters, right?

Watch the talk4 from JP Simard from Realm ON THE IDEAS BEHIND SWIFTLINT 4 https://academy.realm.io/posts/slug-jp-simard-swiftlint/

How?

#1

INSTALLATION ▸ With HomeBrew (global level) brew install swiftlint ▸ With CocoaPods (project level) pod 'SwiftLint' ▸ Install CocoaPods with sudo gem install cocoapods

#2

Add new RUN SCRIPT PHASE

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#3

Define RULES1 1 https://github.com/realm/SwiftLint/blob/master/Rules.md

Type of Rules 1. Stylistic Rules

1. STYLISTIC RULES attributes // before @IBAction func showSomething() { ... }

1. STYLISTIC RULES attributes // before @IBAction func showSomething() { ... } // after @IBAction func showSomething() { ... }

1. STYLISTIC RULES vertical_parameter_alignment // before func buy(bananas: [Banana], withPlasticBag: Bool, isBio: Bool) { print("buy banana") }

1. STYLISTIC RULES vertical_parameter_alignment // after func buy(bananas: [Banana], withPlasticBag: Bool, isBio: Bool) { print("buy banana") }

Type of Rules 1. Stylistic Rules 2. Hygenic Rules

2. HYGENIC RULES ▸ File length ▸ Line length ▸ Body length

Type of Rules 1. Stylistic Rules 2. Hygenic Rules 3. Convention Rules

3. CONVENTION RULES legacy_cggeometry_functions // before let isInfinite = CGRectIsInfinite(rect)

3. CONVENTION RULES legacy_cggeometry_functions // before let isInfinite = CGRectIsInfinite(rect) // after let isInfinite = rect.isInfinite

Type of Rules 1. Stylistic Rules 2. Hygenic Rules 3. Convention Rules 4. Code Smells

4. CODE SMELLS ▸ force unwrap ▸ force cast ▸ force try ▸ number of function parameters

4. CODE SMELLS force_unwrapping // before navigationController!.pushViewController(loginVC, animated: true)

4. CODE SMELLS force_unwrapping // before navigationController!.pushViewController(loginVC, animated: true) // after guard let navController = navigationController else { return } navController.pushViewController(loginVC, animated: true)

Type of Rules 1. Stylistic Rules 2. Hygenic Rules 3. Convention Rules 4. Code Smells 5. Cyclomatic Complexity

5. CYCLOMATIC COMPLEXITY func complexFunction() { let i = 0 let array = [] if true { if i != 0 { if false {} } else { if !array.isEmpty && false { for element in array { guard i >= 0 && i < 42 else { return } if i >= 42 { switch i { case 42: break case 43: break case _ where i >= 44: print(i) default: break } } } } } } }

Type of Rules 1. Stylistic Rules 2. Hygenic Rules 3. Convention Rules 4. Code Smells 5. Cyclomatic Complexity

AND NOW Live Demo

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https://twitter.com/KrauseFx/status/1055812829234782208

fastlane3 is a tool for iOS and Android developers to automate tedious tasks 3 https://github.com/fastlane/fastlane

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WHY FASTLANE?

WHY FASTLANE? ▸ saves time

WHY FASTLANE? ▸ saves time ▸ open source

WHY FASTLANE? ▸ saves time ▸ open source ▸ easy setup

WHY FASTLANE? ▸ saves time ▸ open source ▸ easy setup ▸ integrate with CI systems

CONTINOUS INTEGRATION

How?

#1

INSTALLATION ▸ Using RubyGems sudo gem install fastlane -NV ▸ Using Homebrew brew cask install fastlane

#2

SET UP Fastfile

desc 'Runs all tests' lane :test do run_tests( device: 'iPhone X', scheme: 'Testing' ) end

#3

And then... fastlane test

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[22:22:32]: ▸ ✓ testSelectRowShouldSetCorrectSelectedSetting (0.001 seconds) [22:22:32]: ▸ Executed 32 tests, with 0 failures (0 unexpected) in 0.162 (0.182) seconds [22:22:33]: ▸ 2018-11-19 22:22:33.198 xcodebuild[53785:4181855] [MT] IDETestOperationsObserverDebug: 24.020 elapsed -- Testing started completed. [22:22:33]: ▸ 2018-11-19 22:22:33.198 xcodebuild[53785:4181855] [MT] IDETestOperationsObserverDebug: 0.000 sec, +0.000 sec -- start [22:22:33]: ▸ 2018-11-19 22:22:33.198 xcodebuild[53785:4181855] [MT] IDETestOperationsObserverDebug: 24.020 sec, +24.020 sec -- end [22:22:33]: ▸ Test Succeeded +--------------------+----+ | Test Results | +--------------------+----+ | Number of tests | 32 | | Number of failures | 0 | +--------------------+----+ +------+---------------------+-------------+ | fastlane summary | +------+---------------------+-------------+ | Step | Action | Time (in s) | +------+---------------------+-------------+ | 1 | Verifying fastlane | 0 | | | version | | | 2 | number_of_commits | 0 | | 3 | run_tests | 62 | +------+---------------------+-------------+ [22:22:39]: fastlane.tools finished successfully ! ✔ ~/develop/_private/cineaste-ios [master|⚑ 11] 22:22 $

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Without fastlane it would be xcodebuild \ -workspace Minions.xcworkspace \ -scheme "Testing" \ -sdk iphonesimulator \ -destination 'platform=iOS Simulator,name=iPhone X' \ test

AND NOW Live Demo

WHAT WE @ADORSYS USE FASTLANE FOR?

WHAT WE @ADORSYS USE FASTLANE FOR? ▸ run tests

WHAT WE @ADORSYS USE FASTLANE FOR? ▸ run tests ▸ build app

WHAT WE @ADORSYS USE FASTLANE FOR? ▸ run tests ▸ build app ▸ make screenshots

WHAT WE @ADORSYS USE FASTLANE FOR? ▸ run tests ▸ build app ▸ make screenshots ▸ upload app to Testflight, AppStore or adorsys AppCatalog

THANKS Questions?

Felizia Bernutz ▸ @fbernutz ▸ @felibe444 ▸ ! iOS dev @adorsys 28.11.2018 – TH Nürnberg