iOS Unit Testing

Digital Day BH 2016

Github: https://github.com/marciliojrs/DigitalDayBH2016

Transcript

1. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com iOS unit Testing
2. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com who am i iOS Lead @ HE:labs iOS Instructor @ Framework Training Center Professor @ PUC Minas CocoaHeads BH Co-organizer Marcílio Júnior
3. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com unit Testing WHY?
4. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com
5. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com Why test • Avoid break your codebase • It’s a way to document your code • Make development faster • Reduce your fear • Improve your code quality
6. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com what to test • If possible, everything
7. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com TYPEs of unit tests
8. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com unit test types • Mathematical • Pure functions • Delegation • Output
9. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com unit test types • Mathematical • Delegation • Propagation • Output
10. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com unit test types • Mathematical • Delegation • Output • More than one input/output
11. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com (B/T)DD
12. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com (B/T)DD • Test-Driven Development • Behaviour-Driven Development
13. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com (B/T)DD • Test-Driven Development • Behaviour-Driven Development let counter = Counter() let expectedCount = 1 counter.tick() XCTAssertEqual(counter.count, expectedCount)
14. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com (B/T)DD • Test-Driven Development • Behaviour-Driven Development describe("Counter") { var counter: Counter! beforeEach { counter = Counter() } it("should increase count by 1 after calling tick") { let expectedCount = counter.count + 1 counter.tick() expect(counter.count).to(be(expectedCount)) } }
15. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com TESTING frameworks • XCTest • Quick
16. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com TESTING frameworks • XCTest • default testing framework of Xcode • Quick
17. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com TESTING frameworks • XCTest • Quick • BDD testing framework
18. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com quick • https://github.com/Quick/Quick • Inspired by RSpec, Specta e Ginkgo • Swift & Objective-C support • It comes with a great matcher framework: Nimble
19. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com quick • BDD DSL • describe • context • it • beforeEach • afterEach
20. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com testable imports • @testable import • allows use your internal classes in unit test target • don’t need to set the unit test target to all your classes
21. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com live coding
22. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com one more thing...
23. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com tips • Dependency injection • Testable architectures • Mocks & Stubs • Code Coverage
24. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com QUestions?
25. DIGITAL DAY - SEP 3, 2016 MARCÍLIO JÚNIOR marciliojrs@gmail.com thanks! @marciliojrs /in/marciliojunior marciliojrs@gmail.com @marcilio iOSDevBR @marciliojrs