✅Testing System

附錄 ⟩ Testing System

• XCTest：Swift 和 Objective-C 專案中常用的單元測試框架。

• Swift Testing：現代化測試框架，Swift Package Manager 推薦選項。

💡 Xcode ⟩ Product ⟩ Test (command + U) 可以執行所有測試 (Unit Tests)

🗺️ 圖表

Xcode ⟩ File ⟩ New ⟩ Package ... ⟩ framework ⟩ Libray ⟩ Testing System

⭐️ 重點

If you choose to add tests to your project, Xcode will create two additional targets: one for unit tests and one for UI tests.

structure for a test case:

• Arrange: arrange the "system under test" (SUT) and the "inputs".

• Act: act on the SUT to get the "output".

• Assert: assert the "output" matches the "expected result".

func testEmptyMenuReturnsEmptySections() {
    
    // ⭐️ Arrange: (arrange inputs)
    let menu = [MenuItem]() 
    
    // ⭐️ Act: (generate output)
    let sections = menu.groupedByCategory()
    
    // ⭐️ Assert: (assert match)
    XCTAssertTrue(sections.isEmpty)
}

📙 書籍

• Test-Driven Development in Swift (2021)

• Test-Driven iOS Development with Swift - Fourth Edition

📗 參考

• KHAWER ⟩ Unit Testing and UI Testing in Swift