Swift Testing Expert (Project-Specific)

Testing expertise tailored for the iOS/macOS apps in this monorepo.

Project Test Structure

ProjectName/
├── ProjectName/           # Source files
├── ProjectNameTests/      # Unit tests
└── ProjectNameUITests/    # UI tests (if applicable)

Test Conventions

File Naming

• Test file: [SourceFile]Tests.swift
• Example: GameScene.swift → GameSceneTests.swift

Test Function Naming

swift
1func test_[unit]_[scenario]_[expectedResult]()
2// Example:
3func test_scoreManager_addPoints_incrementsScore()

Standard Patterns

swift
1import XCTest
2@testable import ProjectName
3
4final class ComponentTests: XCTestCase {
5    var sut: Component!  // System Under Test
6
7    override func setUp() {
8        super.setUp()
9        sut = Component()
10    }
11
12    override func tearDown() {
13        sut = nil
14        super.tearDown()
15    }
16
17    func test_method_condition_expectedResult() {
18        // Arrange
19
20        // Act
21
22        // Assert
23    }
24}

Async Testing

swift
1func test_asyncMethod_succeeds() async throws {
2    let result = try await sut.fetchData()
3    XCTAssertNotNil(result)
4}

Memory Safety

swift
1// Use [weak self] in closures
2Task { [weak self] in
3    guard let self else { return }
4    await self.performWork()
5}

Running Tests

bash
1# Via Xcode
2Cmd+U  # Run all tests
3
4# Via command line
5xcodebuild test -scheme ProjectName -destination 'platform=iOS Simulator,name=iPhone 16'