tests-developer

name	tests-developer
description	Smart router to testing patterns and practices. Use when writing unit tests, creating mocks, testing edge cases, or working with Swift Testing and XCTest frameworks.

Tests Developer Skill

Smart router to testing patterns and practices. Writing unit tests, creating mocks, test organization.

When to Use This Skill

This skill activates when working with:

• Writing unit tests
• Creating test mocks
• Testing edge cases
• Test-driven development (TDD)
• Test refactoring and updates
• Swift Testing framework usage
• XCTest framework usage

Quick Reference

Critical Rules

• ✅ Use Swift Testing framework (import Testing, @Test, @Suite) for NEW tests
• ✅ Keep existing XCTest tests as-is (don't migrate unless necessary)
• ✅ Test edge cases: nil values, empty collections, boundary conditions
• ✅ Create mock helpers in test file extensions when needed
• ✅ Update tests when refactoring - always search and update references
• ❌ Never skip tests for data transformation or business logic
• ❌ Never use force unwrapping in tests - use proper assertions

Test File Naming

ProductionCode:  SetContentViewDataBuilder.swift
Test File:       SetContentViewDataBuilderTests.swift
Location:        AnyTypeTests/[Category]/[TestFile].swift

Swift Testing Framework (Preferred for New Tests)

Basic Structure:

import Testing
 Foundation
  Anytype
 Services


  {

      sut:   

    () {
        .sut  ()
    }

      () {
        
         input  

        
         result  sut.process(input)

        
        #expect(result  )
    }

      () {
         result  sut.process()
        #expect(result  )
    }
}