test-generator

# Test Generation ## Structure (AAA Pattern) ```typescript it('should [expected] when [condition]', () => { // Arrange — set up data // Act — perform operation // Assert — verify outcome }); ``` ## Test Categories | Category | Test For | |----------|----------| | Happy path | Valid input → expected output | | Edge cases | Empty, null, boundary values | | Error cases | Invalid input, failures | | Side effects | State changes, calls made | | Async | Resolve/reject paths | ## Naming Pattern: `should [behavior] when [condition]` ## Organization - Group with `describe` by function/method - Reset state in `beforeEach` - One concept per test ## Anti-Patterns | Don't | Do | |-------|------| | Test implementation | Test behavior | | Share mutable state | Reset in beforeEach | | Many assertions per test | One concept per test | | Test private methods | Test through public API | | Snapshot overuse | Assert specific values |