/test-generator

name: test-generator
description: Generates test cases for functions and components. Use when writing tests or creating test suites.
version: 1.0.0
format: 2025-10-02
triggers:
  - writing tests or creating test suites
updated: 2026-04-25
status: ACTIVE

Test Generation

Structure (AAA Pattern)

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 |