a5c-ai Jest Skill
Expert assistance for testing with Jest.
Capabilities
- Configure Jest for various frameworks
- Implement mocking strategies
- Write snapshot tests
- Configure coverage
- Handle async testing
Test Patterns
describe('UserService', () => {
let service: UserService;
let mockRepository: jest.Mocked<UserRepository>;
beforeEach(() => {
mockRepository = {
findAll: jest.fn(),
findById: jest.fn(),
create: jest.fn(),
};
service = new UserService(mockRepository);
});
it('should return all users', async () => {
mockRepository.findAll.mockResolvedValue([{ id: '1', name: 'John' }]);
const result = await service.findAll();
expect(result).toHaveLength(1);
expect(mockRepository.findAll).toHaveBeenCalled();
});
});
Target Processes
- unit-testing
- integration-testing
- tdd-development