const { DuplicateContactException } = require('../CustomErrors'); describe('DuplicateContactException', () => { it('returns correct exception', () => { const exception = new DuplicateContactException({ id: 1, name: 'contact-name', email: 'email@example.com', }); expect(exception.message).toEqual('DUPLICATE_CONTACT'); expect(exception.data).toEqual({ id: 1, name: 'contact-name', email: 'email@example.com', }); }); });