import { expect } from 'chai' import u from '../lib' describe('u.freeze', () => { afterEach(() => { delete process.env.NODE_ENV }) it('freezes objects', () => { const object = {} u.freeze(object) expect(Object.isFrozen(object)).to.be.true }) it('freezes nested objects', () => { const object = { foo: { bar: 3 } } u.freeze(object) expect(Object.isFrozen(object.foo)).to.be.true }) it('freezes nested arrays', () => { const object = [[0]] u.freeze(object) expect(Object.isFrozen(object)).to.be.true expect(Object.isFrozen(object[0])).to.be.true }) it('ignores functions', () => { const object = { foo: () => 1 } u.freeze(object) expect(Object.isFrozen(object.foo)).to.be.false }) it('ignores regexps', () => { const object = { foo: /\d/ } u.freeze(object) expect(Object.isFrozen(object.foo)).to.be.false }) it('does not freeze children if the parent is already frozen', () => { const object = { foo: {} } Object.freeze(object) u.freeze(object) expect(Object.isFrozen(object.foo)).to.be.false }) if (typeof process !== 'undefined') { it('does not freeze in production', () => { process.env.NODE_ENV = 'production' const object = {} u.freeze(object) expect(Object.isFrozen(object)).to.be.false }) } it('handles null objects', () => { const object = { foo: null } u.freeze(object) expect(Object.isFrozen(object)).to.be.true }) it('returns the same object', () => { const object = {} const result = u.freeze(object) expect(result).to.equal(object) }) })