/** * Copyright (c) 2013-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @format * @emails oncall+jsinfra */ 'use strict'; describe('Object (ES7)', () => { beforeEach(() => { delete Object.entries; delete Object.values; jest.resetModules(); require('../Object.es7'); }); describe('Object.entries', () => { it('should have a length of 1', () => { expect(Object.entries.length).toBe(1); }); it('should check for type', () => { expect(Object.entries.bind(null, null)).toThrow( TypeError('Object.entries called on non-object'), ); expect(Object.entries.bind(null, undefined)).toThrow( TypeError('Object.entries called on non-object'), ); expect(Object.entries.bind(null, [])).not.toThrow(); expect(Object.entries.bind(null, () => {})).not.toThrow(); expect(Object.entries.bind(null, {})).not.toThrow(); expect(Object.entries.bind(null, 'abc')).not.toThrow(); }); it('should return enumerable entries', () => { const foo = Object.defineProperties( {}, { x: {value: 10, enumerable: true}, y: {value: 20}, }, ); expect(Object.entries(foo)).toEqual([['x', 10]]); const bar = {x: 10, y: 20}; expect(Object.entries(bar)).toEqual([['x', 10], ['y', 20]]); }); it('should work with proto-less objects', () => { const foo = Object.create(null, { x: {value: 10, enumerable: true}, y: {value: 20}, }); expect(Object.entries(foo)).toEqual([['x', 10]]); }); it('should return only own entries', () => { const foo = Object.create( {z: 30}, { x: {value: 10, enumerable: true}, y: {value: 20}, }, ); expect(Object.entries(foo)).toEqual([['x', 10]]); }); it('should convert to object primitive string', () => { expect(Object.entries('ab')).toEqual([['0', 'a'], ['1', 'b']]); }); }); describe('Object.values', () => { it('should have a length of 1', () => { expect(Object.values.length).toBe(1); }); it('should check for type', () => { expect(Object.values.bind(null, null)).toThrow( TypeError('Object.values called on non-object'), ); expect(Object.values.bind(null, [])).not.toThrow(); expect(Object.values.bind(null, () => {})).not.toThrow(); expect(Object.values.bind(null, {})).not.toThrow(); }); it('should return enumerable values', () => { const foo = Object.defineProperties( {}, { x: {value: 10, enumerable: true}, y: {value: 20}, }, ); expect(Object.values(foo)).toEqual([10]); const bar = {x: 10, y: 20}; expect(Object.values(bar)).toEqual([10, 20]); }); it('should work with proto-less objects', () => { const foo = Object.create(null, { x: {value: 10, enumerable: true}, y: {value: 20}, }); expect(Object.values(foo)).toEqual([10]); }); it('should return only own values', () => { const foo = Object.create( {z: 30}, { x: {value: 10, enumerable: true}, y: {value: 20}, }, ); expect(Object.values(foo)).toEqual([10]); }); it('should convert to object primitive string', () => { expect(Object.values('ab')).toEqual(['a', 'b']); }); }); });