| // Flags: --expose-internals |
| 'use strict'; |
| |
| require('../common'); |
| const { internalBinding } = require('internal/test/binding'); |
| const constants = internalBinding('constants'); |
| const assert = require('assert'); |
| |
| assert.deepStrictEqual( |
| Object.keys(constants).sort(), ['crypto', 'fs', 'os', 'trace', 'zlib'] |
| ); |
| |
| assert.deepStrictEqual( |
| Object.keys(constants.os).sort(), ['UV_UDP_REUSEADDR', 'dlopen', 'errno', |
| 'priority', 'signals'] |
| ); |
| |
| // Make sure all the constants objects don't inherit from Object.prototype |
| const inheritedProperties = Object.getOwnPropertyNames(Object.prototype); |
| function test(obj) { |
| assert(obj); |
| assert.strictEqual(Object.prototype.toString.call(obj), '[object Object]'); |
| assert.strictEqual(Object.getPrototypeOf(obj), null); |
| |
| inheritedProperties.forEach((property) => { |
| assert.strictEqual(property in obj, false); |
| }); |
| } |
| |
| [ |
| constants, constants.crypto, constants.fs, constants.os, constants.trace, |
| constants.zlib, constants.os.dlopen, constants.os.errno, constants.os.signals |
| ].forEach(test); |