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nodejs/test/parallel/test-binding-constants.js
Rich Trott 330f25ef82 test: prepare for consistent comma-dangle lint rule
Make changes so that tests will pass when the comma-dangle settings
applied to the rest of the code base are also applied to tests.

PR-URL: https://github.com/nodejs/node/pull/37930
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Derek Lewis <DerekNonGeneric@inf.is>
2021-04-01 23:14:29 -07:00

34 lines
1.0 KiB
JavaScript

// 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);