xref: /third_party/node/test/parallel/test-event-emitter-method-names.js (revision 1cb0ef41)

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';
require('../common');
const assert = require('assert');
const events = require('events');

const E = events.EventEmitter.prototype;
assert.strictEqual(E.constructor.name, 'EventEmitter');
assert.strictEqual(E.on, E.addListener);  // Same method.
assert.strictEqual(E.off, E.removeListener);  // Same method.
Object.getOwnPropertyNames(E).forEach(function(name) {
  if (name === 'constructor' || name === 'on' || name === 'off') return;
  if (typeof E[name] !== 'function') return;
  assert.strictEqual(E[name].name, name);
});