node/test/parallel/test-event-emitter-listeners-side-effects.js
Rich Trott 06c29a66d4 test: remove common.fail()
common.fail() was added to paste over issues with assert.fail() function
signature. assert.fail() has been updated to accept a single argument so
common.fail() is no longer necessary.

PR-URL: https://github.com/nodejs/node/pull/12293
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2017-04-12 14:25:33 -07:00

61 lines
2.1 KiB
JavaScript

// 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 EventEmitter = require('events').EventEmitter;
const e = new EventEmitter();
let fl; // foo listeners
fl = e.listeners('foo');
assert(Array.isArray(fl));
assert.strictEqual(fl.length, 0);
assert(!(e._events instanceof Object));
assert.deepStrictEqual(Object.keys(e._events), []);
e.on('foo', assert.fail);
fl = e.listeners('foo');
assert.strictEqual(e._events.foo, assert.fail);
assert(Array.isArray(fl));
assert.strictEqual(fl.length, 1);
assert.strictEqual(fl[0], assert.fail);
e.listeners('bar');
e.on('foo', assert.ok);
fl = e.listeners('foo');
assert(Array.isArray(e._events.foo));
assert.strictEqual(e._events.foo.length, 2);
assert.strictEqual(e._events.foo[0], assert.fail);
assert.strictEqual(e._events.foo[1], assert.ok);
assert(Array.isArray(fl));
assert.strictEqual(fl.length, 2);
assert.strictEqual(fl[0], assert.fail);
assert.strictEqual(fl[1], assert.ok);
console.log('ok');