mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.8 KiB
86 lines
2.8 KiB
// 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 util = require('util');
|
|
|
|
function listener() {}
|
|
function listener2() {}
|
|
class TestStream { constructor() { } }
|
|
util.inherits(TestStream, events.EventEmitter);
|
|
|
|
{
|
|
const ee = new events.EventEmitter();
|
|
ee.on('foo', listener);
|
|
const fooListeners = ee.listeners('foo');
|
|
assert.deepStrictEqual(ee.listeners('foo'), [listener]);
|
|
ee.removeAllListeners('foo');
|
|
assert.deepStrictEqual(ee.listeners('foo'), []);
|
|
assert.deepStrictEqual(fooListeners, [listener]);
|
|
}
|
|
|
|
{
|
|
const ee = new events.EventEmitter();
|
|
ee.on('foo', listener);
|
|
const eeListenersCopy = ee.listeners('foo');
|
|
assert.deepStrictEqual(eeListenersCopy, [listener]);
|
|
assert.deepStrictEqual(ee.listeners('foo'), [listener]);
|
|
eeListenersCopy.push(listener2);
|
|
assert.deepStrictEqual(ee.listeners('foo'), [listener]);
|
|
assert.deepStrictEqual(eeListenersCopy, [listener, listener2]);
|
|
}
|
|
|
|
{
|
|
const ee = new events.EventEmitter();
|
|
ee.on('foo', listener);
|
|
const eeListenersCopy = ee.listeners('foo');
|
|
ee.on('foo', listener2);
|
|
assert.deepStrictEqual(ee.listeners('foo'), [listener, listener2]);
|
|
assert.deepStrictEqual(eeListenersCopy, [listener]);
|
|
}
|
|
|
|
{
|
|
const ee = new events.EventEmitter();
|
|
ee.once('foo', listener);
|
|
assert.deepStrictEqual(ee.listeners('foo'), [listener]);
|
|
}
|
|
|
|
{
|
|
const ee = new events.EventEmitter();
|
|
ee.on('foo', listener);
|
|
ee.once('foo', listener2);
|
|
assert.deepStrictEqual(ee.listeners('foo'), [listener, listener2]);
|
|
}
|
|
|
|
{
|
|
const ee = new events.EventEmitter();
|
|
ee._events = undefined;
|
|
assert.deepStrictEqual(ee.listeners('foo'), []);
|
|
}
|
|
|
|
{
|
|
const s = new TestStream();
|
|
assert.deepStrictEqual(s.listeners('foo'), []);
|
|
}
|
|
|