| // 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. |
| |
| var common = require('../common'); |
| var assert = require('assert'); |
| var events = require('events'); |
| |
| var count = 0; |
| |
| function listener1() { |
| console.log('listener1'); |
| count++; |
| } |
| |
| function listener2() { |
| console.log('listener2'); |
| count++; |
| } |
| |
| function listener3() { |
| console.log('listener3'); |
| count++; |
| } |
| |
| function remove1() { |
| assert(0); |
| } |
| |
| function remove2() { |
| assert(0); |
| } |
| |
| var e1 = new events.EventEmitter(); |
| e1.on('hello', listener1); |
| e1.on('removeListener', common.mustCall(function(name, cb) { |
| assert.equal(name, 'hello'); |
| assert.equal(cb, listener1); |
| })); |
| e1.removeListener('hello', listener1); |
| assert.deepEqual([], e1.listeners('hello')); |
| |
| var e2 = new events.EventEmitter(); |
| e2.on('hello', listener1); |
| e2.on('removeListener', assert.fail); |
| e2.removeListener('hello', listener2); |
| assert.deepEqual([listener1], e2.listeners('hello')); |
| |
| var e3 = new events.EventEmitter(); |
| e3.on('hello', listener1); |
| e3.on('hello', listener2); |
| e3.on('removeListener', common.mustCall(function(name, cb) { |
| assert.equal(name, 'hello'); |
| assert.equal(cb, listener1); |
| })); |
| e3.removeListener('hello', listener1); |
| assert.deepEqual([listener2], e3.listeners('hello')); |
| |
| var e4 = new events.EventEmitter(); |
| e4.on('removeListener', common.mustCall(function(name, cb) { |
| if (cb !== remove1) return; |
| this.removeListener('quux', remove2); |
| this.emit('quux'); |
| }, 2)); |
| e4.on('quux', remove1); |
| e4.on('quux', remove2); |
| e4.removeListener('quux', remove1); |