| // 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'); |
| |
| |
| function expect(expected) { |
| var actual = []; |
| process.on('exit', function() { |
| assert.deepEqual(actual.sort(), expected.sort()); |
| }); |
| function listener(name) { |
| actual.push(name) |
| } |
| return common.mustCall(listener, expected.length); |
| } |
| |
| function listener() {} |
| |
| var e1 = new events.EventEmitter(); |
| e1.on('foo', listener); |
| e1.on('bar', listener); |
| e1.on('baz', listener); |
| e1.on('baz', listener); |
| var fooListeners = e1.listeners('foo'); |
| var barListeners = e1.listeners('bar'); |
| var bazListeners = e1.listeners('baz'); |
| e1.on('removeListener', expect(['bar', 'baz', 'baz'])); |
| e1.removeAllListeners('bar'); |
| e1.removeAllListeners('baz'); |
| assert.deepEqual(e1.listeners('foo'), [listener]); |
| assert.deepEqual(e1.listeners('bar'), []); |
| assert.deepEqual(e1.listeners('baz'), []); |
| // after calling removeAllListeners, |
| // the old listeners array should stay unchanged |
| assert.deepEqual(fooListeners, [listener]); |
| assert.deepEqual(barListeners, [listener]); |
| assert.deepEqual(bazListeners, [listener, listener]); |
| // after calling removeAllListeners, |
| // new listeners arrays are different from the old |
| assert.notEqual(e1.listeners('bar'), barListeners); |
| assert.notEqual(e1.listeners('baz'), bazListeners); |
| |
| var e2 = new events.EventEmitter(); |
| e2.on('foo', listener); |
| e2.on('bar', listener); |
| // expect LIFO order |
| e2.on('removeListener', expect(['foo', 'bar', 'removeListener'])); |
| e2.on('removeListener', expect(['foo', 'bar'])); |
| e2.removeAllListeners(); |
| console.error(e2); |
| assert.deepEqual([], e2.listeners('foo')); |
| assert.deepEqual([], e2.listeners('bar')); |
| |
| var e3 = new events.EventEmitter(); |
| e3.on('removeListener', listener); |
| // check for regression where removeAllListeners throws when |
| // there exists a removeListener listener, but there exists |
| // no listeners for the provided event type |
| assert.doesNotThrow(e3.removeAllListeners.bind(e3, 'foo')); |