| // 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. |
| |
| require('./common'); |
| var assert = require('assert'); |
| var events = require('../'); |
| |
| var callbacks_called = []; |
| |
| var e = new events.EventEmitter(); |
| |
| function callback1() { |
| callbacks_called.push('callback1'); |
| e.on('foo', callback2); |
| e.on('foo', callback3); |
| e.removeListener('foo', callback1); |
| } |
| |
| function callback2() { |
| callbacks_called.push('callback2'); |
| e.removeListener('foo', callback2); |
| } |
| |
| function callback3() { |
| callbacks_called.push('callback3'); |
| e.removeListener('foo', callback3); |
| } |
| |
| e.on('foo', callback1); |
| assert.strictEqual(e.listeners('foo').length, 1); |
| |
| e.emit('foo'); |
| assert.strictEqual(e.listeners('foo').length, 2); |
| assert.ok(Array.isArray(callbacks_called)); |
| assert.strictEqual(callbacks_called.length, 1); |
| assert.strictEqual(callbacks_called[0], 'callback1'); |
| |
| e.emit('foo'); |
| assert.strictEqual(e.listeners('foo').length, 0); |
| assert.ok(Array.isArray(callbacks_called)); |
| assert.strictEqual(callbacks_called.length, 3); |
| assert.strictEqual(callbacks_called[0], 'callback1'); |
| assert.strictEqual(callbacks_called[1], 'callback2'); |
| assert.strictEqual(callbacks_called[2], 'callback3'); |
| |
| e.emit('foo'); |
| assert.strictEqual(e.listeners('foo').length, 0); |
| assert.ok(Array.isArray(callbacks_called)); |
| assert.strictEqual(callbacks_called.length, 3); |
| assert.strictEqual(callbacks_called[0], 'callback1'); |
| assert.strictEqual(callbacks_called[1], 'callback2'); |
| assert.strictEqual(callbacks_called[2], 'callback3'); |
| |
| e.on('foo', callback1); |
| e.on('foo', callback2); |
| assert.strictEqual(e.listeners('foo').length, 2); |
| e.removeAllListeners('foo'); |
| assert.strictEqual(e.listeners('foo').length, 0); |
| |
| // Verify that removing callbacks while in emit allows emits to propagate to |
| // all listeners |
| callbacks_called = []; |
| |
| e.on('foo', callback2); |
| e.on('foo', callback3); |
| assert.strictEqual(2, e.listeners('foo').length); |
| e.emit('foo'); |
| assert.ok(Array.isArray(callbacks_called)); |
| assert.strictEqual(callbacks_called.length, 2); |
| assert.strictEqual(callbacks_called[0], 'callback2'); |
| assert.strictEqual(callbacks_called[1], 'callback3'); |
| assert.strictEqual(0, e.listeners('foo').length); |