| // 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 e = new events.EventEmitter(); |
| var times_hello_emited = 0; |
| |
| e.once('hello', function(a, b) { |
| times_hello_emited++; |
| }); |
| |
| e.emit('hello', 'a', 'b'); |
| e.emit('hello', 'a', 'b'); |
| e.emit('hello', 'a', 'b'); |
| e.emit('hello', 'a', 'b'); |
| |
| var remove = function() { |
| assert.fail(1, 0, 'once->foo should not be emitted', '!'); |
| }; |
| |
| e.once('foo', remove); |
| e.removeListener('foo', remove); |
| e.emit('foo'); |
| |
| process.on('exit', function() { |
| assert.equal(1, times_hello_emited); |
| }); |
| |
| var times_recurse_emitted = 0; |
| |
| e.once('e', function() { |
| e.emit('e'); |
| times_recurse_emitted++; |
| }); |
| |
| e.once('e', function() { |
| times_recurse_emitted++; |
| }); |
| |
| e.emit('e'); |
| |
| process.on('exit', function() { |
| assert.equal(2, times_recurse_emitted); |
| }); |