mirror of
https://github.com/nodejs/node.git
synced 2024-11-30 07:27:22 +01:00
50 lines
1.7 KiB
JavaScript
50 lines
1.7 KiB
JavaScript
// 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);
|
|
});
|
|
|