text: 
  // 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 assert = require('assert');
  var EventEmitter = require('../');
  
  function listener() {}
  function listener2() {}
  
  var e1 = new EventEmitter();
  e1.on('foo', listener);
  var fooListeners = e1.listeners('foo');
  assert.deepEqual(e1.listeners('foo'), [listener]);
  e1.removeAllListeners('foo');
  assert.deepEqual(e1.listeners('foo'), []);
  assert.deepEqual(fooListeners, [listener]);
  
  var e2 = new EventEmitter();
  e2.on('foo', listener);
  var e2ListenersCopy = e2.listeners('foo');
  assert.deepEqual(e2ListenersCopy, [listener]);
  assert.deepEqual(e2.listeners('foo'), [listener]);
  e2ListenersCopy.push(listener2);
  assert.deepEqual(e2.listeners('foo'), [listener]);
  assert.deepEqual(e2ListenersCopy, [listener, listener2]);
  
  var e3 = new EventEmitter();
  e3.on('foo', listener);
  var e3ListenersCopy = e3.listeners('foo');
  e3.on('foo', listener2);
  assert.deepEqual(e3.listeners('foo'), [listener, listener2]);
  assert.deepEqual(e3ListenersCopy, [listener]);
  