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common.js needs to be loaded in all tests so that there is checking for variable leaks and possibly other things. However, it does not need to be assigned to a variable if nothing in common.js is referred to elsewhere in the test. PR-URL: https://github.com/nodejs/node/pull/4408 Reviewed-By: James M Snell <jasnell@gmail.com>
69 lines
1.8 KiB
JavaScript
69 lines
1.8 KiB
JavaScript
'use strict';
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require('../common');
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var assert = require('assert');
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var events = require('events');
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var e = new events.EventEmitter();
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var events_new_listener_emited = [];
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var listeners_new_listener_emited = [];
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var times_hello_emited = 0;
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// sanity check
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assert.equal(e.addListener, e.on);
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e.on('newListener', function(event, listener) {
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if (event === 'newListener')
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return; // Don't track our adding of newListener listeners.
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console.log('newListener: ' + event);
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events_new_listener_emited.push(event);
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listeners_new_listener_emited.push(listener);
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});
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function hello(a, b) {
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console.log('hello');
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times_hello_emited += 1;
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assert.equal('a', a);
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assert.equal('b', b);
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}
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e.once('newListener', function(name, listener) {
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assert.equal(name, 'hello');
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assert.equal(listener, hello);
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assert.deepEqual(this.listeners('hello'), []);
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});
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e.on('hello', hello);
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var foo = function() {};
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e.once('foo', foo);
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console.log('start');
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e.emit('hello', 'a', 'b');
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// just make sure that this doesn't throw:
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var f = new events.EventEmitter();
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f.setMaxListeners(0);
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process.on('exit', function() {
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assert.deepEqual(['hello', 'foo'], events_new_listener_emited);
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assert.deepEqual([hello, foo], listeners_new_listener_emited);
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assert.equal(1, times_hello_emited);
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});
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var listen1 = function listen1() {};
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var listen2 = function listen2() {};
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var e1 = new events.EventEmitter();
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e1.once('newListener', function() {
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assert.deepEqual(e1.listeners('hello'), []);
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e1.once('newListener', function() {
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assert.deepEqual(e1.listeners('hello'), []);
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});
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e1.on('hello', listen2);
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});
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e1.on('hello', listen1);
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// The order of listeners on an event is not always the order in which the
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// listeners were added.
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assert.deepEqual(e1.listeners('hello'), [listen2, listen1]);
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