node/test/parallel/test-global-console-exists.js
Dave f9a59c1d3b events: make sure console functions exist
If there's no global console cached, initialize it.

Fixes: https://github.com/nodejs/node/issues/4467
PR-URL: https://github.com/nodejs/node/pull/4479
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
2016-01-14 18:20:25 -08:00

36 lines
1 KiB
JavaScript

/* eslint-disable required-modules */
// ordinarily test files must require('common') but that action causes
// the global console to be compiled, defeating the purpose of this test
'use strict';
const assert = require('assert');
const EventEmitter = require('events');
const leak_warning = /EventEmitter memory leak detected\. 2 hello listeners/;
var write_calls = 0;
process.stderr.write = function(data) {
if (write_calls === 0)
assert.ok(data.match(leak_warning));
else if (write_calls === 1)
assert.ok(data.match(/Trace/));
else
assert.ok(false, 'stderr.write should be called only twice');
write_calls++;
};
const old_default = EventEmitter.defaultMaxListeners;
EventEmitter.defaultMaxListeners = 1;
const e = new EventEmitter();
e.on('hello', function() {});
e.on('hello', function() {});
// TODO: figure out how to validate console. Currently,
// there is no obvious way of validating that console
// exists here exactly when it should.
assert.equal(write_calls, 2);
EventEmitter.defaultMaxListeners = old_default;