mirror of
https://github.com/nodejs/node.git
synced 2024-11-21 21:19:50 +01:00
508890d795
PR-URL: https://github.com/nodejs/node/pull/39928 Reviewed-By: Tobias Nießen <tniessen@tnie.de> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
48 lines
1.3 KiB
JavaScript
48 lines
1.3 KiB
JavaScript
/* eslint-disable node-core/require-common-first, node-core/required-modules */
|
|
|
|
'use strict';
|
|
|
|
// Ordinarily test files must require('common') but that action causes
|
|
// the global console to be compiled, defeating the purpose of this test.
|
|
|
|
const assert = require('assert');
|
|
const EventEmitter = require('events');
|
|
const leakWarning = /EventEmitter memory leak detected\. 2 hello listeners/;
|
|
|
|
let writeTimes = 0;
|
|
let warningTimes = 0;
|
|
process.on('warning', () => {
|
|
// This will be called after the default internal
|
|
// process warning handler is called. The default
|
|
// process warning writes to the console, which will
|
|
// invoke the monkeypatched process.stderr.write
|
|
// below.
|
|
assert.strictEqual(writeTimes, 1);
|
|
EventEmitter.defaultMaxListeners = oldDefault;
|
|
warningTimes++;
|
|
});
|
|
|
|
process.on('exit', () => {
|
|
assert.strictEqual(warningTimes, 1);
|
|
});
|
|
|
|
process.stderr.write = (data) => {
|
|
if (writeTimes === 0)
|
|
assert.match(data, leakWarning);
|
|
else
|
|
assert.fail('stderr.write should be called only once');
|
|
|
|
writeTimes++;
|
|
};
|
|
|
|
const oldDefault = EventEmitter.defaultMaxListeners;
|
|
EventEmitter.defaultMaxListeners = 1;
|
|
|
|
const e = new EventEmitter();
|
|
e.on('hello', () => {});
|
|
e.on('hello', () => {});
|
|
|
|
// TODO: Figure out how to validate console. Currently,
|
|
// there is no obvious way of validating that console
|
|
// exists here exactly when it should.
|