node/test/parallel/test-event-emitter-set-max-listeners-side-effects.js

'use strict';
require('../common');
const assert = require('assert');
const events = require('events');

const e = new events.EventEmitter();

assert(!(e._events instanceof Object));
assert.deepStrictEqual(Object.keys(e._events), []);
e.setMaxListeners(5);
assert.deepStrictEqual(Object.keys(e._events), []);