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/* 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 common = require('../common');
const assert = require('assert');
const EventEmitter = require('events');
const leak_warning = /EventEmitter memory leak detected\. 2 hello listeners/;
let write_calls = 0;
process.on('warning', (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(write_calls, 1);
EventEmitter.defaultMaxListeners = old_default;
// when we get here, we should be done
});
process.stderr.write = (data) => {
if (write_calls === 0)
assert.ok(data.match(leak_warning));
else
common.fail('stderr.write should be called only once');
write_calls++;
};
const old_default = 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.
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