node/test/parallel/test-event-emitter-max-listeners.js
Deokjin Kim cc18fd9608
events: refactor to use validateNumber
Need to use validateNumber for checking `TypeError`

PR-URL: https://github.com/nodejs/node/pull/45770
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
2023-01-22 06:50:37 +00:00

89 lines
2.5 KiB
JavaScript

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const common = require('../common');
const assert = require('assert');
const events = require('events');
const e = new events.EventEmitter();
e.on('maxListeners', common.mustCall());
// Should not corrupt the 'maxListeners' queue.
e.setMaxListeners(42);
const rangeErrorObjs = [NaN, -1];
const typeErrorObj = 'and even this';
for (const obj of rangeErrorObjs) {
assert.throws(
() => e.setMaxListeners(obj),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
}
);
assert.throws(
() => events.defaultMaxListeners = obj,
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
}
);
}
assert.throws(
() => e.setMaxListeners(typeErrorObj),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
}
);
assert.throws(
() => events.defaultMaxListeners = typeErrorObj,
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
}
);
e.emit('maxListeners');
{
const { EventEmitter, defaultMaxListeners } = events;
for (const obj of rangeErrorObjs) {
assert.throws(() => EventEmitter.setMaxListeners(obj), {
code: 'ERR_OUT_OF_RANGE',
});
}
assert.throws(() => EventEmitter.setMaxListeners(typeErrorObj), {
code: 'ERR_INVALID_ARG_TYPE',
});
assert.throws(
() => EventEmitter.setMaxListeners(defaultMaxListeners, 'INVALID_EMITTER'),
{ code: 'ERR_INVALID_ARG_TYPE' }
);
}