deno.land / std@0.166.0 / node / _tools / test / parallel / test-event-emitter-max-listeners.js

test-event-emitter-max-listeners.js
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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 16.13.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
// 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 { inspect } = require('util');const e = new events.EventEmitter();
e.on('maxListeners', common.mustCall());
// Should not corrupt the 'maxListeners' queue.e.setMaxListeners(42);
const throwsObjs = [NaN, -1, 'and even this'];
for (const obj of throwsObjs) { assert.throws( () => e.setMaxListeners(obj), { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "n" is out of range. ' + `It must be a non-negative number. Received ${inspect(obj)}` } );
assert.throws( () => events.defaultMaxListeners = obj, { code: 'ERR_OUT_OF_RANGE', name: 'RangeError', message: 'The value of "defaultMaxListeners" is out of range. ' + `It must be a non-negative number. Received ${inspect(obj)}` } );}
e.emit('maxListeners');
{ const { EventEmitter, defaultMaxListeners } = events; for (const obj of throwsObjs) { assert.throws(() => EventEmitter.setMaxListeners(obj), { code: 'ERR_OUT_OF_RANGE', }); }
// FIXME(bartlomieju): // assert.throws( // () => EventEmitter.setMaxListeners(defaultMaxListeners, 'INVALID_EMITTER'), // { code: 'ERR_INVALID_ARG_TYPE' } // );}
std

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Tagged at
a year ago