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4f2e372716
Export a new common.noop no-operation function for general use. Allow using common.mustCall() without a fn argument to simplify test cases. Replace various non-op functions throughout tests with common.noop PR-URL: https://github.com/nodejs/node/pull/12027 Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Teddy Katz <teddy.katz@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
98 lines
3.2 KiB
JavaScript
98 lines
3.2 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const events = require('events');
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let e = new events.EventEmitter();
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// default
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for (let i = 0; i < 10; i++) {
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e.on('default', common.noop);
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}
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assert.ok(!e._events['default'].hasOwnProperty('warned'));
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e.on('default', common.noop);
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assert.ok(e._events['default'].warned);
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// symbol
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const symbol = Symbol('symbol');
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e.setMaxListeners(1);
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e.on(symbol, common.noop);
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assert.ok(!e._events[symbol].hasOwnProperty('warned'));
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e.on(symbol, common.noop);
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assert.ok(e._events[symbol].hasOwnProperty('warned'));
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// specific
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e.setMaxListeners(5);
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for (let i = 0; i < 5; i++) {
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e.on('specific', common.noop);
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}
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assert.ok(!e._events['specific'].hasOwnProperty('warned'));
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e.on('specific', common.noop);
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assert.ok(e._events['specific'].warned);
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// only one
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e.setMaxListeners(1);
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e.on('only one', common.noop);
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assert.ok(!e._events['only one'].hasOwnProperty('warned'));
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e.on('only one', common.noop);
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assert.ok(e._events['only one'].hasOwnProperty('warned'));
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// unlimited
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e.setMaxListeners(0);
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for (let i = 0; i < 1000; i++) {
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e.on('unlimited', common.noop);
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}
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assert.ok(!e._events['unlimited'].hasOwnProperty('warned'));
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// process-wide
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events.EventEmitter.defaultMaxListeners = 42;
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e = new events.EventEmitter();
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for (let i = 0; i < 42; ++i) {
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e.on('fortytwo', common.noop);
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}
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assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
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e.on('fortytwo', common.noop);
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assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
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delete e._events['fortytwo'].warned;
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events.EventEmitter.defaultMaxListeners = 44;
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e.on('fortytwo', common.noop);
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assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
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e.on('fortytwo', common.noop);
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assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
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// but _maxListeners still has precedence over defaultMaxListeners
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events.EventEmitter.defaultMaxListeners = 42;
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e = new events.EventEmitter();
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e.setMaxListeners(1);
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e.on('uno', common.noop);
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assert.ok(!e._events['uno'].hasOwnProperty('warned'));
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e.on('uno', common.noop);
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assert.ok(e._events['uno'].hasOwnProperty('warned'));
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// chainable
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assert.strictEqual(e, e.setMaxListeners(1));
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