mirror of https://gitee.com/openkylin/nodejs.git
61 lines
2.1 KiB
JavaScript
61 lines
2.1 KiB
JavaScript
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// 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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require('../common');
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const assert = require('assert');
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const EventEmitter = require('events').EventEmitter;
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const e = new EventEmitter();
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let fl; // foo listeners
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fl = e.listeners('foo');
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assert(Array.isArray(fl));
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assert.strictEqual(fl.length, 0);
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assert(!(e._events instanceof Object));
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assert.deepStrictEqual(Object.keys(e._events), []);
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e.on('foo', assert.fail);
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fl = e.listeners('foo');
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assert.strictEqual(e._events.foo, assert.fail);
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assert(Array.isArray(fl));
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assert.strictEqual(fl.length, 1);
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assert.strictEqual(fl[0], assert.fail);
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e.listeners('bar');
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e.on('foo', assert.ok);
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fl = e.listeners('foo');
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assert(Array.isArray(e._events.foo));
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assert.strictEqual(e._events.foo.length, 2);
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assert.strictEqual(e._events.foo[0], assert.fail);
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assert.strictEqual(e._events.foo[1], assert.ok);
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assert(Array.isArray(fl));
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assert.strictEqual(fl.length, 2);
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assert.strictEqual(fl[0], assert.fail);
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assert.strictEqual(fl[1], assert.ok);
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console.log('ok');
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