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80 lines
3.0 KiB
80 lines
3.0 KiB
// 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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var common = require('../common');
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var assert = require('assert');
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var events = require('events');
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function expect(expected) {
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var actual = [];
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process.on('exit', function() {
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assert.deepEqual(actual.sort(), expected.sort());
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});
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function listener(name) {
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actual.push(name)
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}
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return common.mustCall(listener, expected.length);
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}
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function listener() {}
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var e1 = new events.EventEmitter();
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e1.on('foo', listener);
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e1.on('bar', listener);
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e1.on('baz', listener);
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e1.on('baz', listener);
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var fooListeners = e1.listeners('foo');
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var barListeners = e1.listeners('bar');
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var bazListeners = e1.listeners('baz');
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e1.on('removeListener', expect(['bar', 'baz', 'baz']));
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e1.removeAllListeners('bar');
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e1.removeAllListeners('baz');
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assert.deepEqual(e1.listeners('foo'), [listener]);
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assert.deepEqual(e1.listeners('bar'), []);
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assert.deepEqual(e1.listeners('baz'), []);
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// after calling removeAllListeners,
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// the old listeners array should stay unchanged
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assert.deepEqual(fooListeners, [listener]);
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assert.deepEqual(barListeners, [listener]);
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assert.deepEqual(bazListeners, [listener, listener]);
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// after calling removeAllListeners,
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// new listeners arrays are different from the old
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assert.notEqual(e1.listeners('bar'), barListeners);
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assert.notEqual(e1.listeners('baz'), bazListeners);
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var e2 = new events.EventEmitter();
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e2.on('foo', listener);
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e2.on('bar', listener);
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// expect LIFO order
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e2.on('removeListener', expect(['foo', 'bar', 'removeListener']));
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e2.on('removeListener', expect(['foo', 'bar']));
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e2.removeAllListeners();
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console.error(e2);
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assert.deepEqual([], e2.listeners('foo'));
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assert.deepEqual([], e2.listeners('bar'));
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var e3 = new events.EventEmitter();
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e3.on('removeListener', listener);
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// check for regression where removeAllListeners throws when
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// there exists a removeListener listener, but there exists
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// no listeners for the provided event type
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assert.doesNotThrow(e3.removeAllListeners.bind(e3, 'foo'));
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