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7a518788e9
* Document that Symbol can used as event names. * Add test for using Symbol as event names PR-URL: https://github.com/nodejs/node/pull/4151 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
24 lines
536 B
JavaScript
24 lines
536 B
JavaScript
'use strict';
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const common = require('../common');
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const EventEmitter = require('events');
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const assert = require('assert');
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const ee = new EventEmitter();
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const foo = Symbol('foo');
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const listener = common.mustCall(function() {});
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ee.on(foo, listener);
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assert.deepEqual(ee.listeners(foo), [listener]);
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ee.emit(foo);
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ee.removeAllListeners();
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assert.deepEqual(ee.listeners(foo), []);
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ee.on(foo, listener);
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assert.deepEqual(ee.listeners(foo), [listener]);
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ee.removeListener(foo, listener);
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assert.deepEqual(ee.listeners(foo), []);
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