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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>
24 lines
547 B
JavaScript
24 lines
547 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();
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ee.on(foo, listener);
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assert.deepStrictEqual(ee.listeners(foo), [listener]);
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ee.emit(foo);
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ee.removeAllListeners();
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assert.deepStrictEqual(ee.listeners(foo), []);
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ee.on(foo, listener);
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assert.deepStrictEqual(ee.listeners(foo), [listener]);
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ee.removeListener(foo, listener);
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assert.deepStrictEqual(ee.listeners(foo), []);
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