mirror of
https://github.com/microsoft/playwright.git
synced 2025-06-26 21:40:17 +00:00
56 lines
2.2 KiB
TypeScript
56 lines
2.2 KiB
TypeScript
// Copyright Joyent, Inc. and other Node contributors.
|
|
// Modifications copyright (c) by Microsoft Corporation
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
// persons to whom the Software is furnished to do so, subject to the
|
|
// following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
|
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
// USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
import { EventEmitter } from '../../../packages/playwright-core/lib/client/eventEmitter';
|
|
import { test, expect } from '@playwright/test';
|
|
|
|
test.describe('EventEmitter', () => {
|
|
test('should maintain event names correctly', () => {
|
|
const e = new EventEmitter();
|
|
const m = () => {};
|
|
e.on('foo', function() {});
|
|
expect(e.eventNames().length).toBe(1);
|
|
expect(e.eventNames()[0]).toBe('foo');
|
|
|
|
e.on('bar', m);
|
|
expect(e.eventNames().length).toBe(2);
|
|
expect(e.eventNames()[0]).toBe('foo');
|
|
expect(e.eventNames()[1]).toBe('bar');
|
|
|
|
e.removeListener('bar', m);
|
|
expect(e.eventNames().length).toBe(1);
|
|
expect(e.eventNames()[0]).toBe('foo');
|
|
|
|
if (typeof Symbol !== 'undefined') {
|
|
const s = Symbol('s');
|
|
e.on(s, m);
|
|
expect(e.eventNames().length).toBe(2);
|
|
expect(e.eventNames()[0]).toBe('foo');
|
|
expect(e.eventNames()[1]).toBe(s);
|
|
|
|
e.removeListener(s, m);
|
|
expect(e.eventNames().length).toBe(1);
|
|
expect(e.eventNames()[0]).toBe('foo');
|
|
}
|
|
});
|
|
});
|