angular-docs-cn/packages/zone.js/test/browser/MediaQuery.spec.ts

27 lines
908 B
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {zoneSymbol} from '../../lib/common/utils';
import {ifEnvSupports} from '../test-util';
declare const global: any;
function supportMediaQuery() {
const _global =
typeof window === 'object' && window || typeof self === 'object' && self || global;
return _global['MediaQueryList'] && _global['matchMedia'];
}
describe('test mediaQuery patch', ifEnvSupports(supportMediaQuery, () => {
it('test whether addListener is patched', () => {
const mqList = window.matchMedia('min-width:500px');
if (mqList && mqList['addListener']) {
expect((mqList as any)[zoneSymbol('addListener')]).toBeTruthy();
}
});
}));