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packages/core/testing/src/async.ts
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hawkgs
docs: set syntax highlighting of code examples MD code blocks (#59026)
04 дек 2024, 19:30
04 дек 2024, 19:30
0513fbc
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/** * @license * Copyright Google LLC 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.dev/license */ /** * Wraps a test function in an asynchronous test zone. The test will automatically * complete when all asynchronous calls within this zone are done. Can be used * to wrap an {@link inject} call. * * Example: * * ```ts * it('...', waitForAsync(inject([AClass], (object) => { * object.doSomething.then(() => { * expect(...); * }) * }))); * ``` * * @publicApi */ export function waitForAsync(fn: Function): (done: any) => any { const _Zone: any = typeof Zone !== 'undefined' ? Zone : null; if (!_Zone) { return function () { return Promise.reject( 'Zone is needed for the waitForAsync() test helper but could not be found. ' + 'Please make sure that your environment includes zone.js', ); }; } const asyncTest = _Zone && _Zone[_Zone.__symbol__('asyncTest')]; if (typeof asyncTest === 'function') { return asyncTest(fn); } return function () { return Promise.reject( 'zone-testing.js is needed for the async() test helper but could not be found. ' + 'Please make sure that your environment includes zone.js/testing', ); }; }