angular-cn/aio/content/examples/rx-library/src/simple-creation.1.spec.ts

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import { of } from 'rxjs';
import { docRegionPromise } from './simple-creation.1';
describe('simple-creation.1', () => {
it('should create a promise from an observable and return an empty object', () => {
const console = {log: jasmine.createSpy('log')};
const fetch = () => of({foo: 42});
docRegionPromise(console, fetch);
expect(console.log.calls.allArgs()).toEqual([
[{foo: 42}],
['Completed'],
]);
});
});