27 lines
787 B
TypeScript
27 lines
787 B
TypeScript
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import { docRegionChain, docRegionObservable, docRegionUnsubscribe } from './observables';
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describe('observables', () => {
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it('should print 2', (doneFn: DoneFn) => {
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const consoleLogSpy = spyOn(console, 'log');
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const observable = docRegionObservable(console);
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observable.subscribe(() => {
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expect(consoleLogSpy).toHaveBeenCalledTimes(1);
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expect(consoleLogSpy).toHaveBeenCalledWith(2);
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doneFn();
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});
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});
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it('should close the subscription', () => {
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const subscription = docRegionUnsubscribe();
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expect(subscription.closed).toBeTruthy();
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});
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it('should chain an observable', (doneFn: DoneFn) => {
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const observable = docRegionChain();
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observable.subscribe(value => {
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expect(value).toBe(4);
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doneFn();
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});
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});
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});
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