fedcfec346
This commit adds missing tests for obserables and promises which are both stand-alone mini-apps. PR Close #34537
73 lines
1.5 KiB
TypeScript
73 lines
1.5 KiB
TypeScript
// #docplaster
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import { Observable } from 'rxjs';
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import { map } from 'rxjs/operators';
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export function docRegionObservable(console: Console) {
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// #docregion observable
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// declare a publishing operation
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const observable = new Observable<number>(observer => {
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// Subscriber fn...
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// #enddocregion observable
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// The below code is used for unit testing only
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observer.next(2);
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// #docregion observable
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});
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// initiate execution
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observable.subscribe(value => {
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// observer handles notifications
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// #enddocregion observable
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// The below code is used for unit testing only
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console.log(value);
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// #docregion observable
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});
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// #enddocregion observable
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return observable;
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}
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export function docRegionUnsubscribe() {
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const observable = new Observable<number>(() => {
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// Subscriber fn...
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});
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// #docregion unsubscribe
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const subscription = observable.subscribe(() => {
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// observer handles notifications
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});
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subscription.unsubscribe();
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// #enddocregion unsubscribe
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return subscription;
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}
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export function docRegionError() {
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const observable = new Observable<number>(() => {
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// Subscriber fn...
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});
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// #docregion error
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observable.subscribe(() => {
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throw new Error('my error');
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});
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// #enddocregion error
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}
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export function docRegionChain() {
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let observable = new Observable<number>(observer => {
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// Subscriber fn...
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observer.next(2);
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});
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observable =
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// #docregion chain
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observable.pipe(map(v => 2 * v));
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// #enddocregion chain
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return observable;
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}
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