simple-pure-utils
Version:
Funciones puras para manipulación de objetos, arreglos, promesas y observables
47 lines • 5.12 kB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
import * as rx from "rxjs";
import { obsToPromise, delay, doOnSubscribe, } from "../logic";
import { syncResolve } from "./split";
test("observable to prom sync", () => __awaiter(void 0, void 0, void 0, function* () {
const obs = rx.from([10, 20]);
const prom = obsToPromise(obs);
let result = 0;
prom.then(x => result = x);
expect(result).toBe(20);
}));
test("observable to prom from prom sync", () => __awaiter(void 0, void 0, void 0, function* () {
const obs = rx.from(syncResolve(20));
const prom = obsToPromise(obs);
let result = 0;
prom.then(x => result = x);
expect(result).toBe(20);
}));
test("observable to prom async", () => __awaiter(void 0, void 0, void 0, function* () {
//Verifica que el numero de subscripciones ocasioando por el toPromise sea igual al obsToPromise:
let sub1 = 0;
let sub2 = 0;
const obs1 = rx.from(delay(10).then(x => 20)).pipe(doOnSubscribe(() => sub1++));
const obs2 = rx.from(delay(10).then(x => 20)).pipe(doOnSubscribe(() => sub2++));
const prom1 = obs1.toPromise();
const prom2 = obsToPromise(obs2);
expect(sub1).toBe(sub2);
let result1 = 0, result2 = 0;
prom1.then(x => result1 = x);
expect(result1).toBe(0);
prom2.then(x => result2 = x);
expect(result2).toBe(0);
expect(sub1).toBe(sub2);
yield Promise.all([prom1, prom2]);
expect(result1).toBe(20);
expect(result2).toBe(20);
expect(sub1).toBe(sub2);
}));
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