tsoid/dist/src/promises/__tests__/liftp2.test.js

Typed functional library to deal with async operations.

"use strict";
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());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const lift_1 = require("../lift");
describe('liftP2', () => {
    const add = (x, y) => x + y;
    const getOne = () => new Promise((resolve) => {
        setTimeout(() => {
            resolve(1);
        }, 2000);
    });
    it('Should lift a function with 2-arity into two promises', () => {
        const getTen = () => Promise.resolve(10);
        const getSeven = () => Promise.resolve(7);
        const result = lift_1.liftP2(add, getTen, getSeven);
        result.then((value) => {
            expect(value).toBe(17);
        });
    });
    it('Should lift a function with 2-arity into two delayed promises', () => __awaiter(void 0, void 0, void 0, function* () {
        const getTwo = () => new Promise((resolve) => {
            setTimeout(() => {
                resolve(2);
            }, 500);
        });
        const result = yield lift_1.liftP2(add, getOne, getTwo);
        expect(result).toBe(3);
    }));
    it('Should propagate an Error', () => __awaiter(void 0, void 0, void 0, function* () {
        const getTwo = () => new Promise((_, reject) => {
            reject(new Error('Some error message'));
        });
        const result = yield lift_1.liftP2(add, getOne, getTwo);
        expect(result).toBeInstanceOf(Error);
        expect(result.message).toBe('Some error message');
    }));
    it('Should propagate the Error if first action resolves to an Error', () => __awaiter(void 0, void 0, void 0, function* () {
        const getTwo = () => new Promise((resolve) => {
            resolve(new Error('Oops'));
        });
        // @ts-ignore
        const result = yield lift_1.liftP2(add, getTwo, getOne);
        expect(result).toBeInstanceOf(Error);
        expect(result.message).toBe('Oops');
    }));
    it('Should propagate the Error if second action resolves to an Error', () => __awaiter(void 0, void 0, void 0, function* () {
        // eslint-disable-next-line sonarjs/no-identical-functions
        const getTwo = () => new Promise((resolve) => {
            resolve(new Error('Oops'));
        });
        // @ts-ignore
        const result = yield lift_1.liftP2(add, getOne, getTwo);
        expect(result).toBeInstanceOf(Error);
        expect(result.message).toBe('Oops');
    }));
});