redioactive/dist/__tests__/flatmap.spec.js

Reactive streams for chaining overlapping promises.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const redio_1 = __importDefault(require("../redio"));
describe('Testing flat mapping of a stream to streams', () => {
    test('Convert some uppercase strings to lowercase', async () => {
        await expect((0, redio_1.default)(['ONE', 'Two', 'ThReE'])
            .flatMap((x) => (0, redio_1.default)([x.toLowerCase()]))
            .toArray()).resolves.toEqual(['one', 'two', 'three']);
    });
    test('Copes with an empty streem', async () => {
        await expect((0, redio_1.default)([])
            .flatMap((x) => (0, redio_1.default)([+x]))
            .toArray()).resolves.toEqual([]);
    });
    test('Empty out a stream', async () => {
        await expect((0, redio_1.default)([1, 2, 3])
            // eslint-disable-next-line @typescript-eslint/no-unused-vars
            .flatMap((_x) => (0, redio_1.default)([]))
            .toArray()).resolves.toEqual([]);
    });
    test('Double up a stream', async () => {
        await expect((0, redio_1.default)([1, 2, 3])
            .flatMap((x) => (0, redio_1.default)([x, x]))
            .toArray()).resolves.toEqual([1, 1, 2, 2, 3, 3]);
    });
});