redioactive/dist/__tests__/doto.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('Doto side effect values', () => {
    test('Each is called the expected number of times', async () => {
        const dotoFn = jest.fn();
        await (0, redio_1.default)([1, 2, 3])
            .doto(dotoFn)
            .each(() => {
            /* void */
        })
            .toPromise();
        expect(dotoFn).toHaveBeenCalledTimes(3);
        expect(dotoFn.mock.calls).toEqual([[1], [2], [3]]);
    });
    test('Words with an empty stream', async () => {
        const dotoFn = jest.fn();
        await (0, redio_1.default)([])
            .doto(dotoFn)
            .each(() => {
            /* void */
        })
            .toPromise();
        expect(dotoFn).not.toHaveBeenCalled();
    });
    test('Side effect example', async () => {
        await expect((0, redio_1.default)([[1], [2], [3]])
            .doto((x) => {
            x.push(1);
        })
            .toArray()).resolves.toEqual([
            [1, 1],
            [2, 1],
            [3, 1]
        ]);
    });
});