RocketChat/Rocket.Chat

/**
 * @jest-environment jsdom
 */

import { Random } from './main.client';

it('which should generate the same sequence in all environments', () => {
    const random = Random.createWithSeeds(0);

    expect(random.id()).toBe('cp9hWvhg8GSvuZ9os');
    expect(random.id()).toBe('3f3k6Xo7rrHCifQhR');
    expect(random.id()).toBe('shxDnjWWmnKPEoLhM');
    expect(random.id()).toBe('6QTjB8C5SEqhmz4ni');
});

describe('format', () => {
    it('should output id in the right format', () => {
        expect(Random.id(17)).toHaveLength(17);
        expect(Random.id(29)).toHaveLength(29);
    });

    it('should output hexString in the right format', () => {
        const hexString = Random.hexString(9);
        expect(hexString).toHaveLength(9);
        expect(Number.parseInt(hexString, 16)).not.toBeNaN();
    });

    it('should output fraction in the right range', () => {
        const frac = Random.fraction();
        expect(frac).toBeLessThan(1.0);
        expect(frac).toBeGreaterThanOrEqual(0.0);
    });

    it('should output secret in the right format', () => {
        expect(Random.secret().length).toBe(43);
        expect(Random.secret(13).length).toBe(13);
    });
});

describe('Alea', () => {
    it('should be undefined if window.crypto?.getRandomValues is available', () => {
        const useGetRandomValues = !!(typeof window !== 'undefined' && window.crypto?.getRandomValues);

        if (useGetRandomValues) {
            expect(Random).not.toHaveProperty('alea');
        } else {
            expect(Random).toHaveProperty('alea');
        }
    });
});

describe('createWithSeeds', () => {
    it('should throw if no seeds are provided', () => {
        expect(() => Random.createWithSeeds()).toThrow();
    });
});