import {describe, beforeAll, it, expect} from 'bun:test';
import {Strings} from '../../src/strings';

const randomStringCount = 11;

describe('When generating random strings', () => {
  it('generates a random string', () => {
    const randomString = Strings.random();

    expect(typeof randomString).toBe('string');
    expect(randomString.length).toBeGreaterThan(0);
  });

  describe('Given a length argument', () => {
    const length = 4;

    it('generates a random string of the given length', () => {
      const randomString = Strings.random(length);

      expect(typeof randomString).toBe('string');
      expect(randomString.length).toBeGreaterThan(0);
      expect(randomString.length).toBe(length);
    });
  });

  describe(`Given [${randomStringCount}] are generated`, () => {
    let randomStrings;

    beforeAll(() => {
      randomStrings = Array.from({length: randomStringCount}, () => Strings.random());
    });

    it('generates random strings such that no strings are identical', () => {
      const uniqueRandomStrings = new Set(randomStrings);

      expect(uniqueRandomStrings.size).toBe(randomStringCount);
    });
  });
});