personal-document-generator/__test__/utils/letter-generator.test.js

A simple DNI (spanish ID document number) and NIE (id number for foreing people in spain) generators.

import { expect, test } from 'vitest';

import { getControlLetter } from '../../generators/utils/letter-generator.js';

test('should return the correct letter for the given number', () => {
  expect(getControlLetter(12345678)).toBe('Z');
});