@tommymynnson/lotide/test/countLettersTest.js

A mini clone of the [Lodash](https://lodash.com) library.

const assert = require('chai').assert;
const countLetters = require('../countLetters');

describe('#countLetters', () => {
  it('should return true', () => {
    const result = countLetters('lighthouse in the house');
    const expected = {
      l: 1,
      i: 2,
      g: 1,
      h: 4,
      t: 2,
      o: 2,
      u: 2,
      s: 2,
      e: 3,
      n: 1
    };

    assert.deepEqual(result, expected);
  });
});