@tommymynnson/lotide/test/flattenTest.js

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

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

describe('#flatten', () => {
  it('should return [1, 2, 3, 4, 5, 6] for [1, 2, [3, 4], 5, [6]]', () => {
    assert.deepEqual(flatten([1, 2, [3, 4], 5, [6]]), [1, 2, 3, 4, 5, 6]);
  });

  it('should return [[], []] for [[]]', () => {
    assert.deepEqual(flatten([[], []]), []);
  });
});