Test not testing what is intended in radix-sort.spec.js

[Pier-LucPicard]

Just a head up.

in test /tests/sorting/radix-sort.spec.js
If you use this construction:

    let array = Array(1000000).map(() => {
      return parseInt((Math.random() * 1000000000), 10);
    });

Like in test

 it('should work with large arrays', function() {
    this.timeout(3000);
    let array = Array(1000000).map(() => {
      return parseInt((Math.random() * 1000000000), 10);
    });
    expect(sort(array)).to.be.sorted();
  });

This returns an empty array of length 1000000 but not initialised. Therefore, it try to sort an empty array instead of an array of random integer values.