Shuffle

• is exported0ms ‣

  expect(shuffle).to.be.a('function');

• mutates the array0ms ‣

  var cards = deck.slice(0);
  shuffle(cards);
  expect(cards).to.not.eql(deck);

• is fluent1ms ‣

  var cards = deck.slice(0);
  var deal = shuffle(cards);
  expect(deal).to.have.lengthOf(cards.length);
  expect(deal).to.eql(cards);

• randomly swaps2ms ‣

  var cards = deck.slice(0);
  shuffle(cards);
  
  expect(cards).to.have.lengthOf(deck.length);
  for (var i = 0; i < deck.length; ++i) {
      expect(cards).to.include(deck[i]);
  }