a simple card game

The task is to design and implement a simple card game. The card game may consist of one or more decks of cards. The solution is considered complete when you can mix, sort and draw cards from the card game and the parts are unit tested. Sorting shall sort the cards in the card game according to the color and denomination: Hearts (Ace, 2, 3 ... Kung), diamonds, clubs, spades. All decks are included in the card game to be sorted. Pull the card will show the top card in the card game until all the cards are drawn. Mixture should put the cards in the card game in random order. The task is assessed primarily on the design and logic to mix, sort and draw cards with associated unit tests. The task have to be solved in Java.