Tests the contract

```#
# Card rarities
#     - Epic = 5
#     - Legendary = 4
#     - Rare = 3
#     - Uncommon = 2
#     - Common = 1
#
# Functions:
#
#     create_card(name: int128, set: int128, rarity: int128)
#         - Creates a card at given rarity, it becomes available for batch creation
#         - Only genesis_men can create cards
#
#     generate_booster_packs
#         - Creates a batch of booster packs of given set name
#
#     buy_booster_pack
#


owner: public(address)
# Only genesis_men can create_cards
#MAX_GENESIS_MEN = num(5)
genesis_men: public(address[5])
cards: public({
    set_hash: bytes32,
    rarity: int128,
}[bytes32])


@public
def __init__():
    self.owner = msg.sender
    self.genesis_men[0] = self.owner

@public
def set_genesis_man(_address: address, _index: int128):
    assert self.owner == msg.sender
    assert _index > 0 and _index < 5
    self.genesis_men[_index] = _address


@public
def create_card(_set_hash: bytes32, _card_hash: bytes32, _rarity: int128):
    # Only genesis_men can create cards
    assert msg.sender in self.genesis_men
    # Card shouldn't exist yet
    #assert _hash not in self.cards.keys()  # does not work yet....
    self.cards[_card_hash] = {set_hash: _set_hash, rarity: _rarity}```