def test_can_buy(self): """Test out the _can_buy helper method.""" deck = Deck() deck.treasure = 3 deck.buys = 1 # Test too little treasure for the card assert_equal(deck._can_buy(cards.Gold), False) # Test just enough assert_equal(deck._can_buy(cards.Silver), True) # Test too much assert_equal(deck._can_buy(cards.Copper), True)