def test_Deck_deal_raises_error_with_no_cards():
# Setup
deck = blackjack.Deck()
deck.cards.clear()
# Exercise
with pytest.raises(ValueError) as error_info:
deck.deal()
# Verify
assert str(error_info.value) == "No cards left in deck"
def test_Deck_instantiation():
# Setup - none necessary
# Exercise
deck = blackjack.Deck()
# Verify
assert deck.suites == ["hearts", "diamonds", "spades", "clubs"]
assert len(deck.suites) == 4
assert deck.values == [
2, 3, 4, 5, 6, 7, 8, 9, 10, "Jack", "Queen", "King", "Ace"
]
assert len(deck.values) == 13
assert len(deck.cards) == 52
def test_Deck_shuffle():
# Setup
deck = blackjack.Deck()
ordered_cards = deck.cards.copy()
# check that ordered cards are ordered by value
ordered_check = [
*itertools.chain.from_iterable([
itertools.repeat(x, 4)
for x in [*range(2, 11)] + ["Jack", "Queen", "King", "Ace"]
])
]
assert [c.value for c in ordered_cards] == ordered_check
# Exercise
deck.shuffle()
# Verify
assert deck.cards != ordered_cards
def test_Deck_deal():
# Setup
deck = blackjack.Deck()
# Exercise
card1 = deck.deal()
card2 = deck.deal()
card3 = deck.deal()
card4 = deck.deal()
# Verify
# Due to creation of deck (WITHOUT SHUFFLING), top 4 cards are all 2's
assert card1.value == 2
assert card1.suite == "hearts"
assert card2.value == 2
assert card2.suite == "diamonds"
assert card3.value == 2
assert card3.suite == "spades"
assert card4.value == 2
assert card4.suite == "clubs"