def balance(self):
"""
Property responsible for displaying money nicely
instead of just a Decimal object that could
have up to 28 points of precision
"""
return money.to_money(self._balance)
def test_deposit_always_logs_a_message(self, deposit: Decimal, caplog):
deposit = money.to_money(deposit)
machine = VendingMachine()
machine.deposit(deposit)
self.logs_one_message(caplog)
# Resetting the log capturing utility because hypothesis won't reset it
caplog.clear()
def test_deposit_0_or_less_logs_error_to_user(self, caplog):
deposit = money.to_money(Decimal("-5"))
machine = VendingMachine()
machine.deposit(deposit)
self.logs_one_message(caplog)
assert "ERROR" in caplog.text
assert "negative or 0" in caplog.text
def dispense_change(self) -> Decimal:
"""
Returns the remaining amount to the user
"""
change = money.to_money(self._balance)
self._balance = Decimal(0)
fancy_print(LOG_SUCCESS, f"Dispensed {change}. Have a good day!")
return change
def test_deposit_money_logs_success_to_user(self, caplog):
deposit = money.to_money(Decimal("30"))
machine = VendingMachine()
machine.deposit(deposit)
self.logs_one_message(caplog)
assert "SUCCESS" in caplog.text
assert "Successfully deposited" in caplog.text
def test_deposit_money_accepts_positive_amounts(self, deposit: Decimal):
"""
Test case ensures that any positive amount rounded to the
nearest cent can be accepted by the vending machine.
"""
deposit = money.to_money(deposit)
machine = VendingMachine()
machine.deposit(deposit)
machine.deposit(deposit)
assert machine.balance == money.add(deposit, deposit)
def to_json(self) -> Dict[str, Any]:
"""
Dumps the core vending machine object to a json
serializable object to be able to save to disk
to persist state across CLI commands.
"""
return {
"balance": str(money.to_money(self._balance)),
"items": {
location: item.to_json()
for location, item in self.items.items()
},
"purchases": [purchase.to_json() for purchase in self.purchases],
}
def test_purchase_returns_proper_change(self, item: Item,
balance: Decimal): # pylint: disable=no-self-use,invalid-name,redefined-outer-name
"""
Testing to ensure that any valid purchase returns proper change
by the formula ouput = input - price of item.
Capping largest value at 100k because when a decimal
gets generated by hypothesis that is larger than decimal's
size precision, an error gets thrown.
"""
balance = money.to_money(balance)
expected_change = money.subtract(balance, item.price)
# Hypothesis doesn't reset the fixture, so we're going to manually
# reset the remaining_stock instance variable to make sure
# we don't hit OutOfStockErrors after a couple tests
item.remaining_stock = 5
change = item.purchase(balance)
assert change == expected_change