def test_buy_banana():
"""
Given that "banana" is purchased, a ValueError should be
raised.
"""
with pytest.raises(ValueError):
buy_product('banana', 5) # Random value of 5 balance
def test_drink_with_a_274_should_raise_insufficient_funds():
"""
Given that a drink is attempted to be purchased with a balance
of 274, an InsufficientFunds exception should be raised.
"""
with pytest.raises(InsufficientFunds):
buy_product('drink', 274)
def test_insufficient_funds_chips():
"""
Asserts when the customer has not entered enough funds, the item cannot be purchased.
In this test, the product costs 225, the customer has 224.
"""
with pytest.raises(vending_machine.InsufficientFunds):
assert vending_machine.buy_product("chips", 224)
def test_buy_candy():
"""
Given that candy is purchased with a balance of 315,
0 should be returned.
"""
assert buy_product('candy', 315) == 0
def test_buy_chips():
"""
Given that chips are purchased with a balance of 225,
0 should be returned.
"""
assert buy_product('chips', 225) == 0
def test_drink_275():
assert vending_machine.buy_product('drink', 275) == 0
def test_drink_274():
with pytest.raises(InsufficientFunds):
vending_machine.buy_product('drink', 274)
def test_buy_chips():
"""
Asserts that chips can be purchased
"""
assert vending_machine.buy_product("chips", 225) == 0
def test_candy_315():
assert vending_machine.buy_product('candy', 315) == 0
def test_chips_225():
assert vending_machine.buy_product('chips', 225) == 0
def test_buy_drink():
"""
Asserts that a drink can be purchased
"""
assert vending_machine.buy_product("drink", 275) == 0
def test_calculate_remaining_funds():
"""
Asserts when the customer buys a drink with 300, and the drink costs 275.
25 cents will remain.
"""
assert vending_machine.buy_product("drink", 300) == 25
def test_buy_candy():
"""
Asserts that a drink can be purchased
"""
assert vending_machine.buy_product("candy", 315) == 0
def test_buy_a_drink_with_remaining_balance():
"""
Given that the balance exceeds the cost of a drink,
the difference should be returned.
"""
assert buy_product('drink', 300) == 25
def test_banana():
with pytest.raises(ValueError):
vending_machine.buy_product('banana', 275)
def test_buy_a_drink():
"""
Given that "drink" is purchased with an exact balance,
the balance returned should be 0.
"""
assert buy_product('drink', 275) == 0
def test_buy_banana():
"""
Asserts that a value error is thrown when a banana is attempted to be purchased
"""
with pytest.raises(ValueError):
assert vending_machine.buy_product("banana", 275)