def test_canMakeDrink_recipe_unkown():
""" Test to see if canMakeDrink works when drink recipe is not known.
"""
# assign data to pass to coffee machine
num_outlets = 1
beverages = {}
total_items_qty = {}
CM = CoffeeMachine(num_outlets, beverages, total_items_qty)
with pytest.raises(ValueError,
match="Drink recipe is not known" + " in canMake."):
CM._CoffeeMachine__canMakeDrink("hot_tea")
def test_canMakeDrink_drink_type():
""" Test to see if canMakeDrink works when drink name is not a string.
"""
# assign data to pass to coffee machine
num_outlets = 1
beverages = {}
total_items_qty = {}
CM = CoffeeMachine(num_outlets, beverages, total_items_qty)
with pytest.raises(ValueError,
match="Drink name is not a string" + " in canMake."):
CM._CoffeeMachine__canMakeDrink(1)
def test_canMakeDrink_functionality_possible():
""" Test to see if canMake works if drink is possible to make.
"""
# assign data to pass to coffee machine
num_outlets = 1
beverages = {"hot_tea": {"milk": 1}}
total_items_qty = {"milk": 2}
CM = CoffeeMachine(num_outlets, beverages, total_items_qty)
assert CM._CoffeeMachine__canMakeDrink("hot_tea") == 1
def test_canMakeDrink_functionality_impossible():
""" Test to see if canMake works if drink is not possible to make
because of non-existent ingredient.
"""
# assign data to pass to coffee machine
num_outlets = 1
beverages = {"hot_tea": {"cocoa": 2}}
total_items_qty = {"milk": 1}
CM = CoffeeMachine(num_outlets, beverages, total_items_qty)
assert CM._CoffeeMachine__canMakeDrink("hot_tea") == -1
