testing_code_with_parametrization.py

@pytest.mark.django_db
@pytest.mark.parametrize('number_of_toppings', list(range(0, 10)))
def test_pizza_price(number_of_toppings):
    # Preparation phase
    pizza = create_pizza(number_of_toppings=number_of_toppings)

    # Calculating results
    actual_price = pizza.total_price
    expected_price = Decimal(sum([t.price for t in pizza.toppings.all()]))

    # Assertion
    assert actual_price == expected_price