def setUp(self):
time = timezone.now()
staff = Staff(name="C", position="B")
staff.save()
product = LemonadeProduct(name="Lemonade", price=20)
product.save()
sale_1 = Sale(staff_id=staff, product_id=product, quantity=1)
sale_1.save()
sale_2 = Sale(staff_id=staff, product_id=product, quantity=2)
one_week = timezone.now() + datetime.timedelta(days=7)
sale_2.date_sale = one_week
sale_2.save()
