def test_applicable_tax(self):
m = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m.add_item(d)
m.add_item(f)
self.assertAlmostEqual(f._applicable_tax(), 0.10)
self.assertAlmostEqual(d._applicable_tax(), 0.18)
def test_item_menu(self):
m = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
d.menu = m
try:
d.menu = assignment3.Menu()
except:
pass
self.assertIs(d.menu, m)
def test_menu_add_items(self):
m1 = assignment3.Menu()
m2 = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
self.assertTrue(m1.add_item(d))
self.assertTrue(m2.add_item(f))
self.assertFalse(m2.add_item(d))
self.assertFalse(m1.add_item(f))
def test_menu_items(self):
m = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
m.add_item(d)
self.assertIs(d.menu, m)
self.assertEqual(list(m.items), [d])
with self.assertRaises(AttributeError):
m.items = [None]
self.assertEqual(list(m.items), [d])
def test_grouporder_items(self):
m1 = assignment3.Menu()
m2 = assignment3.Menu()
o = assignment3.GroupOrder()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m1.add_item(d)
m2.add_item(f)
self.assertTrue(o.add_item(d))
self.assertFalse(o.add_item(f))
def test_menu_add_items2(self):
m1 = assignment3.Menu()
m2 = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m1.add_item(d)
m2.add_item(f)
m2.add_item(d)
m1.add_item(f)
self.assertNotIn(d, m2.items)
self.assertNotIn(f, m1.items)
def test_menu_items_copy(self):
m = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m.add_item(d)
self.assertIsNot(m.items, m.items)
it = m.items
if hasattr(it, "add"):
it.add(f)
if hasattr(it, "append"):
it.append(f)
self.assertEqual(list(m.items), [d])
def test_grouporder_price_over(self):
m = assignment3.Menu()
o = assignment3.GroupOrder()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m.add_item(d)
m.add_item(f)
o.add_item(d)
o.add_item(f)
self.assertAlmostEqual(o.price_plus_tax(), 1.50 * 1.18 + 0.75 * 1.10)
self.assertAlmostEqual(o.price_plus_tax_and_tip(0.32),
(1.50 * 1.18 + 0.75 * 1.10) * 1.32)
def test_alternate_tax(self):
class MyMenu(assignment3.Menu):
food_tax = 0.12
drink_tax = 0.16
m = MyMenu()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m.add_item(d)
m.add_item(f)
self.assertAlmostEqual(f.price_plus_tax(), 0.75 * 1.12)
self.assertAlmostEqual(d.price_plus_tax(), 1.50 * 1.16)
self.assertAlmostEqual(f._applicable_tax(), 0.12)
self.assertAlmostEqual(d._applicable_tax(), 0.16)
def test_order_large(self):
m = assignment3.Menu()
o = assignment3.Order()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
a = assignment3.Food("A", 10.00)
b = assignment3.Food("B", 9.50)
m.add_item(d)
m.add_item(f)
m.add_item(a)
m.add_item(b)
o.add_item(d)
o.add_item(f)
o.add_item(a)
o.add_item(b)
self.assertAlmostEqual(o.price_plus_tax(),
1.50 * 1.18 + (0.75 + 10 + 9.5) * 1.10)
def test_grouporder_super_use(self):
class DeliveredOrder(assignment3.Order):
def price_plus_tax_and_tip(self, amount):
return super().price_plus_tax_and_tip(amount) + 1.0
class GroupDeliveredOrder(assignment3.GroupOrder, DeliveredOrder):
pass
m = assignment3.Menu()
o = GroupDeliveredOrder()
d = assignment3.Drink("Lemonade", 1.50)
f = assignment3.Food("Toast", 0.75)
m.add_item(d)
m.add_item(f)
o.add_item(d)
o.add_item(f)
self.assertAlmostEqual(o.price_plus_tax_and_tip(0.20),
(1.50 * 1.18 + 0.75 * 1.10) * 1.20 + 1.0)
def test_drink_prop(self):
m = assignment3.Menu()
d = assignment3.Drink("Lemonade", 1.50)
m.add_item(d)
self.assertAlmostEqual(d.price_plus_tax(), 1.50 * 1.18)
self.assertEqual(d.menu, m)
def test_drink_attr(self):
d = assignment3.Drink("Lemonade", 1.50)
self.assertAlmostEqual(d.price, 1.50)
