def test_get_newest_item():
item_a = Item(age=3)
item_b = Item(age=1)
item_c = Item(age=2)
fatimah = Vendor(inventory=[item_a, item_b, item_c])
newest_item = fatimah.get_newest_item()
assert newest_item.age == pytest.approx(1.0)
def test_newest_item_with_duplicates():
item_a = Decor(year=1999)
item_b = Electronics(year=1970)
item_c = Clothing(year=1999)
madison = Vendor(inventory=[item_a, item_b, item_c])
newest_item = madison.get_newest_item()
assert newest_item.age == 22
assert newest_item.year == 1999
def test_get_newest_item():
item_a = Clothing(year=2005)
item_b = Electronics(year=2002)
item_c = Clothing(year=1955)
item_d = Decor(year=1982)
item_e = Clothing(year=2013)
madison = Vendor(inventory=[item_a, item_b, item_c, item_d, item_e])
newest_item = madison.get_newest_item()
assert newest_item.year == 2013
assert newest_item.age == 8
assert newest_item.category == "Clothing"
def test_get_newest_item_empty_inventory_is_none():
madison = Vendor(inventory=[])
newest_item = madison.get_newest_item()
assert newest_item is None
