def test_best_by_edge_with_duplicates():
item_a = Clothing(edge=2.0)
item_b = Clothing(edge=2.0)
item_c = Clothing(edge=4.0)
mary = Vendor(inventory=[item_a, item_b, item_c])
newest_item = mary.get_best_by_edge("Clothing")
assert newest_item.category == "Clothing"
assert newest_item.edge == pytest.approx(2.0)
def test_best_by_edge_no_matches_is_none():
item_a = Electronics(edge=1.0)
item_b = Decor(edge=2.0)
item_c = Electronics(edge=4.0)
item_d = Decor(edge=5.0)
item_e = Electronics(edge=3.0)
mary = Vendor(inventory=[item_a, item_b, item_c, item_d, item_e])
newest_item = mary.get_best_by_edge("Clothing")
assert newest_item is None
def test_best_by_edge():
item_a = Electronics(edge=1.0)
item_b = Decor(edge=2.0)
item_c = Electronics(edge=4.0)
item_d = Decor(edge=5.0)
item_e = Electronics(edge=3.0)
mary = Vendor(inventory=[item_a, item_b, item_c, item_d, item_e])
newest_item = mary.get_best_by_edge("Electronics")
assert newest_item.category == "Electronics"
assert newest_item.edge == pytest.approx(1.0)
