def test_delete_supercar():
supercars[1] = {'engine': '1'}
delete_supercar(1)
assert_equal(all_supercars(), '[]')
def test_all_supercars():
supercars[1] = {'engine': '1'}
supercars[2] = {'engine': '2'}
assert_equal(all_supercars(), '[{"engine": "1"}, {"engine": "2"}]')
def test_all_supercars_empty():
assert_equal(all_supercars(), '[]')
def test_insert_supercar():
supercars[1] = {'engine': 1}
fake_request_json('{"engine": "wwwrrrrmmmm"}')
insert_supercar()
assert_equal(all_supercars(), '[{"engine": 1}, {"engine": "wwwrrrrmmmm"}]')
