def test_get_valid_callable_from_callable():
strat = (lambda: None)
valid = {"doesn't matter": (lambda: None)} # not even touched interally
assert _get_callable(strat, valid)() is None
def test_get_valid_callable_from_string():
strat = "strategy"
valid = {strat: (lambda: None)}
assert _get_callable(strat, valid)() is None