def test_parameter_manipulation():
fn = func_signature(a=Varying(), b=Fixed())(_fn)
sig = inspect.signature(fn)
assert 'p' in sig.parameters
def test_values():
fn = func_signature(a=Fixed(), b=Varying(), c=Varying())(_fn)
assert fn([1, 2], a=3) == {'a': 3, 'b': 1, 'c': 2,}