Testing decorator with parameter(s)

approve.py

def approve(whitelist):
    """Bind whitelist arg to wrapper"""
    def wrapper(func):
        """Bind old func to guard"""
        def guard(*args, **kwargs):
            """Check if 'name' keyword matches whitelist"""
            name = kwargs.get("name")
            if name in whitelist:
                print(f"=== approved {name}")
                func(*args, **kwargs)
                return True
            else:
                print(f"=== rejected {name}")
                return False
        return guard
    return wrapper


@approve(whitelist={"johndoe", "marydoe"})
def hello(name):
    print(f"Hello {name}")


assert hello(name="johndoe") is True
assert hello(name="marydoe") is True
assert hello(name="foobar") is False