How to pass/mock the admin_required decorator in gae?

class Generator(Resource):

    @admin_required
    def get(self):
       pass

If I add the @admin_required decorator on my view, the unit test start failing, with the message:

RuntimeError: working outside of request context

Is there a way to mock it or bypass it for unit tests?

Here is the decorator:

def admin_required(func):
    """Requires App Engine admin credentials"""
    @wraps(func)
    def decorated_view(*args, **kwargs):
        if users.get_current_user():
            if not users.is_current_user_admin():
                abort(401)  # Unauthorized
            return func(*args, **kwargs)
        return redirect(users.create_login_url(request.url))
    return decorated_view