def METHOD_NAME(self, FormClass, valid_dict, invalid_dict, user=None):
    """
    Helper method to create a valid and invalid form of a certain form class.
    Some forms require the user object
    """
    if user:
        self.valid_form = FormClass(user=user, data=valid_dict)
        self.invalid_form = FormClass(user=user, data=invalid_dict)
    else:
        self.valid_form = FormClass(data=valid_dict)
        self.invalid_form = FormClass(data=invalid_dict)