How to use the kobo.django.xmlrpc.decorators.user_passes_test function in kobo

@user_passes_test(methodcaller('has_perm', 'testruns.add_testcaserun'))
def add_cases(request, run_ids, case_ids):
    """Add one or more cases to the selected test runs.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param case_ids: give one or more case IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a case ID.
    :type case_ids: int, str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.
    :rtype: list

    Example::

@user_passes_test(methodcaller('has_perm', 'testruns.delete_testcaserun'))
def remove_cases(request, run_ids, case_ids):
    """Remove one or more cases from the selected test runs.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param case_ids: give one or more case IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a case ID.
    :type case_ids: int, str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.
    :rtype: list

    Example::

@user_passes_test(methodcaller('has_perm', 'testruns.add_testruntag'))
def add_tag(request, run_ids, tags):
    """Add one or more tags to the selected test runs.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param tags: tag name or a list of tag names to remove.
    :type tags: str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.
    :rtype: list

    Example::

        # Add tag 'foobar' to run 1

@user_passes_test(methodcaller('has_perm', 'testruns.delete_tcmsenvrunvaluemap'))
def unlink_env_value(request, run_ids, env_value_ids):
    """Unlink env values to the given runs.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param env_value_ids: give one or more environment value IDs. It could be
        an integer, a string containing comma separated IDs, or a list of int
        each of them is a environment value ID.
    :type env_value_ids: int, str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.
    :rtype: list

    Example::

@user_passes_test(methodcaller('has_perm', 'testruns.change_tcmsenvrunvaluemap'))
def env_value(request, action, run_ids, env_value_ids):
    """
    Add or remove env values to the given runs, function is same as
    link_env_value or unlink_env_value

    :param str action: what action to do, ``add`` or ``remove``.
    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param env_value_ids: give one or more environment value IDs. It could be
        an integer, a string containing comma separated IDs, or a list of int
        each of them is a environment value ID.
    :type env_value_ids: int, str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.

@user_passes_test(methodcaller('has_perm', 'testruns.add_testrun'))
def create(request, values):
    """Creates a new Test Run object and stores it in the database.

    :param dict values: a mapping containing these data to create a test run.

        * plan: (int) **Required** ID of test plan
        * build: (int)/(str) **Required** ID of Build
        * errata_id: (int) optional ID of Errata
        * manager: (int) **Required** ID of run manager
        * summary: (str) **Required**
        * product: (int) **Required** ID of product
        * product_version: (int) **Required** ID of product version
        * default_tester: (int) optional ID of run default tester
        * plan_text_version: (int) optional
        * estimated_time: (str) optional, could be in format ``2h30m30s``, which is recommended or ``HH:MM:SS``.
        * notes: (str) optional

@user_passes_test(methodcaller('has_perm', 'testruns.add_tcmsenvrunvaluemap'))
def link_env_value(request, run_ids, env_value_ids):
    """Link env values to the given runs.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param env_value_ids: give one or more environment value IDs. It could be
        an integer, a string containing comma separated IDs, or a list of int
        each of them is a environment value ID.
    :type env_value_ids: int, str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.
    :rtype: list

    Example::

@user_passes_test(methodcaller('has_perm', 'testruns.add_testruntag'))
def add_tag(request, run_ids, tags):
    """Add one or more tags to the selected test runs.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param tags: tag name or a list of tag names to remove.
    :type tags: str or list
    :return: a list which is empty on success or a list of mappings with
        failure codes if a failure occured.
    :rtype: list

    Example::

        # Add tag 'foobar' to run 1

@user_passes_test(methodcaller('has_perm', 'testruns.delete_testruntag'))
def remove_tag(request, run_ids, tags):
    """Remove a tag from a run.

    :param run_ids: give one or more run IDs. It could be an integer, a
        string containing comma separated IDs, or a list of int each of them is
        a run ID.
    :type run_ids: int, str or list
    :param tags: tag name or a list of tag names to remove.
    :type tags: str or list
    :return: a list which is empty on success.
    :rtype: list

    Example::

        # Remove tag 'foo' from run 1
        >>> TestRun.remove_tag(1, 'foo')

@user_passes_test(methodcaller('has_perm', 'auth.change_user'))
def join(request, username, groupname):
    """Add user to a group specified by name.

    :param str username: user name.
    :param str groupname: group name to add given user name.

    :raise PermissionDenied: if the request has no permission to add a user to
        a group.
    :raise Object.DoesNotExist: if user name or group name does not exist.

    Example::

        User.join('username', 'groupname')
    """
    try:
        user = User.objects.get(username=username)