How to use the imapclient.exceptions.InvalidCriteriaError function in IMAPClient

def test_None(self):
        self.assertRaises(InvalidCriteriaError, _normalise_search_criteria, None, None)

def test_nested_empty(self):
        self.assertRaises(InvalidCriteriaError, self.client.search, [[]])

def test_empty(self):
        self.assertRaises(InvalidCriteriaError, _normalise_search_criteria, '', None)

def _normalise_search_criteria(criteria, charset=None):
    if not criteria:
        raise exceptions.InvalidCriteriaError('no criteria specified')
    if not charset:
        charset = 'us-ascii'

    if isinstance(criteria, (text_type, binary_type)):
        return [to_bytes(criteria, charset)]

    out = []
    for item in criteria:
        if isinstance(item, int):
            out.append(str(item).encode('ascii'))
        elif isinstance(item, (datetime, date)):
            out.append(format_criteria_date(item))
        elif isinstance(item, (list, tuple)):
            # Process nested criteria list and wrap in parens.
            inner = _normalise_search_criteria(item)
            inner[0] = b'(' + inner[0]

def _search(self, criteria, charset):
        args = []
        if charset:
            args.extend([b'CHARSET', to_bytes(charset)])
        args.extend(_normalise_search_criteria(criteria, charset))

        try:
            data = self._raw_command_untagged(b'SEARCH', args)
        except imaplib.IMAP4.error as e:
            # Make BAD IMAP responses easier to understand to the user, with a link to the docs
            m = re.match(r'SEARCH command error: BAD \[(.+)\]', str(e))
            if m:
                raise exceptions.InvalidCriteriaError(
                    '{original_msg}\n\n'
                    'This error may have been caused by a syntax error in the criteria: '
                    '{criteria}\nPlease refer to the documentation for more information '
                    'about search criteria syntax..\n'
                    'https://imapclient.readthedocs.io/en/master/#imapclient.IMAPClient.search'
                    .format(
                        original_msg=m.group(1),
                        criteria='"%s"' % criteria if not isinstance(criteria, list) else criteria
                    )
                )

            # If the exception is not from a BAD IMAP response, re-raise as-is
            raise

        return parse_message_list(data)