@staticmethod<EOL><INDENT>def __message(expected_row_count, actual_row_count, query):<DEDENT>
query = query.strip()<EOL>message = '<STR_LIT>'<EOL>message += os.linesep<EOL>message += '<STR_LIT>'.format(expected_row_count)<EOL>message += os.linesep<EOL>message += '<STR_LIT>'.format(actual_row_count)<EOL>message += os.linesep<EOL>message += '<STR_LIT>'<EOL>message += os.linesep if os.linesep in query else '<STR_LIT:U+0020>'<EOL>message += query<EOL>return message<EOL>
Composes the exception message.

:param str expected_row_count: The expected row count.
:param int actual_row_count: The actual row count.
:param str query: The query.

:rtype: str