Silenced OptionParser deprecation warning in a test.

import os

import sys

import warnings

from django.core import management

from django.core.management import CommandError

from django.core.management.utils import find_command, popen_wrapper

from django.test import SimpleTestCase

from django.utils import translation

from django.utils.deprecation import RemovedInDjango20Warning

from django.utils.six import StringIO

        optparse should be supported during Django 1.8/1.9 releases.

        """

        out = StringIO()

        with warnings.catch_warnings():

            warnings.filterwarnings("ignore", category=RemovedInDjango20Warning)

            management.call_command('optparse_cmd', stdout=out)

        self.assertEqual(out.getvalue(), "All right, let's dance Rock'n'Roll.\n")