text: from __future__ import absolute_import, division, print_function
  
  import telnyx
  
  
  class TestAvailablePhoneNumber(object):
      def test_is_listable(self, request_mock):
          resources = telnyx.AvailablePhoneNumber.list(
              filter={
                  "limit": 1,
                  "features": ["sms", "mms"],
                  "phone_number": {"contains": "555"},
              }
          )
          request_mock.assert_requested("get", "/v2/available_phone_numbers")
          assert isinstance(resources.data, list)
          assert len(resources.data) == 1
          assert isinstance(resources.data[0], telnyx.AvailablePhoneNumber)
  