code: def test_rfc_2822(self):
      assert (
          self.formatter.format(self.datetime, FORMAT_RFC2822)
          == "Thu, 25 Dec 1975 14:15:16 -0500"
      )
  
imports: from datetime import datetime
  import pytest
  import pytz
  from dateutil import tz
  from arrow import FORMAT_ATOM, FORMAT_COOKIE, FORMAT_RFC822, FORMAT_RFC850, FORMAT_RFC1036, FORMAT_RFC1123, FORMAT_RFC2822, FORMAT_RFC3339, FORMAT_RSS, FORMAT_W3C
  from .utils import make_full_tz_list
label_desc: Use image node_id 7 for calling the TestFormatterBuiltinFormats obj's underlying member method code with example usage: obj.test_rfc_2822() without return types