code: def test_encode_truefalse(self):
      self.assertEqual(
          json.dumps({True: False, False: True}, sort_keys=True),
          '{"false": true, "true": false}',
      )
      self.assertEqual(
          json.dumps(
              {
                  2: 3.0,
                  4.0: long_type(5),
                  False: 1,
                  long_type(6): True,
                  "7": 0,
              },
              sort_keys=True,
          ),
          '{"2": 3.0, "4.0": 5, "6": true, "7": 0, "false": 1}',
      )
  
imports: from unittest import TestCase
  from simplejson.compat import StringIO, long_type, b, binary_type, text_type, PY3
  import simplejson
label_desc: Use image node_id 5 for calling the TestDump obj's underlying member method code with example usage: obj.test_encode_truefalse() without return types