docstr: Test PyUnicode_GetDefaultEncoding()
docstr_tok: ["Test","PyUnicode_GetDefaultEncoding","(",")"]
code: def test_getdefaultencoding(self):
      """Test PyUnicode_GetDefaultEncoding()"""
      from _testcapi import (
          unicode_getdefaultencoding as getdefaultencoding,
      )
  
      self.assertEqual(getdefaultencoding(), b"utf-8")
  
imports: import unittest
  import sys
  from test import support
  from test.support import import_helper
label_desc: Use image node_id 25 for calling the CAPITest obj's underlying member method code with example usage: obj.test_getdefaultencoding() without return types