code: def test_customreplace_encode(self):
      if self.has_iso10646:
          self.skipTest("encoding contains full ISO 10646 map")
  
      from html.entities import codepoint2name
  
      def xmlcharnamereplace(exc):
          if not isinstance(exc, UnicodeEncodeError):
              raise TypeError("don't know how to handle %r" % exc)
          l = []
          for c in exc.object[exc.start : exc.end]:
              if ord(c) in codepoint2name:
                  l.append("&%s;" % codepoint2name[ord(c)])
              else:
                  l.append("&#%d;" % ord(c))
          return ("".join(l), exc.end)
  
      codecs.register_error(
          "test.xmlcharnamereplace", xmlcharnamereplace
      )
  
      if self.xmlcharnametest:
          sin, sout = self.xmlcharnametest
      else:
          sin = "\xab\u211c\xbb = \u2329\u1234\u232a"
          sout = b"&laquo;&real;&raquo; = &lang;&#4660;&rang;"
      self.assertEqual(
          self.encode(sin, "test.xmlcharnamereplace")[0], sout
      )
  
imports: import codecs
  import os
  import re
  import sys
  import unittest
  from http.client import HTTPException
  from test import support
  from io import BytesIO
label_desc: Use image node_id 5 for calling the TestBase obj's underlying member method code with example usage: obj.test_customreplace_encode() and returns: str,  exc