code: def test_category(self):
      self.assertEqual(self.db.category("\uFFFE"), "Cn")
      self.assertEqual(self.db.category("a"), "Ll")
      self.assertEqual(self.db.category("A"), "Lu")
      self.assertEqual(self.db.category("\U00020000"), "Lo")
      self.assertEqual(self.db.category("\U0001012A"), "No")
  
      self.assertRaises(TypeError, self.db.category)
      self.assertRaises(TypeError, self.db.category, "xx")
  
imports: import hashlib
  from http.client import HTTPException
  import sys
  import unicodedata
  import unittest
  from test.support import open_urlresource, requires_resource, script_helper, cpython_only, check_disallow_instantiation
label_desc: Use image node_id 8 for calling the UnicodeFunctionsTest obj's underlying member method code with example usage: obj.test_category() without return types