code: def test_trims_trailing_newline(self):
      input = StringIO("test\n")
      self.assertEqual("test", getpass._raw_input(input=input))
  
imports: import getpass
  import os
  import unittest
  from io import BytesIO, StringIO, TextIOWrapper
  from unittest import mock
  from test import support
label_desc: Use image node_id 6 for calling the GetpassRawinputTest obj's underlying member method code with example usage: obj.test_trims_trailing_newline() without return types