code: def test_crlf(self):
      src = b'print(ascii("""\r\n"""))\n'
      out = self.check_script_output(src, rb"'\n'")
  
imports: import unittest
  from test.support import script_helper, captured_stdout, requires_subprocess, requires_resource
  from test.support.os_helper import TESTFN, unlink, rmtree
  from test.support.import_helper import unload
  import importlib
  import os
  import sys
  import subprocess
  import tempfile
label_desc: Use image node_id 11 for calling the AbstractSourceEncodingTest obj's underlying member method code with example usage: obj.test_crlf() without return types