code: def test_misc(self):
      shell = MockShell()
      f = run.StdInputFile(shell, "stdin")
      self.assertIsInstance(f, io.TextIOBase)
      self.assertEqual(f.encoding, "utf-8")
      self.assertEqual(f.errors, "strict")
      self.assertIsNone(f.newlines)
      self.assertEqual(f.name, "<stdin>")
      self.assertFalse(f.closed)
      self.assertTrue(f.isatty())
      self.assertTrue(f.readable())
      self.assertFalse(f.writable())
      self.assertFalse(f.seekable())
  
imports: from idlelib import run
  import io
  import sys
  from test.support import captured_output, captured_stderr
  import unittest
  from unittest import mock
  import idlelib
  from idlelib.idle_test.mock_idle import Func
label_desc: Use image node_id 1 for calling the StdInputFilesTest obj's underlying member method code with example usage: obj.test_misc() without return types