code: def test_close(self):
      shell = MockShell()
      f = run.StdOutputFile(shell, "stdout")
      self.assertFalse(f.closed)
      f.write("test")
      f.close()
      self.assertTrue(f.closed)
      self.assertRaises(ValueError, f.write, "x")
      self.assertEqual(shell.written, [("test", "stdout")])
      f.close()
      self.assertRaises(TypeError, f.close, 1)
  
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 6 for calling the StdOutputFilesTest obj's underlying member method code with example usage: obj.test_close() without return types