code: def test_close(self):
      shell = MockShell()
      f = run.StdInputFile(shell, "stdin")
      shell.push(["one\n", "two\n", ""])
      self.assertFalse(f.closed)
      self.assertEqual(f.readline(), "one\n")
      f.close()
      self.assertFalse(f.closed)
      self.assertEqual(f.readline(), "two\n")
      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 StdInputFilesTest obj's underlying member method code with example usage: obj.test_close() without return types