code: def test_read(self):
      shell = MockShell()
      f = PseudoInputFile(shell, "stdin", "utf-8")
      shell.push(["one\n", "two\n", ""])
      self.assertEqual(f.read(), "one\ntwo\n")
      shell.push(["one\n", "two\n", ""])
      self.assertEqual(f.read(-1), "one\ntwo\n")
      shell.push(["one\n", "two\n", ""])
      self.assertEqual(f.read(None), "one\ntwo\n")
      shell.push(["one\n", "two\n", "three\n", ""])
      self.assertEqual(f.read(2), "on")
      self.assertEqual(f.read(3), "e\nt")
      self.assertEqual(f.read(10), "wo\nthree\n")
  
      shell.push(["one\n", "two\n"])
      self.assertEqual(f.read(0), "")
      self.assertRaises(TypeError, f.read, 1.5)
      self.assertRaises(TypeError, f.read, "1")
      self.assertRaises(TypeError, f.read, 1, 1)
  
imports: import unittest
  import io
  from idlelib.PyShell import PseudoInputFile, PseudoOutputFile
  from test import test_support
label_desc: Use image node_id 3 for calling the PseudeInputFilesTest obj's underlying member method code with example usage: obj.test_read() without return types