Lib/test/test_openpty.py

   1 # Test to see if openpty works. (But don't worry if it isn't available.)
   2
   3 import os, unittest
   4 from test.support import run_unittest
   5
   6 if not hasattr(os, "openpty"):
   7     raise unittest.SkipTest("No openpty() available.")
   8
   9
  10 class OpenptyTest(unittest.TestCase):
  11     def test(self):
  12         master, slave = os.openpty()
  13         if not os.isatty(slave):
  14             self.fail("Slave-end of pty is not a terminal.")
  15
  16         os.write(slave, b'Ping!')
  17         self.assertEqual(os.read(master, 1024), b'Ping!')
  18
  19 def test_main():
  20     run_unittest(OpenptyTest)
  21
  22 if __name__ == '__main__':
  23     test_main()