1 # Test to see if openpty works. (But don't worry if it isn't available.)

     2 

     3 import os, unittest

     4 from test.test_support import run_unittest, TestSkipped

     5 

     6 if not hasattr(os, "openpty"):

     7     raise TestSkipped, "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, 'Ping!')

    17         self.assertEqual(os.read(master, 1024), 'Ping!')

    18 

    19 def test_main():

    20     run_unittest(OpenptyTest)

    21 

    22 if __name__ == '__main__':

    23     test_main()