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

import os

from test.test_support import verbose, TestFailed, TestSkipped

try:

    if verbose:

        print "Calling os.openpty()"

    master, slave = os.openpty()

    if verbose:

        print "(master, slave) = (%d, %d)"%(master, slave)

except AttributeError:

    raise TestSkipped, "No openpty() available."

if not os.isatty(slave):

    raise TestFailed, "Slave-end of pty is not a terminal."

os.write(slave, 'Ping!')

print os.read(master, 1024)