Showing content from http://svn.python.org/projects/python/branches/ctypes-branch/Lib/test/test_ioctl.py below:
import unittest from test.test_support import TestSkipped, run_unittest import os, struct try: import fcntl, termios except ImportError: raise TestSkipped("No fcntl or termios module") if not hasattr(termios,'TIOCGPGRP'): raise TestSkipped("termios module doesn't have TIOCGPGRP") try: tty = open("/dev/tty", "r") tty.close() except IOError: raise TestSkipped("Unable to open /dev/tty") class IoctlTests(unittest.TestCase): def test_ioctl(self): # If this process has been put into the background, TIOCGPGRP returns # the session ID instead of the process group id. ids = (os.getpgrp(), os.getsid(0)) tty = open("/dev/tty", "r") r = fcntl.ioctl(tty, termios.TIOCGPGRP, " ") rpgrp = struct.unpack("i", r)[0] self.assert_(rpgrp in ids, "%s not in %s" % (rpgrp, ids)) def test_ioctl_mutate(self): import array buf = array.array('i', [0]) ids = (os.getpgrp(), os.getsid(0)) tty = open("/dev/tty", "r") r = fcntl.ioctl(tty, termios.TIOCGPGRP, buf, 1) rpgrp = buf[0] self.assertEquals(r, 0) self.assert_(rpgrp in ids, "%s not in %s" % (rpgrp, ids)) def test_main(): run_unittest(IoctlTests) if __name__ == "__main__": test_main()
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