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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()