[Python-checkins] python/dist/src/Lib/test test_ioctl.py,NONE,1.1

[mwh@users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1:/tmp/cvs-serv423/Lib/test

Added Files:
	test_ioctl.py 
Log Message:
Fix bug 

[ 555817 ] Flawed fcntl.ioctl implementation.

with my patch that allows for an array to be mutated when passed
as the buffer argument to ioctl() (details complicated by 
backwards compatibility considerations -- read the docs!).


--- NEW FILE: test_ioctl.py ---
import unittest
from 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")

class IoctlTests(unittest.TestCase):
    def test_ioctl(self):
        pgrp = os.getpgrp()
        tty = open("/dev/tty", "r")
        r = fcntl.ioctl(tty, termios.TIOCGPGRP, "    ")
        self.assertEquals(pgrp, struct.unpack("i", r)[0])

    def test_ioctl_mutate(self):
        import array
        buf = array.array('i', [0])
        pgrp = os.getpgrp()
        tty = open("/dev/tty", "r")
        r = fcntl.ioctl(tty, termios.TIOCGPGRP, buf, 1)
        self.assertEquals(r, 0)
        self.assertEquals(pgrp, buf[0])

def test_main():
    run_unittest(IoctlTests)

if __name__ == "__main__":
    test_main()