def testPopenCloseFds(self):
r, w = filedes.pipe()
try:
# Create a subprocess that prints and blocks waiting for input
p = Popen("echo ok; read foo", shell=True,
stdin=PIPE, stdout=PIPE, stderr=STDOUT,
close_fds=True)
try:
# Wait for the process to let us know it's alive
ready = p.stdout.read(3)
self.assertEquals(ready, "ok\n")
# Get the list of FDs of the remote process
remote_fds = get_open_fds(p.pid)
# Make sure the read fd persisted, but the write fd was not.
self.assertNotIn(r, remote_fds)
self.assertNotIn(w, remote_fds)
# Now send some output to the remote process to unblock it
p.stdin.write("ok\n")
p.stdin.flush()
# Wait for it to shutdown
self.assertEquals(p.wait(), 0)
finally:
# Popen does not close PIPE fds on process shutdown
# automatically, even if there's no data in it. Since the
# exception context is propagated to the test cases' tearDown,
# the popen's pipes will show up as a leak
del p
finally:
r.close()
w.close()
def testIterateTwice(self):
it = filedes.pipe()
l1 = list(it)
l2 = list(it)
try:
self.assertItemsEqual(l1, l2)
finally:
for fd in l1:
fd.close()
def testIterateTwice(self):
it = filedes.pipe()
l1 = list(it)
l2 = list(it)
try:
self.assertItemsEqual(l1, l2)
finally:
for fd in l1:
fd.close()
def testPipe(self):
import filedes
self.checkSubprocessFDs(filedes.pipe())
def testPipe(self):
import filedes
self.checkSubprocessFDs(filedes.pipe())
def testDup2(self):
r, w = filedes.pipe()
r2 = r.dup(63)
self.dupTestCommon(r, w, r2)
def testPipeConstructor(self):
r, w = filedes.pipe()
self.assertIsInstance(r, LocalFileDescriptor)
self.assertIsInstance(w, LocalFileDescriptor)
r.close()
w.close()
def testDup(self):
r, w = filedes.pipe()
r2 = r.dup()
self.dupTestCommon(r, w, r2)
def testPipeConstructor(self):
r, w = filedes.pipe()
self.assertIsInstance(r, LocalFileDescriptor)
self.assertIsInstance(w, LocalFileDescriptor)
r.close()
w.close()