def test_fd_count(self):
# We cannot test the absolute value of fd_count(): on old Linux
# kernel or glibc versions, os.urandom() keeps a FD open on
# /dev/urandom device and Python has 4 FD opens instead of 3.
start = os_helper.fd_count()
fd = os.open(__file__, os.O_RDONLY)
try:
more = os_helper.fd_count()
finally:
os.close(fd)
self.assertEqual(more - start, 1)
def test_fd_count(self):
# We cannot test the absolute value of fd_count(): on old Linux
# kernel or glibc versions, os.urandom() keeps a FD open on
# /dev/urandom device and Python has 4 FD opens instead of 3.
# Test is unstable on Emscripten. The platform starts and stops
# background threads that use pipes and epoll fds.
start = os_helper.fd_count()
fd = os.open(__file__, os.O_RDONLY)
try:
more = os_helper.fd_count()
finally:
os.close(fd)
self.assertEqual(more - start, 1)