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#!/usr/bin/env python
# vim:ts=4:sw=4:et:ai:sts=4
import nemu, nemu.environ, test_util
import os, signal, subprocess, sys, time
import unittest
class TestNode(unittest.TestCase):
@test_util.skipUnless(os.getuid() == 0, "Test requires root privileges")
def test_node(self):
node = nemu.Node()
self.failIfEqual(node.pid, os.getpid())
self.failIfEqual(node.pid, None)
# check if it really exists
os.kill(node.pid, 0)
nodes = nemu.get_nodes()
self.assertEquals(nodes, [node])
self.assertTrue(node.get_interface("lo").up)
@test_util.skip("Not implemented")
def test_detect_fork(self):
# Test that nemu recognises a fork
chld = os.fork()
if chld == 0:
if len(nemu.get_nodes()) == 0:
os._exit(0)
os._exit(1)
(pid, exitcode) = os.waitpid(chld, 0)
self.assertEquals(exitcode, 0, "Node does not recognise forks")
@test_util.skipUnless(os.getuid() == 0, "Test requires root privileges")
def test_cleanup(self):
def create_stuff():
a = nemu.Node()
b = nemu.Node()
ifa = a.add_if()
ifb = b.add_if()
switch = nemu.Switch()
switch.connect(ifa)
switch.connect(ifb)
# Test automatic destruction
orig_devs = len(test_util.get_devs())
create_stuff()
self.assertEquals(nemu.get_nodes(), [])
self.assertEquals(orig_devs, len(test_util.get_devs()))
# Test at_exit hooks
orig_devs = len(test_util.get_devs())
chld = os.fork()
if chld == 0:
# TODO: not implemented.
#nemu.set_cleanup_hooks(on_exit = True, on_signals = [])
create_stuff()
os._exit(0)
os.waitpid(chld, 0)
self.assertEquals(orig_devs, len(test_util.get_devs()))
# Test signal hooks
orig_devs = len(test_util.get_devs())
chld = os.fork()
if chld == 0:
# TODO: not implemented.
#nemu.set_cleanup_hooks(on_exit = False,
# on_signals = [signal.SIGTERM])
create_stuff()
while True:
time.sleep(10)
os.kill(chld, signal.SIGTERM)
os.waitpid(chld, 0)
self.assertEquals(orig_devs, len(test_util.get_devs()))
if __name__ == '__main__':
unittest.main()
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