def test_non_existent_S():
e = Ethtool('/usr/sbin/ethtool')
try:
e.ethtool_S('no_such')
except NoSuchDevice:
print "device not found! (yippee)"
else:
assert False
def test_ethtool_S():
e = Ethtool('/usr/sbin/ethtool')
e.ethtool_S('eth0')
print e.S.result
