def test__no_mac_raises_macaddressnotavailable(self):
mock_ioerror = IOError()
mock_ioerror.errno = errno.EOPNOTSUPP
self.patch(detect_module.fcntl, "ioctl").side_effect = mock_ioerror
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# Drive-by test for the strerror() call.
with ExpectedException(MACAddressNotAvailable, ".*not supported.*"):
get_interface_mac(sock, "lo")
def test__invalid_interface_raises_interfacenotfound(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with ExpectedException(InterfaceNotFound):
get_interface_mac(sock, factory.make_unicode_string(size=15))
def test__loopback_has_zero_mac(self):
# It's a lame test, but what other network interfaces can we reliably
# test this on?
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.assertEqual("00:00:00:00:00:00", get_interface_mac(sock, "lo"))