def test_to_wire(self):
opcode, blockn = (ACKPacket.opcode, 12)
raw_data = struct.pack('!HH', opcode, blockn)
packet = ACKPacket(blockn)
self.assertEqual(packet.to_wire(), raw_data)
def test_from_wire_bad_input(self):
raw_data = 'b'.encode()
with self.assertRaises(PayloadParseError):
ACKPacket.from_wire(raw_data)
