def test_should_build_IPv6Packet_with_ICMP_payload_from_well_know_values_when_to_bytes_method_is_called(self):
# GIVEN
ipv6_packet = IPv6Packet(IPv6Header(source_address="fd00:1234:4555::ff:fe00:1800",
destination_address="ff03::1"),
ICMPv6(ICMPv6Header(128, 0),
ICMPv6EchoBody(0, 2, bytearray([0x80, 0x00, 0xc7, 0xbf, 0x00, 0x00, 0x00, 0x01,
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
0x41, 0x41]))),
[HopByHop(options=[
HopByHopOption(HopByHopOptionHeader(_type=0x6d),
MPLOption(S=1, M=0, V=0, sequence=2, seed_id=bytearray([0x00, 0x18])))
])])
# WHEN
ipv6_packet_bytes = ipv6_packet.to_bytes()
# THEN
expected_ipv6_packet_bytes = bytearray([0x60, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x40,
0xfd, 0x00, 0x12, 0x34, 0x45, 0x55, 0x00, 0x00,
0x00, 0x00, 0x00, 0xff, 0xfe, 0x00, 0x18, 0x00,
0xff, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x3a, 0x00, 0x6d, 0x04, 0x40, 0x02, 0x00, 0x18,
0x80, 0x00, 0x87, 0x12, 0x00, 0x00, 0x00, 0x02,
0x80, 0x00, 0xc7, 0xbf, 0x00, 0x00, 0x00, 0x01,
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
0x41, 0x41])
self.assertEqual(expected_ipv6_packet_bytes, ipv6_packet_bytes)
def test_should_create_bytes_from_HopByHop_when_to_bytes_method_is_called(self):
# GIVEN
next_header = any_next_header()
hop_by_hop_option = any_hop_by_hop_bytes_option()
hdr_ext_len = self._calculate_hdr_ext_len(2 + len(hop_by_hop_option))
hop_by_hop = HopByHop(next_header, [hop_by_hop_option])
# WHEN
data = hop_by_hop.to_bytes()
# THEN
expected_data = bytearray([next_header, hdr_ext_len]) + hop_by_hop_option.to_bytes()
padding_length = self._calculate_required_padding(len(expected_data))
expected_data += self.create_padding(padding_length)
self.assertEqual(expected_data, data)
def test_should_create_bytes_from_HopByHop_when_to_bytes_method_is_called(self):
# GIVEN
next_header = any_next_header()
hop_by_hop_option = any_hop_by_hop_bytes_option()
hdr_ext_len = self._calculate_hdr_ext_len(2 + len(hop_by_hop_option))
hop_by_hop = HopByHop(next_header, [hop_by_hop_option])
# WHEN
data = hop_by_hop.to_bytes()
# THEN
expected_data = bytearray([next_header, hdr_ext_len]) + hop_by_hop_option.to_bytes()
padding_length = self._calculate_required_padding(len(expected_data))
expected_data += self.create_padding(padding_length)
self.assertEqual(expected_data, data)