def test_should_convert_HopByHopOptionHeader_to_bytes_when_to_bytes_method_is_called(self):
# GIVEN
_type = any_type()
length = any_length()
hop_by_hop_option_header = HopByHopOptionHeader(_type, length)
# WHEN
data = hop_by_hop_option_header.to_bytes()
# THEN
expected_data = bytearray([_type, length])
self.assertEqual(expected_data, data)
def test_should_convert_HopByHopOptionHeader_to_bytes_when_to_bytes_method_is_called(self):
# GIVEN
_type = any_type()
length = any_length()
hop_by_hop_option_header = HopByHopOptionHeader(_type, length)
# WHEN
data = hop_by_hop_option_header.to_bytes()
# THEN
expected_data = bytearray([_type, length])
self.assertEqual(expected_data, data)
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 any_hop_by_hop_bytes_option_header(length=4):
_type = any_type()
# 0 or 1 means padding, so type have to be higher than 1
while _type <= 1:
_type = any_type()
return HopByHopOptionHeader(_type, length)
def test_should_create_HopByHopOptionHeader_when_to_bytes_method_is_called_with_data(self):
# GIVEN
_type = any_type()
length = any_length()
data = bytearray([_type, length])
# WHEN
option_header = HopByHopOptionHeader.from_bytes(io.BytesIO(data))
# THEN
self.assertEqual(_type, option_header.type)
self.assertEqual(length, option_header.length)
def test_should_return_proper_length_when_len_is_called_with_HopByHopOptionHeader_object(self):
# GIVEN
_type = any_type()
length = any_length()
option_header = HopByHopOptionHeader(_type, length)
# WHEN
option_header_length = len(option_header)
# THEN
expected_option_header_length = 2
self.assertEqual(expected_option_header_length, option_header_length)
def test_should_create_HopByHopOptionHeader_when_to_bytes_method_is_called_with_data(self):
# GIVEN
_type = any_type()
length = any_length()
data = bytearray([_type, length])
# WHEN
option_header = HopByHopOptionHeader.from_bytes(io.BytesIO(data))
# THEN
self.assertEqual(_type, option_header.type)
self.assertEqual(length, option_header.length)
def any_hop_by_hop_bytes_option_header(length=4):
return HopByHopOptionHeader(any_type(), length)
