def test_your_discr_0_when_init(valid_data):
"""Test whether your_disc being 0 when in init state raises an
exception """
valid_data['state'] = 2
valid_data['your_discr'] = 0
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def valid_packet():
"""Valid sample packet"""
data = {
'version': 1,
'diag': 0,
'state': 0,
'poll': 0,
'final': 0,
'control_plane_independent': 0,
'authentication_present': 0,
'demand_mode': 0,
'multipoint': 0,
'detect_mult': 1,
'length': 24,
'my_discr': 1,
'your_discr': 0,
'desired_min_tx_interval': 50000,
'required_min_rx_interval': 50000,
'required_min_echo_rx_interval': 0
}
return Packet(bitstring.pack(PACKET_FORMAT, **data), '127.0.0.1')
def test_multipoint(valid_data):
"""Test whether setting the multipoint bit raises an exception"""
valid_data['multipoint'] = 1
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def test_length_25(valid_data):
"""Test whether length beyond packet size raises exception"""
valid_data['length'] = 25
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def test_length_0(valid_data):
"""Test whether no length set raises an exception"""
valid_data['length'] = 0
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def test_length_23(valid_data):
"""Test whether too short length raises an exception"""
valid_data['length'] = 23
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def test_protocol_version_2(valid_data):
"""Test whether version 2 raises an exception"""
valid_data['version'] = 2
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def test_packet_too_short(valid_data):
"""Test whether version 0 raises an exception"""
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT_TOO_SHORT, **valid_data),
'127.0.0.1')
def test_valid_packet(valid_data):
"""Test whether a valid packet raises no exceptions"""
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')
def test_my_discr_0(valid_data):
"""Test whether leaving the my_discr empty raises an exception"""
valid_data['my_discr'] = 0
with pytest.raises(IOError):
Packet(bitstring.pack(PACKET_FORMAT, **valid_data), '127.0.0.1')