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"""Unit test for KNX/IP SessionResponse objects."""
from xknx.knxip import KNXIPFrame, SessionResponse
class TestKNXIPSessionResponse:
"""Test class for KNX/IP SessionResponse objects."""
def test_session_response(self) -> None:
"""Test parsing and streaming session response KNX/IP packet."""
public_key = bytes.fromhex(
"bd f0 99 90 99 23 14 3e" # Diffie-Hellman Server Public Value Y
"f0 a5 de 0b 3b e3 68 7b"
"c5 bd 3c f5 f9 e6 f9 01"
"69 9c d8 70 ec 1f f8 24"
)
message_authentication_code = bytes.fromhex(
"a9 22 50 5a aa 43 61 63" # Message Authentication Code
"57 0b d5 49 4c 2d f2 a3"
)
raw = (
bytes.fromhex(
"06 10 09 52 00 38" # KNXnet/IP header
"00 01" # Secure Session Identifier
)
+ public_key
+ message_authentication_code
)
knxipframe, _ = KNXIPFrame.from_knx(raw)
assert isinstance(knxipframe.body, SessionResponse)
assert knxipframe.body.secure_session_id == 1
assert knxipframe.body.ecdh_server_public_key == public_key
assert (
knxipframe.body.message_authentication_code == message_authentication_code
)
assert knxipframe.to_knx() == raw
session_response = SessionResponse(
secure_session_id=1,
ecdh_server_public_key=public_key,
message_authentication_code=message_authentication_code,
)
knxipframe2 = KNXIPFrame.init_from_body(session_response)
assert knxipframe2.to_knx() == raw
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