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"""Unit test for KNX/IP ConnectionStateResponses."""
import pytest
from xknx.exceptions import CouldNotParseKNXIP
from xknx.knxip import ConnectionStateResponse, ErrorCode, KNXIPFrame
class TestKNXIPConnectionStateResponse:
"""Test class for KNX/IP ConnectionStateResponses."""
def test_disconnect_response(self) -> None:
"""Test parsing and streaming connection state response KNX/IP packet."""
raw = bytes((0x06, 0x10, 0x02, 0x08, 0x00, 0x08, 0x15, 0x21))
knxipframe, _ = KNXIPFrame.from_knx(raw)
assert isinstance(knxipframe.body, ConnectionStateResponse)
assert knxipframe.body.communication_channel_id == 21
assert knxipframe.body.status_code == ErrorCode.E_CONNECTION_ID
connectionstate_response = ConnectionStateResponse(
communication_channel_id=21,
status_code=ErrorCode.E_CONNECTION_ID,
)
knxipframe2 = KNXIPFrame.init_from_body(connectionstate_response)
assert knxipframe2.to_knx() == raw
def test_from_knx_wrong_header(self) -> None:
"""Test parsing and streaming wrong ConnectionStateResponse (wrong header length)."""
raw = bytes((0x06, 0x10, 0x02, 0x08, 0x00, 0x08, 0x15))
with pytest.raises(CouldNotParseKNXIP):
KNXIPFrame.from_knx(raw)
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