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"""Unit test for KNX/IP base class."""
import pytest
from xknx.exceptions import CouldNotParseKNXIP, IncompleteKNXIPFrame
from xknx.knxip import KNXIPFrame, KNXIPHeader
from xknx.knxip.knxip_enum import KNXIPServiceType
class TestKNXIPFrame:
"""Test class for KNX/IP base class."""
def test_wrong_init(self) -> None:
"""Testing init method with wrong service_type_ident."""
header = KNXIPHeader()
header.service_type_ident = KNXIPServiceType.REMOTE_DIAG_RESPONSE
with pytest.raises(CouldNotParseKNXIP):
# this is not yet implemented in xknx
KNXIPFrame.from_knx(header.to_knx())
def test_double_frame(self) -> None:
"""Test parsing KNX/IP frame from streaming data containing two frames."""
raw = bytes.fromhex(
"06 10 04 20 00 15 04 02 51 00 29 00 bc e0 10 fa"
"09 2d 01 00 80"
"06 10 04 20 00 15 04 02 52 00 29 00 bc e0 10 1f"
"08 2d 01 00 80"
) # both frames have length 21
frame_1, rest_1 = KNXIPFrame.from_knx(raw)
frame_2, _rest_2 = KNXIPFrame.from_knx(rest_1)
assert frame_1.header.total_length == 21
assert frame_2.header.total_length == 21
def test_parsing_too_short_knxip(self) -> None:
"""Test parsing and streaming connection state request KNX/IP packet."""
raw = bytes.fromhex("06 10 02 07 00 10 15 00 08 01 C0 A8 C8 0C C3")
with pytest.raises(IncompleteKNXIPFrame):
KNXIPFrame.from_knx(raw)
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