def test_from_knx_unpack_error(self):
"""Test DPT2ByteSigned parsing with unpack error."""
with patch("struct.unpack") as unpack_mock:
unpack_mock.side_effect = struct.error()
with pytest.raises(ConversionError):
DPT2ByteSigned.from_knx((0x01, 0x23))
def test_signed_wrong_value_from_knx(self):
"""Test DPT2ByteSigned parsing with wrong value."""
with pytest.raises(ConversionError):
DPT2ByteSigned.from_knx((0xFF, 0x4E, 0x12))
def test_signed_value_min_value(self):
"""Test DPT2ByteSigned parsing and streaming with null values."""
assert DPT2ByteSigned.to_knx(-20480) == (0xB0, 0x00)
assert DPT2ByteSigned.from_knx((0xB0, 0x00)) == -20480
def test_signed_value_0123(self):
"""Test DPT2ByteSigned parsing and streaming."""
assert DPT2ByteSigned.to_knx(291) == (0x01, 0x23)
assert DPT2ByteSigned.from_knx((0x01, 0x23)) == 291
def test_signed_value_max_value(self):
"""Test DPT2ByteSigned parsing and streaming."""
assert DPT2ByteSigned.to_knx(32767) == (0x7F, 0xFF)
assert DPT2ByteSigned.from_knx((0x7F, 0xFF)) == 32767
