def test_to_knx_pack_error(self):
"""Test serializing DPT2ByteSigned with pack error."""
with patch("struct.pack") as pack_mock:
pack_mock.side_effect = struct.error()
with pytest.raises(ConversionError):
DPT2ByteSigned.to_knx(1234)
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_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_max_value(self):
"""Test DPT2ByteSigned parsing and streaming."""
assert DPT2ByteSigned.to_knx(32767) == (0x7F, 0xFF)
assert DPT2ByteSigned.from_knx((0x7F, 0xFF)) == 32767
def test_signed_to_knx_exceed_limits(self):
"""Test initialization of DPT2ByteSigned with wrong value (Overflow)."""
with pytest.raises(ConversionError):
DPT2ByteSigned.to_knx(32768)
def test_signed_assert_min_exceeded(self):
"""Test initialization of DPT2ByteSigned with wrong value (Underflow)."""
with pytest.raises(ConversionError):
DPT2ByteSigned.to_knx(-32769)