def test_from_knx_unpack_error(self):
"""Test DPT2ByteSigned parsing with unpack error."""
with patch('struct.unpack') as unpackMock:
unpackMock.side_effect = struct.error()
with self.assertRaises(ConversionError):
DPT2ByteSigned().from_knx((0x01, 0x23))
def test_to_knx_pack_error(self):
"""Test serializing DPT2ByteSigned with pack error."""
with patch('struct.pack') as packMock:
packMock.side_effect = struct.error()
with self.assertRaises(ConversionError):
DPT2ByteSigned().to_knx(1234)
def test_signed_value_0123(self):
"""Test DPT2ByteSigned parsing and streaming."""
self.assertEqual(DPT2ByteSigned().to_knx(291), (0x01, 0x23))
self.assertEqual(DPT2ByteSigned().from_knx((0x01, 0x23)), 291)
def test_signed_wrong_value_from_knx(self):
"""Test DPT2ByteSigned parsing with wrong value."""
with self.assertRaises(ConversionError):
DPT2ByteSigned().from_knx((0xFF, 0x4E, 0x12))
def test_signed_value_min_value(self):
"""Test DPT2ByteSigned parsing and streaming with null values."""
self.assertEqual(DPT2ByteSigned().to_knx(-20480), (0xB0, 0x00))
self.assertEqual(DPT2ByteSigned().from_knx((0xB0, 0x00)), -20480)
def test_signed_value_max_value(self):
"""Test DPT2ByteSigned parsing and streaming."""
self.assertEqual(DPT2ByteSigned().to_knx(32767), (0x7F, 0xFF))
self.assertEqual(DPT2ByteSigned().from_knx((0x7F, 0xFF)), 32767)
def test_signed_to_knx_exceed_limits(self):
"""Test initialization of DPT2ByteSigned with wrong value (Overflow)."""
with self.assertRaises(ConversionError):
DPT2ByteSigned().to_knx(32768)
def test_signed_assert_min_exceeded(self):
"""Test initialization of DPT2ByteSigned with wrong value (Underflow)."""
with self.assertRaises(ConversionError):
DPT2ByteSigned().to_knx(-32769)
def test_signed_settings(self):
"""Test members of DPT2ByteSigned."""
self.assertEqual(DPT2ByteSigned().value_min, -32768)
self.assertEqual(DPT2ByteSigned().value_max, 32767)