from pyhoff.modbus import _get_bits, _get_words, _from_bits, _from_words def test_get_bits(): data = bytes([0b11101010, 0b11010101]) bit_number = 16 expected = [False, True, False, True, False, True, True, True, True, False, True, False, True, False, True, True] result = _get_bits(data, bit_number) assert result == expected def test_get_words(): data = bytes([0x12, 0x34, 0x56, 0x78]) expected = [0x1234, 0x5678] result = _get_words(data) assert result == expected def test_from_bits(): values = [False, True, False, True, False, True, True, True, True, False, True, False, True, False, True, True] expected = bytes([0b11101010, 0b11010101]) result = _from_bits(values) assert result == expected def test_from_words(): values = [0x1234, 0x5678] expected = bytes([0x12, 0x34, 0x56, 0x78]) result = _from_words(values) assert result == expected