def readS8(self, register):
        result = self.readU8(register)
        if result > 127:
            result -= 256
        return result
Test media player with children and master state.
dataset/ETHPy150Open adafruit/Adafruit_Python_GPIO/Adafruit_GPIO/I2C.py/Device.readS8--crossover with--dataset/ETHPy150Open home-assistant/home-assistant/tests/components/media_player/test_universal.py/TestMediaPlayer.test_state_with_children_and_attrs