def write(self, writer: BitStreamWriter, value: int) -> None:
"""
Writes signed fixed integer Zserio type to the bit stream.
:param writer: Bit stream where to write.
:param value: Signed fixed integer Zserio type to write.
"""
writer.writeSignedBits(value, self._numBits)
def testWriteSignedBits(self):
writer = BitStreamWriter()
writer.writeSignedBits(0, 1)
writer.writeSignedBits(-1, 2)
writer.writeSignedBits(-1, 5)
self.assertEqual(b'\x7f', writer.getByteArray())
self.assertEqual(8, writer.getBitPosition())
writer.writeSignedBits(-1, 1)
writer.writeSignedBits(-1, 7)
self.assertEqual(b'\x7f\xff', writer.getByteArray())
self.assertEqual(16, writer.getBitPosition())
with self.assertRaises(PythonRuntimeException):
writer.writeSignedBits(1, 0) # zero bits!
with self.assertRaises(PythonRuntimeException):
writer.writeSignedBits(1, 1) # above the upper bound
with self.assertRaises(PythonRuntimeException):
writer.writeSignedBits(128, 8) # above the upper bound
with self.assertRaises(PythonRuntimeException):
writer.writeSignedBits(-129, 8) # below the lower bound
