def test_decode(self):
encoded_stream = self._from_hex('0A00010203040506070809')
# decode the address
data = decode(encoded_stream)
self.assertIsEncoded(data, '00010203040506070809')
def assertIsExpectedTx(self, payload: Transaction,
transaction_bytes: bytes,
expected_hex_payload: str):
# a payload needs at least one signee
self.assertGreater(len(payload.signers), 0)
# calculate the serial length of the signatures (so that we can extract the payload)
signatures_serial_length = self.EXPECTED_SERIAL_SIGNATURE_LENGTH * len(
payload.signers)
# sanity check
self.assertGreater(len(transaction_bytes), signatures_serial_length)
expected_payload_end = len(
transaction_bytes) - signatures_serial_length
# extract and verify the payload
payload_bytes = transaction_bytes[:expected_payload_end]
self.assertEqual(expected_hex_payload, payload_bytes.hex())
# loop through and verify all the signatures
buffer = io.BytesIO(transaction_bytes[expected_payload_end:])
for signee in payload.signers:
# extract the signature from the stream
signature = bytearray.decode(buffer)
# validate the signature is correct for the payload
self.assertTrue(signee.verify(payload_bytes, signature))