def test_out_point() -> None:
out_point = OutPoint()
assert out_point.tx_id == b"\x00" * 32
assert out_point.vout == 0xFFFFFFFF
assert out_point.hash == int.from_bytes(out_point.tx_id, "big", signed=False)
assert out_point.n == out_point.vout
assert out_point.is_coinbase()
assert out_point == OutPoint.parse(out_point.serialize())
assert out_point == OutPoint.from_dict(out_point.to_dict())
tx_id = "d5b5982254eebca64e4b42a3092a10bfb76ab430455b2bf0cf7c4f7f32db1c2e"
vout = 0
out_point = OutPoint(tx_id, vout)
assert out_point.tx_id.hex() == tx_id
assert out_point.vout == vout
assert out_point.hash == int.from_bytes(out_point.tx_id, "big", signed=False)
assert out_point.n == out_point.vout
assert not out_point.is_coinbase()
assert out_point == OutPoint.parse(out_point.serialize())
assert out_point == OutPoint.from_dict(out_point.to_dict())
def parse(cls: Type["TxIn"],
data: BinaryData,
check_validity: bool = True) -> "TxIn":
stream = bytesio_from_binarydata(data)
prev_out = OutPoint.parse(stream)
script_sig = var_bytes.parse(stream)
sequence = int.from_bytes(stream.read(4),
byteorder="little",
signed=False)
return cls(prev_out, script_sig, sequence, Witness(), check_validity)