Method create_self_transfer

test/functional/test_framework/wallet.py:354–391

Create and return a tx with the specified fee. If fee is 0, use fee_rate, where the resulting fee may be exact or at most one satoshi higher than needed.

(
            self,
            *,
            fee_rate=Decimal("0.003"),
            fee=Decimal("0"),
            utxo_to_spend=None,
            target_vsize=0,
            confirmed_only=False,
            **kwargs,
    )

        }

    def create_self_transfer(
            self,
            *,
            fee_rate=Decimal("0.003"),
            fee=Decimal("0"),
            utxo_to_spend=None,
            target_vsize=0,
            confirmed_only=False,
            **kwargs,
    ):
        """Create and return a tx with the specified fee. If fee is 0, use fee_rate, where the resulting fee may be exact or at most one satoshi higher than needed."""
        utxo_to_spend = utxo_to_spend or self.get_utxo(confirmed_only=confirmed_only)
        assert fee_rate >= 0
        assert fee >= 0
        # calculate fee
        if self._mode in (MiniWalletMode.RAW_OP_TRUE, MiniWalletMode.ADDRESS_OP_TRUE):
            vsize = Decimal(104)  # anyone-can-spend
        elif self._mode == MiniWalletMode.RAW_P2PK:
            vsize = Decimal(168)  # P2PK (73 bytes scriptSig + 35 bytes scriptPubKey + 60 bytes other)
        else:
            assert False
        if target_vsize and not fee:  # respect fee_rate if target vsize is passed
            fee = get_fee(target_vsize, fee_rate)
        send_value = utxo_to_spend["value"] - (fee or (fee_rate * vsize / 1000))
        if send_value <= 0:
            raise RuntimeError(f"UTXO value {utxo_to_spend['value']} is too small to cover fees {(fee or (fee_rate * vsize / 1000))}")
        # create tx
        tx = self.create_self_transfer_multi(
            utxos_to_spend=[utxo_to_spend],
            amount_per_output=int(COIN * send_value),
            target_vsize=target_vsize,
            **kwargs,
        )
        if not target_vsize:
            assert_equal(tx["tx"].get_vsize(), vsize)
        tx["new_utxo"] = tx.pop("new_utxos")[0]

        return tx

    def sendrawtransaction(self, *, from_node, tx_hex, maxfeerate=0, **kwargs):
        txid = from_node.sendrawtransaction(hexstring=tx_hex, maxfeerate=maxfeerate, **kwargs)