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authorSebastian Falbesoner <sebastian.falbesoner@gmail.com>2021-09-24 01:01:52 +0200
committerSebastian Falbesoner <sebastian.falbesoner@gmail.com>2021-09-27 13:55:25 +0200
commitaa26797f69e6ed10efcad9fb07be7f5b3b0ee513 (patch)
tree64e9d31f71165015a5d6c87dd2ff13dd7c6fb628 /test/functional/test_framework/wallet.py
parent632be5514c3161dfdd8730af104f38c27922b855 (diff)
test: MiniWallet: add `send_to` method to create arbitrary txouts
With this new method, outputs to an arbitrary scriptPubKey/amount can be created. Note that the implementation was already present in the test feature_rbf.py and is just moved to the MiniWallet interface, in order to enable other tests to also use it.
Diffstat (limited to 'test/functional/test_framework/wallet.py')
-rw-r--r--test/functional/test_framework/wallet.py19
1 files changed, 19 insertions, 0 deletions
diff --git a/test/functional/test_framework/wallet.py b/test/functional/test_framework/wallet.py
index cea59c6d69..0fa31e68b6 100644
--- a/test/functional/test_framework/wallet.py
+++ b/test/functional/test_framework/wallet.py
@@ -146,6 +146,25 @@ class MiniWallet:
self.sendrawtransaction(from_node=kwargs['from_node'], tx_hex=tx['hex'])
return tx
+ def send_to(self, *, from_node, scriptPubKey, amount, fee=1000):
+ """
+ Create and send a tx with an output to a given scriptPubKey/amount,
+ plus a change output to our internal address. To keep things simple, a
+ fixed fee given in Satoshi is used.
+
+ Note that this method fails if there is no single internal utxo
+ available that can cover the cost for the amount and the fixed fee
+ (the utxo with the largest value is taken).
+
+ Returns a tuple (txid, n) referring to the created external utxo outpoint.
+ """
+ tx = self.create_self_transfer(from_node=from_node, fee_rate=0, mempool_valid=False)['tx']
+ assert_greater_than_or_equal(tx.vout[0].nValue, amount + fee)
+ tx.vout[0].nValue -= (amount + fee) # change output -> MiniWallet
+ tx.vout.append(CTxOut(amount, scriptPubKey)) # arbitrary output -> to be returned
+ txid = self.sendrawtransaction(from_node=from_node, tx_hex=tx.serialize().hex())
+ return txid, 1
+
def create_self_transfer(self, *, fee_rate=Decimal("0.003"), from_node, utxo_to_spend=None, mempool_valid=True, locktime=0, sequence=0):
"""Create and return a tx with the specified fee_rate. Fee may be exact or at most one satoshi higher than needed."""
self._utxos = sorted(self._utxos, key=lambda k: k['value'])