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test: bugfix: Actually pick largest utxo

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MarcoFalke 2020-09-09 10:07:05 +02:00
parent 564e1ab0f3
commit fa65a11d0c
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1 changed files with 2 additions and 2 deletions
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4
test/functional/test_framework/wallet.py
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@ -42,12 +42,12 @@ class MiniWallet:
def send_self_transfer(self, *, fee_rate, from_node):
"""Create and send 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'])
self._utxos = sorted(self._utxos, key=lambda k: k['value'])
largest_utxo = self._utxos.pop() # Pick the largest utxo and hope it covers the fee
vsize = Decimal(96)
send_value = satoshi_round(largest_utxo['value'] - fee_rate * (vsize / 1000))
fee = largest_utxo['value'] - send_value
assert (send_value > 0)
assert send_value > 0
tx = CTransaction()
tx.vin = [CTxIn(COutPoint(int(largest_utxo['txid'], 16), largest_utxo['vout']))]