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Merge #19597: test: test decodepsbt fee calculation (count input value only once per UTXO)

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82dee87933ed0714976ff4eb9657acfc13c6de84 test: test decodepsbt fee calculation (count input value only once per UTXO) (Sebastian Falbesoner)

Pull request description:

  Fixes #19523, adding a simple test to `rpc_psbt.py` that checks that the decodepsbt fee matches the one given by the wallet (`walletcreatefundedpsbt`). This is in particular important for PSBTs with segwit inputs that have both a witness- and a non-witness-UTXO type set.

  Example test run after reverting commit 75122780e2c46505d977e24c5612dfa9442ab754 ("Increment input value sum only once per UTXO in decodepsbt"):

  ```
  $ test/functional/rpc_psbt.py
  2020-07-26T11:31:44.862000Z TestFramework (INFO): Initializing test directory /tmp/bitcoin_func_test__sutcd4y
  20.00007580
  2020-07-26T11:31:47.073000Z TestFramework (ERROR): Assertion failed
  Traceback (most recent call last):
    File "/home/honeybadger/buidl/bitcoin_thestack/test/functional/test_framework/test_framework.py", line 118, in main
      self.run_test()
    File "test/functional/rpc_psbt.py", line 166, in run_test
      assert_equal(decoded['fee'], created_psbt['fee'])
    File "/home/honeybadger/buidl/bitcoin_thestack/test/functional/test_framework/util.py", line 49, in assert_equal
      raise AssertionError("not(%s)" % " == ".join(str(arg) for arg in (thing1, thing2) + args))
  AssertionError: not(20.00007580 == 0.00007580)
  2020-07-26T11:31:47.125000Z TestFramework (INFO): Stopping nodes
  ......
  ```

ACKs for top commit:
  achow101:
    ACK 82dee87933ed0714976ff4eb9657acfc13c6de84

Tree-SHA512: 296b8a701f851d482ef6200c6cbf0cf0257a79a828ac6dbc39b05d8c2d839c6fdb9d3f5a084015295cfa3eac7c11faa2f2d52e619c11627b04c75150eead8330
This commit is contained in:
MarcoFalke 2020-07-30 09:46:12 +02:00 committed by pasta
parent bebd915859
commit 7048cb74ba
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GPG Key ID: 52527BEDABE87984
1 changed files with 4 additions and 2 deletions
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test/functional/rpc_psbt.py
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@ -75,11 +75,13 @@ class PSBTTest(BitcoinTestFramework):
p2pkh_pos = out['n']
# spend single key from node 1
rawtx = self.nodes[1].walletcreatefundedpsbt([{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():9.99})['psbt']
walletprocesspsbt_out = self.nodes[1].walletprocesspsbt(rawtx)
created_psbt = self.nodes[1].walletcreatefundedpsbt([{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():9.99})
walletprocesspsbt_out = self.nodes[1].walletprocesspsbt(created_psbt['psbt'])
# Make sure it has both types of UTXOs
decoded = self.nodes[1].decodepsbt(walletprocesspsbt_out['psbt'])
assert 'non_witness_utxo' in decoded['inputs'][0]
# Check decodepsbt fee calculation (input values shall only be counted once per UTXO)
assert_equal(decoded['fee'], created_psbt['fee'])
assert_equal(walletprocesspsbt_out['complete'], True)
self.nodes[1].sendrawtransaction(self.nodes[1].finalizepsbt(walletprocesspsbt_out['psbt'])['hex'])