message: test: gettxoutproof duplicate txid
diff: @@ -79,6 +79,8 @@ class MerkleBlockTest(BitcoinTestFramework):
  assert_raises_rpc_error(-5, "Not all transactions found in specified or retrieved block", self.nodes[0].gettxoutproof, [txid1, txid3])
  # Test empty list
  assert_raises_rpc_error(-5, "Transaction not yet in block", self.nodes[0].gettxoutproof, [])
  + # Test duplicate txid
  + assert_raises_rpc_error(-8, 'Invalid parameter, duplicated txid', self.nodes[0].gettxoutproof, [txid1, txid1])
  # Now we'll try tweaking a proof.
  proof = self.nodes[1].gettxoutproof([txid1, txid2])
  