test/functional/merkle_blocks.py

   1 #!/usr/bin/env python3
   2 # Copyright (c) 2014-2016 The Bitcoin Core developers
   3 # Distributed under the MIT software license, see the accompanying
   4 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5 """Test gettxoutproof and verifytxoutproof RPCs."""
   6
   7 from test_framework.test_framework import BitcoinTestFramework
   8 from test_framework.util import *
   9
  10 class MerkleBlockTest(BitcoinTestFramework):
  11     def set_test_params(self):
  12         self.num_nodes = 4
  13         self.setup_clean_chain = True
  14         # Nodes 0/1 are "wallet" nodes, Nodes 2/3 are used for testing
  15         self.extra_args = [[], [], [], ["-txindex"]]
  16
  17     def setup_network(self):
  18         self.setup_nodes()
  19         connect_nodes(self.nodes[0], 1)
  20         connect_nodes(self.nodes[0], 2)
  21         connect_nodes(self.nodes[0], 3)
  22
  23         self.sync_all()
  24
  25     def run_test(self):
  26         self.log.info("Mining blocks...")
  27         self.nodes[0].generate(105)
  28         self.sync_all()
  29
  30         chain_height = self.nodes[1].getblockcount()
  31         assert_equal(chain_height, 105)
  32         assert_equal(self.nodes[1].getbalance(), 0)
  33         assert_equal(self.nodes[2].getbalance(), 0)
  34
  35         node0utxos = self.nodes[0].listunspent(1)
  36         tx1 = self.nodes[0].createrawtransaction([node0utxos.pop()], {self.nodes[1].getnewaddress(): 49.99})
  37         txid1 = self.nodes[0].sendrawtransaction(self.nodes[0].signrawtransaction(tx1)["hex"])
  38         tx2 = self.nodes[0].createrawtransaction([node0utxos.pop()], {self.nodes[1].getnewaddress(): 49.99})
  39         txid2 = self.nodes[0].sendrawtransaction(self.nodes[0].signrawtransaction(tx2)["hex"])
  40         # This will raise an exception because the transaction is not yet in a block
  41         assert_raises_rpc_error(-5, "Transaction not yet in block", self.nodes[0].gettxoutproof, [txid1])
  42
  43         self.nodes[0].generate(1)
  44         blockhash = self.nodes[0].getblockhash(chain_height + 1)
  45         self.sync_all()
  46
  47         txlist = []
  48         blocktxn = self.nodes[0].getblock(blockhash, True)["tx"]
  49         txlist.append(blocktxn[1])
  50         txlist.append(blocktxn[2])
  51
  52         assert_equal(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid1])), [txid1])
  53         assert_equal(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid1, txid2])), txlist)
  54         assert_equal(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid1, txid2], blockhash)), txlist)
  55
  56         txin_spent = self.nodes[1].listunspent(1).pop()
  57         tx3 = self.nodes[1].createrawtransaction([txin_spent], {self.nodes[0].getnewaddress(): 49.98})
  58         txid3 = self.nodes[0].sendrawtransaction(self.nodes[1].signrawtransaction(tx3)["hex"])
  59         self.nodes[0].generate(1)
  60         self.sync_all()
  61
  62         txid_spent = txin_spent["txid"]
  63         txid_unspent = txid1 if txin_spent["txid"] != txid1 else txid2
  64
  65         # We can't find the block from a fully-spent tx
  66         assert_raises_rpc_error(-5, "Transaction not yet in block", self.nodes[2].gettxoutproof, [txid_spent])
  67         # We can get the proof if we specify the block
  68         assert_equal(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid_spent], blockhash)), [txid_spent])
  69         # We can't get the proof if we specify a non-existent block
  70         assert_raises_rpc_error(-5, "Block not found", self.nodes[2].gettxoutproof, [txid_spent], "00000000000000000000000000000000")
  71         # We can get the proof if the transaction is unspent
  72         assert_equal(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid_unspent])), [txid_unspent])
  73         # We can get the proof if we provide a list of transactions and one of them is unspent. The ordering of the list should not matter.
  74         assert_equal(sorted(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid1, txid2]))), sorted(txlist))
  75         assert_equal(sorted(self.nodes[2].verifytxoutproof(self.nodes[2].gettxoutproof([txid2, txid1]))), sorted(txlist))
  76         # We can always get a proof if we have a -txindex
  77         assert_equal(self.nodes[2].verifytxoutproof(self.nodes[3].gettxoutproof([txid_spent])), [txid_spent])
  78         # We can't get a proof if we specify transactions from different blocks
  79         assert_raises_rpc_error(-5, "Not all transactions found in specified or retrieved block", self.nodes[2].gettxoutproof, [txid1, txid3])
  80
  81
  82 if __name__ == '__main__':
  83     MerkleBlockTest().main()