text: #!/usr/bin/env python3
  # Copyright (c) 2014-2017 The Bitcoin Core developers
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  """Test the wallet accounts properly when there is a double-spend conflict."""
  
  from test_framework.test_framework import HuntcoinTestFramework
  from test_framework.util import *
  
  class TxnMallTest(HuntcoinTestFramework):
      def set_test_params(self):
          self.num_nodes = 4
  
      def add_options(self, parser):
          parser.add_option("--mineblock", dest="mine_block", default=False, action="store_true",
                            help="Test double-spend of 1-confirmed transaction")
  
      def setup_network(self):
          # Start with split network:
          super().setup_network()
          disconnect_nodes(self.nodes[1], 2)
          disconnect_nodes(self.nodes[2], 1)
  
      def run_test(self):
          # All nodes should start with 1,250 BTC:
          starting_balance = 1250
          for i in range(4):
              assert_equal(self.nodes[i].getbalance(), starting_balance)
              self.nodes[i].getnewaddress("")  # bug workaround, coins generated assigned to first getnewaddress!
          
          # Assign coins to foo and bar accounts:
          node0_address_foo = self.nodes[0].getnewaddress("foo")
          fund_foo_txid = self.nodes[0].sendfrom("", node0_address_foo, 1219)
          fund_foo_tx = self.nodes[0].gettransaction(fund_foo_txid)
  
          node0_address_bar = self.nodes[0].getnewaddress("bar")
          fund_bar_txid = self.nodes[0].sendfrom("", node0_address_bar, 29)
          fund_bar_tx = self.nodes[0].gettransaction(fund_bar_txid)
  
          assert_equal(self.nodes[0].getbalance(""),
                       starting_balance - 1219 - 29 + fund_foo_tx["fee"] + fund_bar_tx["fee"])
  
          # Coins are sent to node1_address
          node1_address = self.nodes[1].getnewaddress("from0")
  
          # First: use raw transaction API to send 1240 BTC to node1_address,
          # but don't broadcast:
          doublespend_fee = Decimal('-.02')
          rawtx_input_0 = {}
          rawtx_input_0["txid"] = fund_foo_txid
          rawtx_input_0["vout"] = find_output(self.nodes[0], fund_foo_txid, 1219)
          rawtx_input_1 = {}
          rawtx_input_1["txid"] = fund_bar_txid
          rawtx_input_1["vout"] = find_output(self.nodes[0], fund_bar_txid, 29)
          inputs = [rawtx_input_0, rawtx_input_1]
          change_address = self.nodes[0].getnewaddress()
          outputs = {}
          outputs[node1_address] = 1240
          outputs[change_address] = 1248 - 1240 + doublespend_fee
          rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
          doublespend = self.nodes[0].signrawtransactionwithwallet(rawtx)
          assert_equal(doublespend["complete"], True)
  
          # Create two spends using 1 50 BTC coin each
          txid1 = self.nodes[0].sendfrom("foo", node1_address, 40, 0)
          txid2 = self.nodes[0].sendfrom("bar", node1_address, 20, 0)
          
          # Have node0 mine a block:
          if (self.options.mine_block):
              self.nodes[0].generate(1)
              sync_blocks(self.nodes[0:2])
  
          tx1 = self.nodes[0].gettransaction(txid1)
          tx2 = self.nodes[0].gettransaction(txid2)
  
          # Node0's balance should be starting balance, plus 50BTC for another
          # matured block, minus 40, minus 20, and minus transaction fees:
          expected = starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"]
          if self.options.mine_block: expected += 50
          expected += tx1["amount"] + tx1["fee"]
          expected += tx2["amount"] + tx2["fee"]
          assert_equal(self.nodes[0].getbalance(), expected)
  
          # foo and bar accounts should be debited:
          assert_equal(self.nodes[0].getbalance("foo", 0), 1219+tx1["amount"]+tx1["fee"])
          assert_equal(self.nodes[0].getbalance("bar", 0), 29+tx2["amount"]+tx2["fee"])
  
          if self.options.mine_block:
              assert_equal(tx1["confirmations"], 1)
              assert_equal(tx2["confirmations"], 1)
              # Node1's "from0" balance should be both transaction amounts:
              assert_equal(self.nodes[1].getbalance("from0"), -(tx1["amount"]+tx2["amount"]))
          else:
              assert_equal(tx1["confirmations"], 0)
              assert_equal(tx2["confirmations"], 0)
          
          # Now give doublespend and its parents to miner:
          self.nodes[2].sendrawtransaction(fund_foo_tx["hex"])
          self.nodes[2].sendrawtransaction(fund_bar_tx["hex"])
          doublespend_txid = self.nodes[2].sendrawtransaction(doublespend["hex"])
          # ... mine a block...
          self.nodes[2].generate(1)
  
          # Reconnect the split network, and sync chain:
          connect_nodes(self.nodes[1], 2)
          self.nodes[2].generate(1)  # Mine another block to make sure we sync
          sync_blocks(self.nodes)
          assert_equal(self.nodes[0].gettransaction(doublespend_txid)["confirmations"], 2)
  
          # Re-fetch transaction info:
          tx1 = self.nodes[0].gettransaction(txid1)
          tx2 = self.nodes[0].gettransaction(txid2)
  
          # Both transactions should be conflicted
          assert_equal(tx1["confirmations"], -2)
          assert_equal(tx2["confirmations"], -2)
  
          # Node0's total balance should be starting balance, plus 100BTC for 
          # two more matured blocks, minus 1240 for the double-spend, plus fees (which are
          # negative):
          expected = starting_balance + 100 - 1240 + fund_foo_tx["fee"] + fund_bar_tx["fee"] + doublespend_fee
          assert_equal(self.nodes[0].getbalance(), expected)
          assert_equal(self.nodes[0].getbalance("*"), expected)
  
          # Final "" balance is starting_balance - amount moved to accounts - doublespend + subsidies +
          # fees (which are negative)
          assert_equal(self.nodes[0].getbalance("foo"), 1219)
          assert_equal(self.nodes[0].getbalance("bar"), 29)
          assert_equal(self.nodes[0].getbalance(""), starting_balance
                                                                -1219
                                                                -  29
                                                                -1240
                                                                + 100
                                                                + fund_foo_tx["fee"]
                                                                + fund_bar_tx["fee"]
                                                                + doublespend_fee)
  
          # Node1's "from0" account balance should be just the doublespend:
          assert_equal(self.nodes[1].getbalance("from0"), 1240)
  
  if __name__ == '__main__':
      TxnMallTest().main()
  
  