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 PivxTestFramework
  from test_framework.util import *
  import time
  
  class TxnMallTest(PivxTestFramework):
      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 6,250 TRTT:
          starting_balance = 6250
          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 addresses:
          node0_address_foo = self.nodes[0].getnewaddress()
          fund_foo_txid = self.nodes[0].sendtoaddress(node0_address_foo, (1219 * 5))
          fund_foo_tx = self.nodes[0].gettransaction(fund_foo_txid)
  
          node0_address_bar = self.nodes[0].getnewaddress()
          fund_bar_txid = self.nodes[0].sendtoaddress(node0_address_bar, (29 * 5))
          fund_bar_tx = self.nodes[0].gettransaction(fund_bar_txid)
  
          assert_equal(self.nodes[0].getbalance(),
                       starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"])
  
          # Coins are sent to node1_address
          node1_address = self.nodes[1].getnewaddress()
  
          # First: use raw transaction API to send 1240 * 5 TRTT 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 * 5))
          rawtx_input_1 = {}
          rawtx_input_1["txid"] = fund_bar_txid
          rawtx_input_1["vout"] = find_output(self.nodes[0], fund_bar_txid, (29 * 5))
          inputs = [rawtx_input_0, rawtx_input_1]
          change_address = self.nodes[0].getnewaddress()
          outputs = {}
          outputs[node1_address] = float(1240 * 5)
          outputs[change_address] = float((1248 * 5) - (1240 * 5) + doublespend_fee)
          rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
          doublespend = self.nodes[0].signrawtransaction(rawtx)
          assert_equal(doublespend["complete"], True)
  
          # Create two spends using 1 50 BTC coin each
          txid1 = self.nodes[0].sendtoaddress(node1_address, (40 * 5))
          txid2 = self.nodes[0].sendtoaddress(node1_address, (20 * 5))
  
          # 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 += 250
          expected += tx1["amount"] + tx1["fee"]
          expected += tx2["amount"] + tx2["fee"]
          assert_equal(self.nodes[0].getbalance(), expected)
  
          if self.options.mine_block:
              assert_equal(tx1["bcconfirmations"], 1)
              assert_equal(tx2["bcconfirmations"], 1)
              # Node1's balance should be both transaction amounts:
              assert_equal(self.nodes[1].getbalance(), starting_balance - tx1["amount"] - tx2["amount"])
          else:
              assert_equal(tx1["bcconfirmations"], 0)
              assert_equal(tx2["bcconfirmations"], 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)
          connect_nodes(self.nodes[0], 2)
          connect_nodes(self.nodes[2], 0)
          connect_nodes(self.nodes[2], 1)
          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["bcconfirmations"], -2)
          assert_equal(tx2["bcconfirmations"], -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 + 500 - (1240 * 5) + fund_foo_tx["fee"] + fund_bar_tx["fee"] + doublespend_fee
          assert_equal(self.nodes[0].getbalance(), expected)
  
          # Node1's "from0" account balance should be just the doublespend:
          assert_equal(self.nodes[1].getbalance(), 6250 + (1240 * 5))
  
  
  if __name__ == '__main__':
      TxnMallTest().main()
  