text: #!/usr/bin/env python3
  # Copyright (c) 2018-2019 The Cruro Core developers
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import (
      assert_equal,
      assert_raises_rpc_error,
  )
  from test_framework.blocktools import (
      TIME_GENESIS_BLOCK,
  )
  
  
  class CreateTxWalletTest(BitcoinTestFramework):
      def set_test_params(self):
          self.setup_clean_chain = True
          self.num_nodes = 1
  
      def skip_test_if_missing_module(self):
          self.skip_if_no_wallet()
  
      def run_test(self):
          self.log.info('Create some old blocks')
          self.nodes[0].setmocktime(TIME_GENESIS_BLOCK)
          self.nodes[0].generate(200)
          self.nodes[0].setmocktime(0)
  
          self.test_anti_fee_sniping()
          self.test_tx_size_too_large()
  
      def test_anti_fee_sniping(self):
          self.log.info('Check that we have some (old) blocks and that anti-fee-sniping is disabled')
          assert_equal(self.nodes[0].getblockchaininfo()['blocks'], 200)
          txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
          tx = self.nodes[0].decoderawtransaction(self.nodes[0].gettransaction(txid)['hex'])
          assert_equal(tx['locktime'], 0)
  
          self.log.info('Check that anti-fee-sniping is enabled when we mine a recent block')
          self.nodes[0].generate(1)
          txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
          tx = self.nodes[0].decoderawtransaction(self.nodes[0].gettransaction(txid)['hex'])
          assert 0 < tx['locktime'] <= 201
  
      def test_tx_size_too_large(self):
          # More than 10kB of outputs, so that we hit -maxtxfee with a high feerate
          outputs = {self.nodes[0].getnewaddress(address_type='bech32'): 0.000025 for i in range(400)}
          raw_tx = self.nodes[0].createrawtransaction(inputs=[], outputs=outputs)
  
          for fee_setting in ['-minrelaytxfee=0.01', '-mintxfee=0.01', '-paytxfee=0.01']:
              self.log.info('Check maxtxfee in combination with {}'.format(fee_setting))
              self.restart_node(0, extra_args=[fee_setting])
              assert_raises_rpc_error(
                  -6,
                  "Fee exceeds maximum configured by -maxtxfee",
                  lambda: self.nodes[0].sendmany(dummy="", amounts=outputs),
              )
              assert_raises_rpc_error(
                  -4,
                  "Fee exceeds maximum configured by -maxtxfee",
                  lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
              )
  
          self.log.info('Check maxtxfee in combination with settxfee')
          self.restart_node(0)
          self.nodes[0].settxfee(0.01)
          assert_raises_rpc_error(
              -6,
              "Fee exceeds maximum configured by -maxtxfee",
              lambda: self.nodes[0].sendmany(dummy="", amounts=outputs),
          )
          assert_raises_rpc_error(
              -4,
              "Fee exceeds maximum configured by -maxtxfee",
              lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
          )
          self.nodes[0].settxfee(0)
  
  
  if __name__ == '__main__':
      CreateTxWalletTest().main()
  