text: #!/usr/bin/env python3
  # Copyright (c) 2014-2016 The Gulden Core developers
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  # Test mempool limiting together/eviction with the wallet
  
  from test_framework.test_framework import GuldenTestFramework
  from test_framework.util import *
  
  class MempoolLimitTest(GuldenTestFramework):
  
      def setup_network(self):
          self.nodes = []
          self.nodes.append(start_node(0, self.options.tmpdir, ["-maxmempool=5", "-spendzeroconfchange=0", "-debug"]))
          self.is_network_split = False
          self.sync_all()
          self.relayfee = self.nodes[0].getnetworkinfo()['relayfee']
  
      def __init__(self):
          super().__init__()
          self.setup_clean_chain = True
          self.num_nodes = 1
  
          self.txouts = gen_return_txouts()
  
      def run_test(self):
          txids = []
          utxos = create_confirmed_utxos(self.relayfee, self.nodes[0], 90)
  
          #create a mempool tx that will be evicted
          us0 = utxos.pop()
          inputs = [{ "txid" : us0["txid"], "vout" : us0["vout"]}]
          outputs = {self.nodes[0].getnewaddress() : 0.0001}
          tx = self.nodes[0].createrawtransaction(inputs, outputs)
          self.nodes[0].settxfee(self.relayfee) # specifically fund this tx with low fee
          txF = self.nodes[0].fundrawtransaction(tx)
          self.nodes[0].settxfee(0) # return to automatic fee selection
          txFS = self.nodes[0].signrawtransaction(txF['hex'])
          txid = self.nodes[0].sendrawtransaction(txFS['hex'])
  
          relayfee = self.nodes[0].getnetworkinfo()['relayfee']
          base_fee = relayfee*100
          for i in range (4):
              txids.append([])
              txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[30*i:30*i+30], (i+1)*base_fee)
  
          # by now, the tx should be evicted, check confirmation state
          assert(txid not in self.nodes[0].getrawmempool())
          txdata = self.nodes[0].gettransaction(txid)
          assert(txdata['confirmations'] ==  0) #confirmation should still be 0
  
  if __name__ == '__main__':
      MempoolLimitTest().main()
  