text: #!/usr/bin/env python3
  # Copyright (c) 2016 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 dumpwallet RPC."""
  
  import os
  
  from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import assert_equal
  
  
  def read_dump(file_name, addrs, hd_master_addr_old):
      """
      Read the given dump, count the addrs that match, count change and reserve.
      Also check that the old hd_master is inactive
      """
      with open(file_name, encoding='utf8') as inputfile:
          found_addr = 0
          found_addr_chg = 0
          found_addr_rsv = 0
          hd_master_addr_ret = None
          for line in inputfile:
              # only read non comment lines
              if line[0] != "#" and len(line) > 10:
                  # split out some data
                  key_label, comment = line.split("#")
                  # key = key_label.split(" ")[0]
                  keytype = key_label.split(" ")[2]
                  if len(comment) > 1:
                      addr_keypath = comment.split(" addr=")[1]
                      addr = addr_keypath.split(" ")[0]
                      keypath = None
                      if keytype == "inactivehdmaster=1":
                          # ensure the old master is still available
                          assert(hd_master_addr_old == addr)
                      elif keytype == "hdmaster=1":
                          # ensure we have generated a new hd master key
                          assert(hd_master_addr_old != addr)
                          hd_master_addr_ret = addr
                      else:
                          keypath = addr_keypath.rstrip().split("hdkeypath=")[1]
  
                      # count key types
                      for addrObj in addrs:
                          if addrObj['address'] == addr and addrObj['hdkeypath'] == keypath and keytype == "label=":
                              found_addr += 1
                              break
                          elif keytype == "change=1":
                              found_addr_chg += 1
                              break
                          elif keytype == "reserve=1":
                              found_addr_rsv += 1
                              break
          return found_addr, found_addr_chg, found_addr_rsv, hd_master_addr_ret
  
  
  class WalletDumpTest(BitcoinTestFramework):
  
      def __init__(self):
          super().__init__()
          self.setup_clean_chain = False
          self.num_nodes = 1
          self.extra_args = [["-keypool=90"]]
  
      def setup_network(self, split=False):
          # Use 1 minute timeout because the initial getnewaddress RPC can take
          # longer than the default 30 seconds due to an expensive
          # CWallet::TopUpKeyPool call, and the encryptwallet RPC made later in
          # the test often takes even longer.
          self.nodes = self.start_nodes(self.num_nodes, self.options.tmpdir, self.extra_args, timewait=60)
  
      def run_test (self):
          tmpdir = self.options.tmpdir
  
          # generate 20 addresses to compare against the dump
          test_addr_count = 20
          addrs = []
          for i in range(0,test_addr_count):
              addr = self.nodes[0].getnewaddress()
              vaddr= self.nodes[0].validateaddress(addr) #required to get hd keypath
              addrs.append(vaddr)
          # Should be a no-op:
          self.nodes[0].keypoolrefill()
  
          # dump unencrypted wallet
          result = self.nodes[0].dumpwallet(tmpdir + "/node0/wallet.unencrypted.dump")
          assert_equal(result['filename'], os.path.abspath(tmpdir + "/node0/wallet.unencrypted.dump"))
  
          found_addr, found_addr_chg, found_addr_rsv, hd_master_addr_unenc = \
              read_dump(tmpdir + "/node0/wallet.unencrypted.dump", addrs, None)
          assert_equal(found_addr, test_addr_count)  # all keys must be in the dump
          assert_equal(found_addr_chg, 50)  # 50 blocks where mined
          assert_equal(found_addr_rsv, 90*2) # 90 keys plus 100% internal keys
  
          #encrypt wallet, restart, unlock and dump
          self.nodes[0].encryptwallet('test')
          self.bitcoind_processes[0].wait()
          self.nodes[0] = self.start_node(0, self.options.tmpdir, self.extra_args[0])
          self.nodes[0].walletpassphrase('test', 10)
          # Should be a no-op:
          self.nodes[0].keypoolrefill()
          self.nodes[0].dumpwallet(tmpdir + "/node0/wallet.encrypted.dump")
  
          found_addr, found_addr_chg, found_addr_rsv, hd_master_addr_enc = \
              read_dump(tmpdir + "/node0/wallet.encrypted.dump", addrs, hd_master_addr_unenc)
          assert_equal(found_addr, test_addr_count)
          assert_equal(found_addr_chg, 90*2 + 50)  # old reserve keys are marked as change now
          assert_equal(found_addr_rsv, 90*2) 
  
  if __name__ == '__main__':
      WalletDumpTest().main ()
  