text: #!/usr/bin/env python3
  # Copyright (c) 2016-2017 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 dumpwallet RPC."""
  
  import os
  
  from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import (
      assert_equal,
      assert_raises_rpc_error,
  )
  
  
  def read_dump(file_name, addrs, script_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_script_addr = 0
          found_addr_chg = 0
          found_addr_rsv = 0
          witness_addr_ret = None
          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
                      elif keytype == "script=1":
                          # scripts don't have keypaths
                          keypath = None
                      else:
                          keypath = addr_keypath.rstrip().split("hdkeypath=")[1]
  
                      # count key types
                      for addrObj in addrs:
                          if addrObj['address'] == addr.split(",")[0] and addrObj['hdkeypath'] == keypath and keytype == "label=":
                              # a labeled entry in the wallet should contain both a native address
                              # and the p2sh-p2wpkh address that was added at wallet setup
                              if len(addr.split(",")) == 2:
                                  addr_list = addr.split(",")
                                  # the entry should be of the first key in the wallet
                                  assert_equal(addrs[0]['address'], addr_list[0])
                                  witness_addr_ret = addr_list[1]
                              found_addr += 1
                              break
                          elif keytype == "change=1":
                              found_addr_chg += 1
                              break
                          elif keytype == "reserve=1":
                              found_addr_rsv += 1
                              break
  
                      # count scripts
                      for script_addr in script_addrs:
                          if script_addr == addr.rstrip() and keytype == "script=1":
                              found_script_addr += 1
                              break
  
          return found_addr, found_script_addr, found_addr_chg, found_addr_rsv, hd_master_addr_ret, witness_addr_ret
  
  
  class WalletDumpTest(BitcoinTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
          self.extra_args = [["-keypool=90", "-addresstype=legacy", "-deprecatedrpc=addwitnessaddress"]]
  
      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.add_nodes(self.num_nodes, extra_args=self.extra_args, timewait=60)
          self.start_nodes()
  
      def run_test (self):
          wallet_unenc_dump = os.path.join(self.nodes[0].datadir, "wallet.unencrypted.dump")
          wallet_enc_dump = os.path.join(self.nodes[0].datadir, "wallet.encrypted.dump")
  
          # generate 20 addresses to compare against the dump
          # but since we add a p2sh-p2wpkh address for the first pubkey in the
          # wallet, we will expect 21 addresses in the dump
          test_addr_count = 20
          addrs = []
          for i in range(0,test_addr_count):
              addr = self.nodes[0].getnewaddress()
              vaddr= self.nodes[0].getaddressinfo(addr) #required to get hd keypath
              addrs.append(vaddr)
          # Should be a no-op:
          self.nodes[0].keypoolrefill()
  
          # Test scripts dump by adding a P2SH witness and a 1-of-1 multisig address
          witness_addr = self.nodes[0].addwitnessaddress(addrs[0]["address"], True)
          multisig_addr = self.nodes[0].addmultisigaddress(1, [addrs[1]["address"]])["address"]
          script_addrs = [witness_addr, multisig_addr]
  
          # dump unencrypted wallet
          result = self.nodes[0].dumpwallet(wallet_unenc_dump)
          assert_equal(result['filename'], wallet_unenc_dump)
  
          found_addr, found_script_addr, found_addr_chg, found_addr_rsv, hd_master_addr_unenc, witness_addr_ret = \
              read_dump(wallet_unenc_dump, addrs, script_addrs, None)
          assert_equal(found_addr, test_addr_count)  # all keys must be in the dump
          assert_equal(found_script_addr, 2)  # all scripts 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
          assert_equal(witness_addr_ret, witness_addr) # p2sh-p2wsh address added to the first key
  
          #encrypt wallet, restart, unlock and dump
          self.nodes[0].node_encrypt_wallet('test')
          self.start_node(0)
          self.nodes[0].walletpassphrase('test', 10)
          # Should be a no-op:
          self.nodes[0].keypoolrefill()
          self.nodes[0].dumpwallet(wallet_enc_dump)
  
          found_addr, found_script_addr, found_addr_chg, found_addr_rsv, _, witness_addr_ret = \
              read_dump(wallet_enc_dump, addrs, script_addrs, hd_master_addr_unenc)
          assert_equal(found_addr, test_addr_count)
          assert_equal(found_script_addr, 2)
          assert_equal(found_addr_chg, 90*2 + 50)  # old reserve keys are marked as change now
          assert_equal(found_addr_rsv, 90*2) 
          assert_equal(witness_addr_ret, witness_addr)
  
          # Overwriting should fail
          assert_raises_rpc_error(-8, "already exists", lambda: self.nodes[0].dumpwallet(wallet_enc_dump))
  
          # Restart node with new wallet, and test importwallet
          self.stop_node(0)
          self.start_node(0, ['-wallet=w2'])
  
          # Make sure the address is not IsMine before import
          result = self.nodes[0].getaddressinfo(multisig_addr)
          assert(result['ismine'] == False)
  
          self.nodes[0].importwallet(wallet_unenc_dump)
  
          # Now check IsMine is true
          result = self.nodes[0].getaddressinfo(multisig_addr)
          assert(result['ismine'] == True)
  
  if __name__ == '__main__':
      WalletDumpTest().main()
  