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 Wallet encryption"""
  
  import time
  
  from test_framework.test_framework import OmegacoinTestFramework
  from test_framework.util import (
      assert_equal,
      assert_raises_rpc_error,
      assert_greater_than,
      assert_greater_than_or_equal,
  )
  
  class WalletEncryptionTest(OmegacoinTestFramework):
      def set_test_params(self):
          self.setup_clean_chain = True
          self.num_nodes = 1
  
      def run_test(self):
          passphrase = "WalletPassphrase"
          passphrase2 = "SecondWalletPassphrase"
  
          # Make sure the wallet isn't encrypted first
          address = self.nodes[0].getnewaddress()
          privkey = self.nodes[0].dumpprivkey(address)
          assert_equal(privkey[:1], "c")
          assert_equal(len(privkey), 52)
  
          # Encrypt the wallet
          self.nodes[0].node_encrypt_wallet(passphrase)
          self.start_node(0)
  
          # Test that the wallet is encrypted
          assert_raises_rpc_error(-13, "Please enter the wallet passphrase with walletpassphrase first", self.nodes[0].dumpprivkey, address)
  
          # Check that walletpassphrase works
          self.nodes[0].walletpassphrase(passphrase, 2)
          assert_equal(privkey, self.nodes[0].dumpprivkey(address))
  
          # Check that the timeout is right
          time.sleep(2)
          assert_raises_rpc_error(-13, "Please enter the wallet passphrase with walletpassphrase first", self.nodes[0].dumpprivkey, address)
  
          # Test wrong passphrase
          assert_raises_rpc_error(-14, "wallet passphrase entered was incorrect", self.nodes[0].walletpassphrase, passphrase + "wrong", 10)
  
          # Test walletlock
          self.nodes[0].walletpassphrase(passphrase, 84600)
          assert_equal(privkey, self.nodes[0].dumpprivkey(address))
          self.nodes[0].walletlock()
          assert_raises_rpc_error(-13, "Please enter the wallet passphrase with walletpassphrase first", self.nodes[0].dumpprivkey, address)
  
          # Test wallet already unlocked
          self.nodes[0].walletpassphrase(passphrase, 12000, True)
          assert_raises_rpc_error(-17, "Wallet is already unlocked", self.nodes[0].walletpassphrase, passphrase, 100, True)
          self.nodes[0].walletlock()
  
          # Test passphrase changes
          self.nodes[0].walletpassphrasechange(passphrase, passphrase2)
          assert_raises_rpc_error(-14, "wallet passphrase entered was incorrect", self.nodes[0].walletpassphrase, passphrase, 10)
          self.nodes[0].walletpassphrase(passphrase2, 10)
          assert_equal(privkey, self.nodes[0].dumpprivkey(address))
          self.nodes[0].walletlock()
  
          # Test timeout bounds
          assert_raises_rpc_error(-8, "Timeout cannot be negative.", self.nodes[0].walletpassphrase, passphrase2, -10)
          # Check the timeout
          # Check a time less than the limit
          MAX_VALUE = 100000000
          expected_time = int(time.time()) + MAX_VALUE - 600
          self.nodes[0].walletpassphrase(passphrase2, MAX_VALUE - 600)
          actual_time = self.nodes[0].getwalletinfo()['unlocked_until']
          assert_greater_than_or_equal(actual_time, expected_time)
          assert_greater_than(expected_time + 5, actual_time) # 5 second buffer
          # Check a time greater than the limit
          expected_time = int(time.time()) + MAX_VALUE - 1
          self.nodes[0].walletpassphrase(passphrase2, MAX_VALUE + 1000)
          actual_time = self.nodes[0].getwalletinfo()['unlocked_until']
          assert_greater_than_or_equal(actual_time, expected_time)
          assert_greater_than(expected_time + 5, actual_time) # 5 second buffer
  
  if __name__ == '__main__':
      WalletEncryptionTest().main()
  