old_contents: #!/usr/bin/env python3
  # Copyright (c) 2018 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 RPC help output."""
  
  from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import assert_equal, assert_raises_rpc_error
  
  class HelpRpcTest(BitcoinTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
  
      def run_test(self):
          node = self.nodes[0]
  
          # wrong argument count
          assert_raises_rpc_error(-1, 'help', node.help, 'foo', 'bar')
  
          # invalid argument
          assert_raises_rpc_error(-1, 'JSON value is not a string as expected', node.help, 0)
  
          # help of unknown command
          assert_equal(node.help('foo'), 'help: unknown command: foo')
  
          # command titles
          titles = [line[3:-3] for line in node.help().splitlines() if line.startswith('==')]
          assert_equal(titles, ['Blockchain', 'Control', 'Generating', 'Mining', 'Network', 'Rawtransactions', 'Util', 'Wallet', 'Zmq'])
  
  if __name__ == '__main__':
      HelpRpcTest().main()
  
new_contents: #!/usr/bin/env python3
  # Copyright (c) 2018 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 RPC help output."""
  
  from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import assert_equal, assert_raises_rpc_error
  
  class HelpRpcTest(BitcoinTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
  
      def run_test(self):
          node = self.nodes[0]
  
          # wrong argument count, note: Dash's help allows for two options since we utilize subcommands
          assert_raises_rpc_error(-1, 'help', node.help, 'foo', 'bar', 'foobar')
  
          # invalid argument
          assert_raises_rpc_error(-1, 'JSON value is not a string as expected', node.help, 0)
  
          # help of unknown command
          assert_equal(node.help('foo'), 'help: unknown command: foo')
  
          # command titles
          titles = [line[3:-3] for line in node.help().splitlines() if line.startswith('==')]
          assert_equal(titles, ['Addressindex', 'Blockchain', 'Control', 'Dash', 'Evo', 'Generating', 'Mining', 'Network', 'Rawtransactions', 'Util', 'Wallet', 'Zmq'])
  
  if __name__ == '__main__':
      HelpRpcTest().main()
  
subject: fix rpc_help.py