text: #!/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 GuldenTestFramework
  from test_framework.util import assert_equal, assert_raises_rpc_error
  
  import os
  
  
  class HelpRpcTest(GuldenTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
  
      def run_test(self):
          self.test_categories()
          self.dump_help()
  
      def test_categories(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('==')]
  
          components = ['Accounts', 'Block_generation', 'Blockchain', 'Control', 'Developer', 'Generating', 'Mnemonics', 'Network', 'Rawtransactions', 'Util']
  
          if self.is_wallet_compiled():
              components.append('Wallet')
  
          components.append('Witness')
  
          ###if self.is_zmq_compiled():
              ###components.append('Zmq')
  
          assert_equal(titles, components)
  
      def dump_help(self):
          dump_dir = os.path.join(self.options.tmpdir, 'rpc_help_dump')
          os.mkdir(dump_dir)
          calls = [line.split(' ', 1)[0] for line in self.nodes[0].help().splitlines() if line and not line.startswith('==')]
          for call in calls:
              with open(os.path.join(dump_dir, call), 'w', encoding='utf-8') as f:
                  # Make sure the node can generate the help at runtime without crashing
                  f.write(self.nodes[0].help(call))
  
  
  if __name__ == '__main__':
      HelpRpcTest().main()
  