text: #!/usr/bin/env python3
  # Copyright (c) 2018 The Bitcoin Core developers
  # Copyright (c) 2017-2020 The Qtum Core developers
  # Copyright (c) 2020 The BITCOIN2Core developers
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  """Tests some generic aspects of the RPC interface."""
  
  from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import assert_equal, assert_greater_than_or_equal
  
  class RPCInterfaceTest(BitcoinTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
          self.setup_clean_chain = True
  
      def test_getrpcinfo(self):
          self.log.info("Testing getrpcinfo...")
  
          info = self.nodes[0].getrpcinfo()
          assert_equal(len(info['active_commands']), 1)
  
          command = info['active_commands'][0]
          assert_equal(command['method'], 'getrpcinfo')
          assert_greater_than_or_equal(command['duration'], 0)
  
      def test_batch_request(self):
          self.log.info("Testing basic JSON-RPC batch request...")
  
          results = self.nodes[0].batch([
              # A basic request that will work fine.
              {"method": "getblockcount", "id": 1},
              # Request that will fail.  The whole batch request should still
              # work fine.
              {"method": "invalidmethod", "id": 2},
              # Another call that should succeed.
              {"method": "getbestblockhash", "id": 3},
          ])
  
          result_by_id = {}
          for res in results:
              result_by_id[res["id"]] = res
  
          assert_equal(result_by_id[1]['error'], None)
          assert_equal(result_by_id[1]['result'], 0)
  
          assert_equal(result_by_id[2]['error']['code'], -32601)
          assert_equal(result_by_id[2]['result'], None)
  
          assert_equal(result_by_id[3]['error'], None)
          assert result_by_id[3]['result'] is not None
  
      def run_test(self):
          self.test_getrpcinfo()
          self.test_batch_request()
  
  
  if __name__ == '__main__':
      RPCInterfaceTest().main()
  