1  #!/usr/bin/env python3
 2  # Copyright (c) 2016-present The Bitcoin Core developers
 3  # Distributed under the MIT software license, see the accompanying
 4  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 5  """Test using named arguments for RPCs."""
 6  
 7  from test_framework.test_framework import BitcoinTestFramework
 8  from test_framework.util import (
 9      assert_equal,
10      assert_raises_rpc_error,
11  )
12  
13  class NamedArgumentTest(BitcoinTestFramework):
14      def set_test_params(self):
15          self.num_nodes = 1
16          self.supports_cli = False
17  
18      def run_test(self):
19          node = self.nodes[0]
20          h = node.help(command='getblockchaininfo')
21          assert h.startswith('getblockchaininfo\n')
22  
23          assert_raises_rpc_error(-8, 'Unknown named parameter', node.help, random='getblockchaininfo')
24  
25          h = node.getblockhash(height=0)
26          node.getblock(blockhash=h)
27  
28          assert_equal(node.echo(), [])
29          assert_equal(node.echo(arg0=0,arg9=9), [0] + [None]*8 + [9])
30          assert_equal(node.echo(arg1=1), [None, 1])
31          assert_equal(node.echo(arg9=None), [None]*10)
32          assert_equal(node.echo(arg0=0,arg3=3,arg9=9), [0] + [None]*2 + [3] + [None]*5 + [9])
33          assert_equal(node.echo(0, 1, arg3=3, arg5=5), [0, 1, None, 3, None, 5])
34          assert_raises_rpc_error(-8, "Parameter arg1 specified twice both as positional and named argument", node.echo, 0, 1, arg1=1)
35          assert_raises_rpc_error(-8, "Parameter arg1 specified twice both as positional and named argument", node.echo, 0, None, 2, arg1=1)
36  
37  if __name__ == '__main__':
38      NamedArgumentTest(__file__).main()