qa/rpc-tests/blockchain.py

   1 #!/usr/bin/env python3
   2 # Copyright (c) 2014-2016 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
   6 #
   7 # Test RPC calls related to blockchain state. Tests correspond to code in
   8 # rpc/blockchain.cpp.
   9 #
  10
  11 from decimal import Decimal
  12
  13 from test_framework.test_framework import BitcoinTestFramework
  14 from test_framework.authproxy import JSONRPCException
  15 from test_framework.util import (
  16     assert_equal,
  17     assert_raises,
  18     assert_is_hex_string,
  19     assert_is_hash_string,
  20     start_nodes,
  21     connect_nodes_bi,
  22 )
  23
  24
  25 class BlockchainTest(BitcoinTestFramework):
  26     """
  27     Test blockchain-related RPC calls:
  28
  29         - gettxoutsetinfo
  30         - verifychain
  31
  32     """
  33
  34     def __init__(self):
  35         super().__init__()
  36         self.setup_clean_chain = False
  37         self.num_nodes = 2
  38
  39     def setup_network(self, split=False):
  40         self.nodes = start_nodes(self.num_nodes, self.options.tmpdir)
  41         connect_nodes_bi(self.nodes, 0, 1)
  42         self.is_network_split = False
  43         self.sync_all()
  44
  45     def run_test(self):
  46         self._test_gettxoutsetinfo()
  47         self._test_getblockheader()
  48         self.nodes[0].verifychain(4, 0)
  49
  50     def _test_gettxoutsetinfo(self):
  51         node = self.nodes[0]
  52         res = node.gettxoutsetinfo()
  53
  54         assert_equal(res['total_amount'], Decimal('8725.00000000'))
  55         assert_equal(res['transactions'], 200)
  56         assert_equal(res['height'], 200)
  57         assert_equal(res['txouts'], 200)
  58         assert_equal(res['bytes_serialized'], 13924),
  59         assert_equal(len(res['bestblock']), 64)
  60         assert_equal(len(res['hash_serialized']), 64)
  61
  62     def _test_getblockheader(self):
  63         node = self.nodes[0]
  64
  65         assert_raises(
  66             JSONRPCException, lambda: node.getblockheader('nonsense'))
  67
  68         besthash = node.getbestblockhash()
  69         secondbesthash = node.getblockhash(199)
  70         header = node.getblockheader(besthash)
  71
  72         assert_equal(header['hash'], besthash)
  73         assert_equal(header['height'], 200)
  74         assert_equal(header['confirmations'], 1)
  75         assert_equal(header['previousblockhash'], secondbesthash)
  76         assert_is_hex_string(header['chainwork'])
  77         assert_is_hash_string(header['hash'])
  78         assert_is_hash_string(header['previousblockhash'])
  79         assert_is_hash_string(header['merkleroot'])
  80         assert_is_hash_string(header['bits'], length=None)
  81         assert isinstance(header['time'], int)
  82         assert isinstance(header['mediantime'], int)
  83         assert isinstance(header['nonce'], int)
  84         assert isinstance(header['version'], int)
  85         assert isinstance(int(header['versionHex'], 16), int)
  86         assert isinstance(header['difficulty'], Decimal)
  87
  88 if __name__ == '__main__':
  89     BlockchainTest().main()