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#!/usr/bin/env python2
# Copyright (c) 2014-2015 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 calls related to blockchain state. Tests correspond to code in
# rpc/blockchain.cpp.
#
from decimal import Decimal
from test_framework.test_framework import BitcoinTestFramework
from test_framework.authproxy import JSONRPCException
from test_framework.util import (
initialize_chain,
assert_equal,
assert_raises,
assert_is_hex_string,
assert_is_hash_string,
start_nodes,
connect_nodes_bi,
)
class BlockchainTest(BitcoinTestFramework):
"""
Test blockchain-related RPC calls:
- gettxoutsetinfo
"""
def setup_chain(self):
print("Initializing test directory " + self.options.tmpdir)
initialize_chain(self.options.tmpdir)
def setup_network(self, split=False):
self.nodes = start_nodes(2, self.options.tmpdir)
connect_nodes_bi(self.nodes, 0, 1)
self.is_network_split = False
self.sync_all()
def run_test(self):
self._test_gettxoutsetinfo()
self._test_getblockheader()
def _test_gettxoutsetinfo(self):
node = self.nodes[0]
res = node.gettxoutsetinfo()
assert_equal(res[u'total_amount'], Decimal('8725.00000000'))
assert_equal(res[u'transactions'], 200)
assert_equal(res[u'height'], 200)
assert_equal(res[u'txouts'], 200)
assert_equal(res[u'bytes_serialized'], 13924),
assert_equal(len(res[u'bestblock']), 64)
assert_equal(len(res[u'hash_serialized']), 64)
def _test_getblockheader(self):
node = self.nodes[0]
assert_raises(
JSONRPCException, lambda: node.getblockheader('nonsense'))
besthash = node.getbestblockhash()
secondbesthash = node.getblockhash(199)
header = node.getblockheader(besthash)
assert_equal(header['hash'], besthash)
assert_equal(header['height'], 200)
assert_equal(header['confirmations'], 1)
assert_equal(header['previousblockhash'], secondbesthash)
assert_is_hex_string(header['chainwork'])
assert_is_hash_string(header['hash'])
assert_is_hash_string(header['previousblockhash'])
assert_is_hash_string(header['merkleroot'])
assert_is_hash_string(header['bits'], length=None)
assert isinstance(header['time'], int)
assert isinstance(header['mediantime'], int)
assert isinstance(header['nonce'], int)
assert isinstance(header['version'], int)
assert isinstance(header['difficulty'], Decimal)
if __name__ == '__main__':
BlockchainTest().main()
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