aboutsummaryrefslogtreecommitdiff
path: root/test/functional/blockchain.py
blob: d4851eea4940b365dbd45f401b39ace9ecfb8125 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
#!/usr/bin/env python3
# Copyright (c) 2014-2016 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 RPCs related to blockchainstate.

Test the following RPCs:
    - gettxoutsetinfo
    - getdifficulty
    - getbestblockhash
    - getblockhash
    - getblockheader
    - getchaintxstats
    - getnetworkhashps
    - verifychain

Tests correspond to code in rpc/blockchain.cpp.
"""

from decimal import Decimal
import http.client
import subprocess

from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
    assert_equal,
    assert_raises,
    assert_raises_rpc_error,
    assert_is_hex_string,
    assert_is_hash_string,
)

class BlockchainTest(BitcoinTestFramework):
    def set_test_params(self):
        self.num_nodes = 1
        self.extra_args = [['-stopatheight=207', '-prune=1']]

    def run_test(self):
        self._test_getblockchaininfo()
        self._test_getchaintxstats()
        self._test_gettxoutsetinfo()
        self._test_getblockheader()
        self._test_getdifficulty()
        self._test_getnetworkhashps()
        self._test_stopatheight()
        assert self.nodes[0].verifychain(4, 0)

    def _test_getblockchaininfo(self):
        self.log.info("Test getblockchaininfo")

        keys = [
            'bestblockhash',
            'bip9_softforks',
            'blocks',
            'chain',
            'chainwork',
            'difficulty',
            'headers',
            'mediantime',
            'pruned',
            'softforks',
            'verificationprogress',
            'warnings',
        ]
        res = self.nodes[0].getblockchaininfo()
        # result should have pruneheight and default keys if pruning is enabled
        assert_equal(sorted(res.keys()), sorted(['pruneheight'] + keys))
        # pruneheight should be greater or equal to 0
        assert res['pruneheight'] >= 0

        self.restart_node(0, ['-stopatheight=207'])
        res = self.nodes[0].getblockchaininfo()
        # should have exact keys
        assert_equal(sorted(res.keys()), keys)

    def _test_getchaintxstats(self):
        chaintxstats = self.nodes[0].getchaintxstats(1)
        # 200 txs plus genesis tx
        assert_equal(chaintxstats['txcount'], 201)
        # tx rate should be 1 per 10 minutes, or 1/600
        # we have to round because of binary math
        assert_equal(round(chaintxstats['txrate'] * 600, 10), Decimal(1))

        b1 = self.nodes[0].getblock(self.nodes[0].getblockhash(1))
        b200 = self.nodes[0].getblock(self.nodes[0].getblockhash(200))
        time_diff = b200['mediantime'] - b1['mediantime']

        chaintxstats = self.nodes[0].getchaintxstats()
        assert_equal(chaintxstats['time'], b200['time'])
        assert_equal(chaintxstats['txcount'], 201)
        assert_equal(chaintxstats['window_block_count'], 199)
        assert_equal(chaintxstats['window_tx_count'], 199)
        assert_equal(chaintxstats['window_interval'], time_diff)
        assert_equal(round(chaintxstats['txrate'] * time_diff, 10), Decimal(199))

        chaintxstats = self.nodes[0].getchaintxstats(blockhash=b1['hash'])
        assert_equal(chaintxstats['time'], b1['time'])
        assert_equal(chaintxstats['txcount'], 2)
        assert_equal(chaintxstats['window_block_count'], 0)
        assert('window_tx_count' not in chaintxstats)
        assert('window_interval' not in chaintxstats)
        assert('txrate' not in chaintxstats)

        assert_raises_rpc_error(-8, "Invalid block count: should be between 0 and the block's height - 1", self.nodes[0].getchaintxstats, 201)

    def _test_gettxoutsetinfo(self):
        node = self.nodes[0]
        res = node.gettxoutsetinfo()

        assert_equal(res['total_amount'], Decimal('8725.00000000'))
        assert_equal(res['transactions'], 200)
        assert_equal(res['height'], 200)
        assert_equal(res['txouts'], 200)
        assert_equal(res['bogosize'], 17000),
        assert_equal(res['bestblock'], node.getblockhash(200))
        size = res['disk_size']
        assert size > 6400
        assert size < 64000
        assert_equal(len(res['bestblock']), 64)
        assert_equal(len(res['hash_serialized_2']), 64)

        self.log.info("Test that gettxoutsetinfo() works for blockchain with just the genesis block")
        b1hash = node.getblockhash(1)
        node.invalidateblock(b1hash)

        res2 = node.gettxoutsetinfo()
        assert_equal(res2['transactions'], 0)
        assert_equal(res2['total_amount'], Decimal('0'))
        assert_equal(res2['height'], 0)
        assert_equal(res2['txouts'], 0)
        assert_equal(res2['bogosize'], 0),
        assert_equal(res2['bestblock'], node.getblockhash(0))
        assert_equal(len(res2['hash_serialized_2']), 64)

        self.log.info("Test that gettxoutsetinfo() returns the same result after invalidate/reconsider block")
        node.reconsiderblock(b1hash)

        res3 = node.gettxoutsetinfo()
        assert_equal(res['total_amount'], res3['total_amount'])
        assert_equal(res['transactions'], res3['transactions'])
        assert_equal(res['height'], res3['height'])
        assert_equal(res['txouts'], res3['txouts'])
        assert_equal(res['bogosize'], res3['bogosize'])
        assert_equal(res['bestblock'], res3['bestblock'])
        assert_equal(res['hash_serialized_2'], res3['hash_serialized_2'])

    def _test_getblockheader(self):
        node = self.nodes[0]

        assert_raises_rpc_error(-5, "Block not found",
                              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(int(header['versionHex'], 16), int)
        assert isinstance(header['difficulty'], Decimal)

    def _test_getdifficulty(self):
        difficulty = self.nodes[0].getdifficulty()
        # 1 hash in 2 should be valid, so difficulty should be 1/2**31
        # binary => decimal => binary math is why we do this check
        assert abs(difficulty * 2**31 - 1) < 0.0001

    def _test_getnetworkhashps(self):
        hashes_per_second = self.nodes[0].getnetworkhashps()
        # This should be 2 hashes every 10 minutes or 1/300
        assert abs(hashes_per_second * 300 - 1) < 0.0001

    def _test_stopatheight(self):
        assert_equal(self.nodes[0].getblockcount(), 200)
        self.nodes[0].generate(6)
        assert_equal(self.nodes[0].getblockcount(), 206)
        self.log.debug('Node should not stop at this height')
        assert_raises(subprocess.TimeoutExpired, lambda: self.nodes[0].process.wait(timeout=3))
        try:
            self.nodes[0].generate(1)
        except (ConnectionError, http.client.BadStatusLine):
            pass  # The node already shut down before response
        self.log.debug('Node should stop at this height...')
        self.nodes[0].wait_until_stopped()
        self.start_node(0)
        assert_equal(self.nodes[0].getblockcount(), 207)


if __name__ == '__main__':
    BlockchainTest().main()