wallet_create_tx.py raw
1 #!/usr/bin/env python3
2 # Copyright (c) 2018-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
6 from test_framework.messages import (
7 tx_from_hex,
8 )
9 from test_framework.test_framework import BitcoinTestFramework
10 from test_framework.util import (
11 assert_equal,
12 assert_raises_rpc_error,
13 )
14 from test_framework.blocktools import (
15 TIME_GENESIS_BLOCK,
16 )
17
18 from decimal import Decimal
19
20 class CreateTxWalletTest(BitcoinTestFramework):
21 def set_test_params(self):
22 self.setup_clean_chain = True
23 self.num_nodes = 1
24 self.extra_args = [[]]
25
26 def skip_test_if_missing_module(self):
27 self.skip_if_no_wallet()
28
29 def run_test(self):
30 self.log.info('Create some old blocks')
31 self.nodes[0].setmocktime(TIME_GENESIS_BLOCK)
32 self.generate(self.nodes[0], 200)
33 self.nodes[0].setmocktime(0)
34
35 self.test_anti_fee_sniping()
36 self.test_tx_size_too_large()
37 self.test_create_too_long_mempool_chain()
38 self.test_version3()
39
40 def test_anti_fee_sniping(self):
41 self.log.info('Check that we have some (old) blocks and that anti-fee-sniping is disabled')
42 assert_equal(self.nodes[0].getblockchaininfo()['blocks'], 200)
43 txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
44 tx = self.nodes[0].gettransaction(txid=txid, verbose=True)['decoded']
45 assert_equal(tx['locktime'], 0)
46
47 self.log.info('Check that anti-fee-sniping is enabled when we mine a recent block')
48 self.generate(self.nodes[0], 1)
49 txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
50 tx = self.nodes[0].gettransaction(txid=txid, verbose=True)['decoded']
51 assert 0 < tx['locktime'] <= 201
52
53 def test_tx_size_too_large(self):
54 # More than 10kB of outputs, so that we hit -maxtxfee with a high feerate
55 outputs = {self.nodes[0].getnewaddress(address_type='bech32'): 0.000025 for _ in range(400)}
56 raw_tx = self.nodes[0].createrawtransaction(inputs=[], outputs=outputs)
57
58 for fee_setting in ['-minrelaytxfee=0.01', '-mintxfee=0.01']:
59 self.log.info('Check maxtxfee in combination with {}'.format(fee_setting))
60 self.restart_node(0, extra_args=[fee_setting])
61 assert_raises_rpc_error(
62 -6,
63 "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
64 lambda: self.nodes[0].sendmany(dummy="", amounts=outputs),
65 )
66 assert_raises_rpc_error(
67 -4,
68 "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
69 lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
70 )
71
72 # Hit maxtxfee with explicit fee rate
73 self.log.info('Check maxtxfee in combination with explicit fee_rate=1000 sat/vB')
74
75 fee_rate_sats_per_vb = Decimal('0.01') * Decimal(1e8) / 1000 # Convert 0.01 BTC/kvB to sat/vB
76
77 assert_raises_rpc_error(
78 -6,
79 "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
80 lambda: self.nodes[0].sendmany(dummy="", amounts=outputs, fee_rate=fee_rate_sats_per_vb),
81 )
82 assert_raises_rpc_error(
83 -4,
84 "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
85 lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx, options={'fee_rate': fee_rate_sats_per_vb}),
86 )
87
88 def test_create_too_long_mempool_chain(self):
89 self.log.info('Check too-long mempool chain error')
90 df_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
91
92 self.nodes[0].createwallet("too_long")
93 test_wallet = self.nodes[0].get_wallet_rpc("too_long")
94
95 tx_data = df_wallet.send(outputs=[{test_wallet.getnewaddress(): 25}], options={"change_position": 0})
96 txid = tx_data['txid']
97 vout = 1
98
99 self.nodes[0].syncwithvalidationinterfacequeue()
100 options = {"change_position": 0, "add_inputs": False}
101 for i in range(1, 25):
102 options['inputs'] = [{'txid': txid, 'vout': vout}]
103 tx_data = test_wallet.send(outputs=[{test_wallet.getnewaddress(): 25 - i}], options=options)
104 txid = tx_data['txid']
105
106 # Sending one more chained transaction will fail
107 options = {"minconf": 0, "include_unsafe": True, 'add_inputs': True}
108 assert_raises_rpc_error(-4, "Unconfirmed UTXOs are available, but spending them creates a chain of transactions that will be rejected by the mempool",
109 test_wallet.send, outputs=[{test_wallet.getnewaddress(): 0.3}], options=options)
110
111 test_wallet.unloadwallet()
112
113 def test_version3(self):
114 self.log.info('Check wallet does not create transactions with version=3 yet')
115 wallet_rpc = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
116
117 self.nodes[0].createwallet("version3")
118 wallet_v3 = self.nodes[0].get_wallet_rpc("version3")
119
120 tx_data = wallet_rpc.send(outputs=[{wallet_v3.getnewaddress(): 25}], options={"change_position": 0})
121 wallet_tx_data = wallet_rpc.gettransaction(tx_data["txid"])
122 tx_current_version = tx_from_hex(wallet_tx_data["hex"])
123
124 # While version=3 transactions are standard, the CURRENT_VERSION is 2.
125 # This test can be removed if CURRENT_VERSION is changed, and replaced with tests that the
126 # wallet handles TRUC rules properly.
127 assert_equal(tx_current_version.version, 2)
128 wallet_v3.unloadwallet()
129
130
131 if __name__ == '__main__':
132 CreateTxWalletTest(__file__).main()
133