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
|
#!/usr/bin/env python3
# Copyright (c) 2021 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 simulaterawtransaction.
"""
from decimal import Decimal
from test_framework.blocktools import COINBASE_MATURITY
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_approx,
assert_equal,
assert_raises_rpc_error,
)
class SimulateTxTest(BitcoinTestFramework):
def add_options(self, parser):
self.add_wallet_options(parser)
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def setup_network(self, split=False):
self.setup_nodes()
def run_test(self):
node = self.nodes[0]
self.generate(node, 1, sync_fun=self.no_op) # Leave IBD
node.createwallet(wallet_name='w0')
node.createwallet(wallet_name='w1')
node.createwallet(wallet_name='w2', disable_private_keys=True)
w0 = node.get_wallet_rpc('w0')
w1 = node.get_wallet_rpc('w1')
w2 = node.get_wallet_rpc('w2')
self.generatetoaddress(node, COINBASE_MATURITY + 1, w0.getnewaddress())
assert_equal(w0.getbalance(), 50.0)
assert_equal(w1.getbalance(), 0.0)
address1 = w1.getnewaddress()
address2 = w1.getnewaddress()
# Add address1 as watch-only to w2
w2.importpubkey(pubkey=w1.getaddressinfo(address1)["pubkey"])
tx1 = node.createrawtransaction([], [{address1: 5.0}])
tx2 = node.createrawtransaction([], [{address2: 10.0}])
# w0 should be unaffected, w2 should see +5 for tx1
assert_equal(w0.simulaterawtransaction([tx1])["balance_change"], 0.0)
assert_equal(w2.simulaterawtransaction([tx1])["balance_change"], 5.0)
# w1 should see +5 balance for tx1
assert_equal(w1.simulaterawtransaction([tx1])["balance_change"], 5.0)
# w0 should be unaffected, w2 should see +5 for both transactions
assert_equal(w0.simulaterawtransaction([tx1, tx2])["balance_change"], 0.0)
assert_equal(w2.simulaterawtransaction([tx1, tx2])["balance_change"], 5.0)
# w1 should see +15 balance for both transactions
assert_equal(w1.simulaterawtransaction([tx1, tx2])["balance_change"], 15.0)
# w0 funds transaction; it should now see a decrease in (tx fee and payment), and w1 should see the same as above
funding = w0.fundrawtransaction(tx1)
tx1 = funding["hex"]
tx1changepos = funding["changepos"]
bitcoin_fee = Decimal(funding["fee"])
# w0 sees fee + 5 btc decrease, w2 sees + 5 btc
assert_approx(w0.simulaterawtransaction([tx1])["balance_change"], -(Decimal("5") + bitcoin_fee))
assert_approx(w2.simulaterawtransaction([tx1])["balance_change"], Decimal("5"))
# w1 sees same as before
assert_equal(w1.simulaterawtransaction([tx1])["balance_change"], 5.0)
# same inputs (tx) more than once should error
assert_raises_rpc_error(-8, "Transaction(s) are spending the same output more than once", w0.simulaterawtransaction, [tx1,tx1])
tx1ob = node.decoderawtransaction(tx1)
tx1hex = tx1ob["txid"]
tx1vout = 1 - tx1changepos
# tx3 spends new w1 UTXO paying to w0
tx3 = node.createrawtransaction([{"txid": tx1hex, "vout": tx1vout}], {w0.getnewaddress(): 4.9999})
# tx4 spends new w1 UTXO paying to w1
tx4 = node.createrawtransaction([{"txid": tx1hex, "vout": tx1vout}], {w1.getnewaddress(): 4.9999})
# on their own, both should fail due to missing input(s)
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w0.simulaterawtransaction, [tx3])
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w1.simulaterawtransaction, [tx3])
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w0.simulaterawtransaction, [tx4])
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w1.simulaterawtransaction, [tx4])
# they should succeed when including tx1:
# wallet tx3 tx4
# w0 -5 - bitcoin_fee + 4.9999 -5 - bitcoin_fee
# w1 0 +4.9999
assert_approx(w0.simulaterawtransaction([tx1, tx3])["balance_change"], -Decimal("5") - bitcoin_fee + Decimal("4.9999"))
assert_approx(w1.simulaterawtransaction([tx1, tx3])["balance_change"], 0)
assert_approx(w0.simulaterawtransaction([tx1, tx4])["balance_change"], -Decimal("5") - bitcoin_fee)
assert_approx(w1.simulaterawtransaction([tx1, tx4])["balance_change"], Decimal("4.9999"))
# they should fail if attempting to include both tx3 and tx4
assert_raises_rpc_error(-8, "Transaction(s) are spending the same output more than once", w0.simulaterawtransaction, [tx1, tx3, tx4])
assert_raises_rpc_error(-8, "Transaction(s) are spending the same output more than once", w1.simulaterawtransaction, [tx1, tx3, tx4])
# send tx1 to avoid reusing same UTXO below
node.sendrawtransaction(w0.signrawtransactionwithwallet(tx1)["hex"])
self.generate(node, 1, sync_fun=self.no_op) # Confirm tx to trigger error below
self.sync_all()
# w0 funds transaction 2; it should now see a decrease in (tx fee and payment), and w1 should see the same as above
funding = w0.fundrawtransaction(tx2)
tx2 = funding["hex"]
bitcoin_fee2 = Decimal(funding["fee"])
assert_approx(w0.simulaterawtransaction([tx2])["balance_change"], -(Decimal("10") + bitcoin_fee2))
assert_approx(w1.simulaterawtransaction([tx2])["balance_change"], +(Decimal("10")))
assert_approx(w2.simulaterawtransaction([tx2])["balance_change"], 0)
# w0-w2 error due to tx1 already being mined
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w0.simulaterawtransaction, [tx1, tx2])
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w1.simulaterawtransaction, [tx1, tx2])
assert_raises_rpc_error(-8, "One or more transaction inputs are missing or have been spent already", w2.simulaterawtransaction, [tx1, tx2])
if __name__ == '__main__':
SimulateTxTest().main()
|
