forked from bitcoin/bitcoin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
rbf_tests.cpp
229 lines (201 loc) · 12.2 KB
/
rbf_tests.cpp
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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
// Copyright (c) 2021-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <common/system.h>
#include <policy/rbf.h>
#include <random.h>
#include <test/util/txmempool.h>
#include <txmempool.h>
#include <util/time.h>
#include <test/util/setup_common.h>
#include <boost/test/unit_test.hpp>
#include <optional>
#include <vector>
BOOST_FIXTURE_TEST_SUITE(rbf_tests, TestingSetup)
static inline CTransactionRef make_tx(const std::vector<CTransactionRef>& inputs,
const std::vector<CAmount>& output_values)
{
CMutableTransaction tx = CMutableTransaction();
tx.vin.resize(inputs.size());
tx.vout.resize(output_values.size());
for (size_t i = 0; i < inputs.size(); ++i) {
tx.vin[i].prevout.hash = inputs[i]->GetHash();
tx.vin[i].prevout.n = 0;
// Add a witness so wtxid != txid
CScriptWitness witness;
witness.stack.emplace_back(i + 10);
tx.vin[i].scriptWitness = witness;
}
for (size_t i = 0; i < output_values.size(); ++i) {
tx.vout[i].scriptPubKey = CScript() << OP_11 << OP_EQUAL;
tx.vout[i].nValue = output_values[i];
}
return MakeTransactionRef(tx);
}
static void add_descendants(const CTransactionRef& tx, int32_t num_descendants, CTxMemPool& pool)
EXCLUSIVE_LOCKS_REQUIRED(::cs_main, pool.cs)
{
AssertLockHeld(::cs_main);
AssertLockHeld(pool.cs);
TestMemPoolEntryHelper entry;
// Assumes this isn't already spent in mempool
auto tx_to_spend = tx;
for (int32_t i{0}; i < num_descendants; ++i) {
auto next_tx = make_tx(/*inputs=*/{tx_to_spend}, /*output_values=*/{(50 - i) * CENT});
pool.addUnchecked(entry.FromTx(next_tx));
tx_to_spend = next_tx;
}
}
BOOST_FIXTURE_TEST_CASE(rbf_helper_functions, TestChain100Setup)
{
CTxMemPool& pool = *Assert(m_node.mempool);
LOCK2(::cs_main, pool.cs);
TestMemPoolEntryHelper entry;
const CAmount low_fee{CENT/100};
const CAmount normal_fee{CENT/10};
const CAmount high_fee{CENT};
// Create a parent tx1 and child tx2 with normal fees:
const auto tx1 = make_tx(/*inputs=*/ {m_coinbase_txns[0]}, /*output_values=*/ {10 * COIN});
pool.addUnchecked(entry.Fee(normal_fee).FromTx(tx1));
const auto tx2 = make_tx(/*inputs=*/ {tx1}, /*output_values=*/ {995 * CENT});
pool.addUnchecked(entry.Fee(normal_fee).FromTx(tx2));
// Create a low-feerate parent tx3 and high-feerate child tx4 (cpfp)
const auto tx3 = make_tx(/*inputs=*/ {m_coinbase_txns[1]}, /*output_values=*/ {1099 * CENT});
pool.addUnchecked(entry.Fee(low_fee).FromTx(tx3));
const auto tx4 = make_tx(/*inputs=*/ {tx3}, /*output_values=*/ {999 * CENT});
pool.addUnchecked(entry.Fee(high_fee).FromTx(tx4));
// Create a parent tx5 and child tx6 where both have very low fees
const auto tx5 = make_tx(/*inputs=*/ {m_coinbase_txns[2]}, /*output_values=*/ {1099 * CENT});
pool.addUnchecked(entry.Fee(low_fee).FromTx(tx5));
const auto tx6 = make_tx(/*inputs=*/ {tx5}, /*output_values=*/ {1098 * CENT});
pool.addUnchecked(entry.Fee(low_fee).FromTx(tx6));
// Make tx6's modified fee much higher than its base fee. This should cause it to pass
// the fee-related checks despite being low-feerate.
pool.PrioritiseTransaction(tx6->GetHash(), 1 * COIN);
// Two independent high-feerate transactions, tx7 and tx8
const auto tx7 = make_tx(/*inputs=*/ {m_coinbase_txns[3]}, /*output_values=*/ {999 * CENT});
pool.addUnchecked(entry.Fee(high_fee).FromTx(tx7));
const auto tx8 = make_tx(/*inputs=*/ {m_coinbase_txns[4]}, /*output_values=*/ {999 * CENT});
pool.addUnchecked(entry.Fee(high_fee).FromTx(tx8));
const auto entry1 = pool.GetIter(tx1->GetHash()).value();
const auto entry2 = pool.GetIter(tx2->GetHash()).value();
const auto entry3 = pool.GetIter(tx3->GetHash()).value();
const auto entry4 = pool.GetIter(tx4->GetHash()).value();
const auto entry5 = pool.GetIter(tx5->GetHash()).value();
const auto entry6 = pool.GetIter(tx6->GetHash()).value();
const auto entry7 = pool.GetIter(tx7->GetHash()).value();
const auto entry8 = pool.GetIter(tx8->GetHash()).value();
BOOST_CHECK_EQUAL(entry1->GetFee(), normal_fee);
BOOST_CHECK_EQUAL(entry2->GetFee(), normal_fee);
BOOST_CHECK_EQUAL(entry3->GetFee(), low_fee);
BOOST_CHECK_EQUAL(entry4->GetFee(), high_fee);
BOOST_CHECK_EQUAL(entry5->GetFee(), low_fee);
BOOST_CHECK_EQUAL(entry6->GetFee(), low_fee);
BOOST_CHECK_EQUAL(entry7->GetFee(), high_fee);
BOOST_CHECK_EQUAL(entry8->GetFee(), high_fee);
CTxMemPool::setEntries set_12_normal{entry1, entry2};
CTxMemPool::setEntries set_34_cpfp{entry3, entry4};
CTxMemPool::setEntries set_56_low{entry5, entry6};
CTxMemPool::setEntries all_entries{entry1, entry2, entry3, entry4, entry5, entry6, entry7, entry8};
CTxMemPool::setEntries empty_set;
const auto unused_txid{GetRandHash()};
// Tests for PaysMoreThanConflicts
// These tests use feerate, not absolute fee.
BOOST_CHECK(PaysMoreThanConflicts(/*iters_conflicting=*/set_12_normal,
/*replacement_feerate=*/CFeeRate(entry1->GetModifiedFee() + 1, entry1->GetTxSize() + 2),
/*txid=*/unused_txid).has_value());
// Replacement must be strictly greater than the originals.
BOOST_CHECK(PaysMoreThanConflicts(set_12_normal, CFeeRate(entry1->GetModifiedFee(), entry1->GetTxSize()), unused_txid).has_value());
BOOST_CHECK(PaysMoreThanConflicts(set_12_normal, CFeeRate(entry1->GetModifiedFee() + 1, entry1->GetTxSize()), unused_txid) == std::nullopt);
// These tests use modified fees (including prioritisation), not base fees.
BOOST_CHECK(PaysMoreThanConflicts({entry5}, CFeeRate(entry5->GetModifiedFee() + 1, entry5->GetTxSize()), unused_txid) == std::nullopt);
BOOST_CHECK(PaysMoreThanConflicts({entry6}, CFeeRate(entry6->GetFee() + 1, entry6->GetTxSize()), unused_txid).has_value());
BOOST_CHECK(PaysMoreThanConflicts({entry6}, CFeeRate(entry6->GetModifiedFee() + 1, entry6->GetTxSize()), unused_txid) == std::nullopt);
// PaysMoreThanConflicts checks individual feerate, not ancestor feerate. This test compares
// replacement_feerate and entry4's feerate, which are the same. The replacement_feerate is
// considered too low even though entry4 has a low ancestor feerate.
BOOST_CHECK(PaysMoreThanConflicts(set_34_cpfp, CFeeRate(entry4->GetModifiedFee(), entry4->GetTxSize()), unused_txid).has_value());
// Tests for EntriesAndTxidsDisjoint
BOOST_CHECK(EntriesAndTxidsDisjoint(empty_set, {tx1->GetHash()}, unused_txid) == std::nullopt);
BOOST_CHECK(EntriesAndTxidsDisjoint(set_12_normal, {tx3->GetHash()}, unused_txid) == std::nullopt);
BOOST_CHECK(EntriesAndTxidsDisjoint({entry2}, {tx2->GetHash()}, unused_txid).has_value());
BOOST_CHECK(EntriesAndTxidsDisjoint(set_12_normal, {tx1->GetHash()}, unused_txid).has_value());
BOOST_CHECK(EntriesAndTxidsDisjoint(set_12_normal, {tx2->GetHash()}, unused_txid).has_value());
// EntriesAndTxidsDisjoint does not calculate descendants of iters_conflicting; it uses whatever
// the caller passed in. As such, no error is returned even though entry2 is a descendant of tx1.
BOOST_CHECK(EntriesAndTxidsDisjoint({entry2}, {tx1->GetHash()}, unused_txid) == std::nullopt);
// Tests for PaysForRBF
const CFeeRate incremental_relay_feerate{DEFAULT_INCREMENTAL_RELAY_FEE};
const CFeeRate higher_relay_feerate{2 * DEFAULT_INCREMENTAL_RELAY_FEE};
// Must pay at least as much as the original.
BOOST_CHECK(PaysForRBF(/*original_fees=*/high_fee,
/*replacement_fees=*/high_fee,
/*replacement_vsize=*/1,
/*relay_fee=*/CFeeRate(0),
/*txid=*/unused_txid)
== std::nullopt);
BOOST_CHECK(PaysForRBF(high_fee, high_fee - 1, 1, CFeeRate(0), unused_txid).has_value());
BOOST_CHECK(PaysForRBF(high_fee + 1, high_fee, 1, CFeeRate(0), unused_txid).has_value());
// Additional fees must cover the replacement's vsize at incremental relay fee
BOOST_CHECK(PaysForRBF(high_fee, high_fee + 1, 2, incremental_relay_feerate, unused_txid).has_value());
BOOST_CHECK(PaysForRBF(high_fee, high_fee + 2, 2, incremental_relay_feerate, unused_txid) == std::nullopt);
BOOST_CHECK(PaysForRBF(high_fee, high_fee + 2, 2, higher_relay_feerate, unused_txid).has_value());
BOOST_CHECK(PaysForRBF(high_fee, high_fee + 4, 2, higher_relay_feerate, unused_txid) == std::nullopt);
BOOST_CHECK(PaysForRBF(low_fee, high_fee, 99999999, incremental_relay_feerate, unused_txid).has_value());
BOOST_CHECK(PaysForRBF(low_fee, high_fee + 99999999, 99999999, incremental_relay_feerate, unused_txid) == std::nullopt);
// Tests for GetEntriesForConflicts
CTxMemPool::setEntries all_parents{entry1, entry3, entry5, entry7, entry8};
CTxMemPool::setEntries all_children{entry2, entry4, entry6};
const std::vector<CTransactionRef> parent_inputs({m_coinbase_txns[0], m_coinbase_txns[1], m_coinbase_txns[2],
m_coinbase_txns[3], m_coinbase_txns[4]});
const auto conflicts_with_parents = make_tx(parent_inputs, {50 * CENT});
CTxMemPool::setEntries all_conflicts;
BOOST_CHECK(GetEntriesForConflicts(/*tx=*/ *conflicts_with_parents.get(),
/*pool=*/ pool,
/*iters_conflicting=*/ all_parents,
/*all_conflicts=*/ all_conflicts) == std::nullopt);
BOOST_CHECK(all_conflicts == all_entries);
auto conflicts_size = all_conflicts.size();
all_conflicts.clear();
add_descendants(tx2, 23, pool);
BOOST_CHECK(GetEntriesForConflicts(*conflicts_with_parents.get(), pool, all_parents, all_conflicts) == std::nullopt);
conflicts_size += 23;
BOOST_CHECK_EQUAL(all_conflicts.size(), conflicts_size);
all_conflicts.clear();
add_descendants(tx4, 23, pool);
BOOST_CHECK(GetEntriesForConflicts(*conflicts_with_parents.get(), pool, all_parents, all_conflicts) == std::nullopt);
conflicts_size += 23;
BOOST_CHECK_EQUAL(all_conflicts.size(), conflicts_size);
all_conflicts.clear();
add_descendants(tx6, 23, pool);
BOOST_CHECK(GetEntriesForConflicts(*conflicts_with_parents.get(), pool, all_parents, all_conflicts) == std::nullopt);
conflicts_size += 23;
BOOST_CHECK_EQUAL(all_conflicts.size(), conflicts_size);
all_conflicts.clear();
add_descendants(tx7, 23, pool);
BOOST_CHECK(GetEntriesForConflicts(*conflicts_with_parents.get(), pool, all_parents, all_conflicts) == std::nullopt);
conflicts_size += 23;
BOOST_CHECK_EQUAL(all_conflicts.size(), conflicts_size);
BOOST_CHECK_EQUAL(all_conflicts.size(), 100);
all_conflicts.clear();
// Exceeds maximum number of conflicts.
add_descendants(tx8, 1, pool);
BOOST_CHECK(GetEntriesForConflicts(*conflicts_with_parents.get(), pool, all_parents, all_conflicts).has_value());
// Tests for HasNoNewUnconfirmed
const auto spends_unconfirmed = make_tx({tx1}, {36 * CENT});
for (const auto& input : spends_unconfirmed->vin) {
// Spends unconfirmed inputs.
BOOST_CHECK(pool.exists(GenTxid::Txid(input.prevout.hash)));
}
BOOST_CHECK(HasNoNewUnconfirmed(/*tx=*/ *spends_unconfirmed.get(),
/*pool=*/ pool,
/*iters_conflicting=*/ all_entries) == std::nullopt);
BOOST_CHECK(HasNoNewUnconfirmed(*spends_unconfirmed.get(), pool, {entry2}) == std::nullopt);
BOOST_CHECK(HasNoNewUnconfirmed(*spends_unconfirmed.get(), pool, empty_set).has_value());
const auto spends_new_unconfirmed = make_tx({tx1, tx8}, {36 * CENT});
BOOST_CHECK(HasNoNewUnconfirmed(*spends_new_unconfirmed.get(), pool, {entry2}).has_value());
BOOST_CHECK(HasNoNewUnconfirmed(*spends_new_unconfirmed.get(), pool, all_entries).has_value());
const auto spends_conflicting_confirmed = make_tx({m_coinbase_txns[0], m_coinbase_txns[1]}, {45 * CENT});
BOOST_CHECK(HasNoNewUnconfirmed(*spends_conflicting_confirmed.get(), pool, {entry1, entry3}) == std::nullopt);
}
BOOST_AUTO_TEST_SUITE_END()