1 // Copyright (c) 2011-2019 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <chainparams.h>
6 #include <coins.h>
7 #include <consensus/consensus.h>
8 #include <consensus/merkle.h>
9 #include <consensus/tx_verify.h>
10 #include <miner.h>
11 #include <policy/policy.h>
12 #include <script/standard.h>
13 #include <txmempool.h>
14 #include <uint256.h>
15 #include <util/strencodings.h>
16 #include <util/system.h>
17 #include <util/time.h>
18 #include <validation.h>
19 
20 #include <test/util/setup_common.h>
21 
22 #include <memory>
23 
24 #include <boost/test/unit_test.hpp>
25 
26 namespace miner_tests {
27 struct MinerTestingSetup : public TestingSetup {
28     void TestPackageSelection(const CChainParams& chainparams, const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst) EXCLUSIVE_LOCKS_REQUIRED(::cs_main, m_node.mempool->cs);
TestSequenceLocksminer_tests::MinerTestingSetup29     bool TestSequenceLocks(const CTransaction& tx, int flags) EXCLUSIVE_LOCKS_REQUIRED(::cs_main, m_node.mempool->cs)
30     {
31         return CheckSequenceLocks(*m_node.mempool, tx, flags);
32     }
33     BlockAssembler AssemblerForTest(const CChainParams& params);
34 };
35 } // namespace miner_tests
36 
37 BOOST_FIXTURE_TEST_SUITE(miner_tests, MinerTestingSetup)
38 
39 static CFeeRate blockMinFeeRate = CFeeRate(DEFAULT_BLOCK_MIN_TX_FEE);
40 
AssemblerForTest(const CChainParams & params)41 BlockAssembler MinerTestingSetup::AssemblerForTest(const CChainParams& params)
42 {
43     BlockAssembler::Options options;
44 
45     options.nBlockMaxWeight = MAX_BLOCK_WEIGHT;
46     options.blockMinFeeRate = blockMinFeeRate;
47     return BlockAssembler(*m_node.mempool, params, options);
48 }
49 
50 constexpr static struct {
51     unsigned char extranonce;
52     unsigned int nonce;
53 } blockinfo[] = {
54     {4, 0xa4a3e223}, {2, 0x15c32f9e}, {1, 0x0375b547}, {1, 0x7004a8a5},
55     {2, 0xce440296}, {2, 0x52cfe198}, {1, 0x77a72cd0}, {2, 0xbb5d6f84},
56     {2, 0x83f30c2c}, {1, 0x48a73d5b}, {1, 0xef7dcd01}, {2, 0x6809c6c4},
57     {2, 0x0883ab3c}, {1, 0x087bbbe2}, {2, 0x2104a814}, {2, 0xdffb6daa},
58     {1, 0xee8a0a08}, {2, 0xba4237c1}, {1, 0xa70349dc}, {1, 0x344722bb},
59     {3, 0xd6294733}, {2, 0xec9f5c94}, {2, 0xca2fbc28}, {1, 0x6ba4f406},
60     {2, 0x015d4532}, {1, 0x6e119b7c}, {2, 0x43e8f314}, {2, 0x27962f38},
61     {2, 0xb571b51b}, {2, 0xb36bee23}, {2, 0xd17924a8}, {2, 0x6bc212d9},
62     {1, 0x630d4948}, {2, 0x9a4c4ebb}, {2, 0x554be537}, {1, 0xd63ddfc7},
63     {2, 0xa10acc11}, {1, 0x759a8363}, {2, 0xfb73090d}, {1, 0xe82c6a34},
64     {1, 0xe33e92d7}, {3, 0x658ef5cb}, {2, 0xba32ff22}, {5, 0x0227a10c},
65     {1, 0xa9a70155}, {5, 0xd096d809}, {1, 0x37176174}, {1, 0x830b8d0f},
66     {1, 0xc6e3910e}, {2, 0x823f3ca8}, {1, 0x99850849}, {1, 0x7521fb81},
67     {1, 0xaacaabab}, {1, 0xd645a2eb}, {5, 0x7aea1781}, {5, 0x9d6e4b78},
68     {1, 0x4ce90fd8}, {1, 0xabdc832d}, {6, 0x4a34f32a}, {2, 0xf2524c1c},
69     {2, 0x1bbeb08a}, {1, 0xad47f480}, {1, 0x9f026aeb}, {1, 0x15a95049},
70     {2, 0xd1cb95b2}, {2, 0xf84bbda5}, {1, 0x0fa62cd1}, {1, 0xe05f9169},
71     {1, 0x78d194a9}, {5, 0x3e38147b}, {5, 0x737ba0d4}, {1, 0x63378e10},
72     {1, 0x6d5f91cf}, {2, 0x88612eb8}, {2, 0xe9639484}, {1, 0xb7fabc9d},
73     {2, 0x19b01592}, {1, 0x5a90dd31}, {2, 0x5bd7e028}, {2, 0x94d00323},
74     {1, 0xa9b9c01a}, {1, 0x3a40de61}, {1, 0x56e7eec7}, {5, 0x859f7ef6},
75     {1, 0xfd8e5630}, {1, 0x2b0c9f7f}, {1, 0xba700e26}, {1, 0x7170a408},
76     {1, 0x70de86a8}, {1, 0x74d64cd5}, {1, 0x49e738a1}, {2, 0x6910b602},
77     {0, 0x643c565f}, {1, 0x54264b3f}, {2, 0x97ea6396}, {2, 0x55174459},
78     {2, 0x03e8779a}, {1, 0x98f34d8f}, {1, 0xc07b2b07}, {1, 0xdfe29668},
79     {1, 0x3141c7c1}, {1, 0xb3b595f4}, {1, 0x735abf08}, {5, 0x623bfbce},
80     {2, 0xd351e722}, {1, 0xf4ca48c9}, {1, 0x5b19c670}, {1, 0xa164bf0e},
81     {2, 0xbbbeb305}, {2, 0xfe1c810a},
82 };
83 
CreateBlockIndex(int nHeight)84 static CBlockIndex CreateBlockIndex(int nHeight) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
85 {
86     CBlockIndex index;
87     index.nHeight = nHeight;
88     index.pprev = ::ChainActive().Tip();
89     return index;
90 }
91 
92 // Test suite for ancestor feerate transaction selection.
93 // Implemented as an additional function, rather than a separate test case,
94 // to allow reusing the blockchain created in CreateNewBlock_validity.
TestPackageSelection(const CChainParams & chainparams,const CScript & scriptPubKey,const std::vector<CTransactionRef> & txFirst)95 void MinerTestingSetup::TestPackageSelection(const CChainParams& chainparams, const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst)
96 {
97     // Test the ancestor feerate transaction selection.
98     TestMemPoolEntryHelper entry;
99 
100     // Test that a medium fee transaction will be selected after a higher fee
101     // rate package with a low fee rate parent.
102     CMutableTransaction tx;
103     tx.vin.resize(1);
104     tx.vin[0].scriptSig = CScript() << OP_1;
105     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
106     tx.vin[0].prevout.n = 0;
107     tx.vout.resize(1);
108     tx.vout[0].nValue = 5000000000LL - 1000;
109     // This tx has a low fee: 1000 satoshis
110     uint256 hashParentTx = tx.GetHash(); // save this txid for later use
111     m_node.mempool->addUnchecked(entry.Fee(1000).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
112 
113     // This tx has a medium fee: 10000 satoshis
114     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
115     tx.vout[0].nValue = 5000000000LL - 10000;
116     uint256 hashMediumFeeTx = tx.GetHash();
117     m_node.mempool->addUnchecked(entry.Fee(10000).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
118 
119     // This tx has a high fee, but depends on the first transaction
120     tx.vin[0].prevout.hash = hashParentTx;
121     tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 50k satoshi fee
122     uint256 hashHighFeeTx = tx.GetHash();
123     m_node.mempool->addUnchecked(entry.Fee(50000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
124 
125     std::unique_ptr<CBlockTemplate> pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
126     BOOST_CHECK(pblocktemplate->block.vtx[1]->GetHash() == hashParentTx);
127     BOOST_CHECK(pblocktemplate->block.vtx[2]->GetHash() == hashHighFeeTx);
128     BOOST_CHECK(pblocktemplate->block.vtx[3]->GetHash() == hashMediumFeeTx);
129 
130     // Test that a package below the block min tx fee doesn't get included
131     tx.vin[0].prevout.hash = hashHighFeeTx;
132     tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 0 fee
133     uint256 hashFreeTx = tx.GetHash();
134     m_node.mempool->addUnchecked(entry.Fee(0).FromTx(tx));
135     size_t freeTxSize = ::GetSerializeSize(tx, PROTOCOL_VERSION);
136 
137     // Calculate a fee on child transaction that will put the package just
138     // below the block min tx fee (assuming 1 child tx of the same size).
139     CAmount feeToUse = blockMinFeeRate.GetFee(2*freeTxSize) - 1;
140 
141     tx.vin[0].prevout.hash = hashFreeTx;
142     tx.vout[0].nValue = 5000000000LL - 1000 - 50000 - feeToUse;
143     uint256 hashLowFeeTx = tx.GetHash();
144     m_node.mempool->addUnchecked(entry.Fee(feeToUse).FromTx(tx));
145     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
146     // Verify that the free tx and the low fee tx didn't get selected
147     for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
148         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx);
149         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx);
150     }
151 
152     // Test that packages above the min relay fee do get included, even if one
153     // of the transactions is below the min relay fee
154     // Remove the low fee transaction and replace with a higher fee transaction
155     m_node.mempool->removeRecursive(CTransaction(tx), MemPoolRemovalReason::REPLACED);
156     tx.vout[0].nValue -= 2; // Now we should be just over the min relay fee
157     hashLowFeeTx = tx.GetHash();
158     m_node.mempool->addUnchecked(entry.Fee(feeToUse+2).FromTx(tx));
159     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
160     BOOST_CHECK(pblocktemplate->block.vtx[4]->GetHash() == hashFreeTx);
161     BOOST_CHECK(pblocktemplate->block.vtx[5]->GetHash() == hashLowFeeTx);
162 
163     // Test that transaction selection properly updates ancestor fee
164     // calculations as ancestor transactions get included in a block.
165     // Add a 0-fee transaction that has 2 outputs.
166     tx.vin[0].prevout.hash = txFirst[2]->GetHash();
167     tx.vout.resize(2);
168     tx.vout[0].nValue = 5000000000LL - 100000000;
169     tx.vout[1].nValue = 100000000; // 1BTC output
170     uint256 hashFreeTx2 = tx.GetHash();
171     m_node.mempool->addUnchecked(entry.Fee(0).SpendsCoinbase(true).FromTx(tx));
172 
173     // This tx can't be mined by itself
174     tx.vin[0].prevout.hash = hashFreeTx2;
175     tx.vout.resize(1);
176     feeToUse = blockMinFeeRate.GetFee(freeTxSize);
177     tx.vout[0].nValue = 5000000000LL - 100000000 - feeToUse;
178     uint256 hashLowFeeTx2 = tx.GetHash();
179     m_node.mempool->addUnchecked(entry.Fee(feeToUse).SpendsCoinbase(false).FromTx(tx));
180     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
181 
182     // Verify that this tx isn't selected.
183     for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
184         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx2);
185         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx2);
186     }
187 
188     // This tx will be mineable, and should cause hashLowFeeTx2 to be selected
189     // as well.
190     tx.vin[0].prevout.n = 1;
191     tx.vout[0].nValue = 100000000 - 10000; // 10k satoshi fee
192     m_node.mempool->addUnchecked(entry.Fee(10000).FromTx(tx));
193     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
194     BOOST_CHECK(pblocktemplate->block.vtx[8]->GetHash() == hashLowFeeTx2);
195 }
196 
197 // NOTE: These tests rely on CreateNewBlock doing its own self-validation!
BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)198 BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
199 {
200     // Note that by default, these tests run with size accounting enabled.
201     const auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);
202     const CChainParams& chainparams = *chainParams;
203     CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
204     std::unique_ptr<CBlockTemplate> pblocktemplate;
205     CMutableTransaction tx;
206     CScript script;
207     uint256 hash;
208     TestMemPoolEntryHelper entry;
209     entry.nFee = 11;
210     entry.nHeight = 11;
211 
212     fCheckpointsEnabled = false;
213 
214     // Simple block creation, nothing special yet:
215     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
216 
217     // We can't make transactions until we have inputs
218     // Therefore, load 110 blocks :)
219     static_assert(sizeof(blockinfo) / sizeof(*blockinfo) == 110, "Should have 110 blocks to import");
220     int baseheight = 0;
221     std::vector<CTransactionRef> txFirst;
222     for (unsigned int i = 0; i < sizeof(blockinfo)/sizeof(*blockinfo); ++i)
223     {
224         CBlock *pblock = &pblocktemplate->block; // pointer for convenience
225         {
226             LOCK(cs_main);
227             pblock->nVersion = 1;
228             pblock->nTime = ::ChainActive().Tip()->GetMedianTimePast()+1;
229             CMutableTransaction txCoinbase(*pblock->vtx[0]);
230             txCoinbase.nVersion = 1;
231             txCoinbase.vin[0].scriptSig = CScript();
232             txCoinbase.vin[0].scriptSig.push_back(blockinfo[i].extranonce);
233             txCoinbase.vin[0].scriptSig.push_back(::ChainActive().Height());
234             txCoinbase.vout.resize(1); // Ignore the (optional) segwit commitment added by CreateNewBlock (as the hardcoded nonces don't account for this)
235             txCoinbase.vout[0].scriptPubKey = CScript();
236             pblock->vtx[0] = MakeTransactionRef(std::move(txCoinbase));
237             if (txFirst.size() == 0)
238                 baseheight = ::ChainActive().Height();
239             if (txFirst.size() < 4)
240                 txFirst.push_back(pblock->vtx[0]);
241             pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
242             pblock->nNonce = blockinfo[i].nonce;
243         }
244         std::shared_ptr<const CBlock> shared_pblock = std::make_shared<const CBlock>(*pblock);
245         BOOST_CHECK(Assert(m_node.chainman)->ProcessNewBlock(chainparams, shared_pblock, true, nullptr));
246         pblock->hashPrevBlock = pblock->GetHash();
247     }
248 
249     LOCK(cs_main);
250     LOCK(m_node.mempool->cs);
251 
252     // Just to make sure we can still make simple blocks
253     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
254 
255     const CAmount BLOCKSUBSIDY = 50*COIN;
256     const CAmount LOWFEE = CENT;
257     const CAmount HIGHFEE = COIN;
258     const CAmount HIGHERFEE = 4*COIN;
259 
260     // block sigops > limit: 1000 CHECKMULTISIG + 1
261     tx.vin.resize(1);
262     // NOTE: OP_NOP is used to force 20 SigOps for the CHECKMULTISIG
263     tx.vin[0].scriptSig = CScript() << OP_0 << OP_0 << OP_0 << OP_NOP << OP_CHECKMULTISIG << OP_1;
264     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
265     tx.vin[0].prevout.n = 0;
266     tx.vout.resize(1);
267     tx.vout[0].nValue = BLOCKSUBSIDY;
268     for (unsigned int i = 0; i < 1001; ++i)
269     {
270         tx.vout[0].nValue -= LOWFEE;
271         hash = tx.GetHash();
272         bool spendsCoinbase = i == 0; // only first tx spends coinbase
273         // If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails
274         m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
275         tx.vin[0].prevout.hash = hash;
276     }
277 
278     BOOST_CHECK_EXCEPTION(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-blk-sigops"));
279     m_node.mempool->clear();
280 
281     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
282     tx.vout[0].nValue = BLOCKSUBSIDY;
283     for (unsigned int i = 0; i < 1001; ++i)
284     {
285         tx.vout[0].nValue -= LOWFEE;
286         hash = tx.GetHash();
287         bool spendsCoinbase = i == 0; // only first tx spends coinbase
288         // If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes
289         m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOpsCost(80).FromTx(tx));
290         tx.vin[0].prevout.hash = hash;
291     }
292     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
293     m_node.mempool->clear();
294 
295     // block size > limit
296     tx.vin[0].scriptSig = CScript();
297     // 18 * (520char + DROP) + OP_1 = 9433 bytes
298     std::vector<unsigned char> vchData(520);
299     for (unsigned int i = 0; i < 18; ++i)
300         tx.vin[0].scriptSig << vchData << OP_DROP;
301     tx.vin[0].scriptSig << OP_1;
302     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
303     tx.vout[0].nValue = BLOCKSUBSIDY;
304     for (unsigned int i = 0; i < 128; ++i)
305     {
306         tx.vout[0].nValue -= LOWFEE;
307         hash = tx.GetHash();
308         bool spendsCoinbase = i == 0; // only first tx spends coinbase
309         m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
310         tx.vin[0].prevout.hash = hash;
311     }
312     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
313     m_node.mempool->clear();
314 
315     // orphan in *m_node.mempool, template creation fails
316     hash = tx.GetHash();
317     m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).FromTx(tx));
318     BOOST_CHECK_EXCEPTION(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-txns-inputs-missingorspent"));
319     m_node.mempool->clear();
320 
321     // child with higher feerate than parent
322     tx.vin[0].scriptSig = CScript() << OP_1;
323     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
324     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
325     hash = tx.GetHash();
326     m_node.mempool->addUnchecked(entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
327     tx.vin[0].prevout.hash = hash;
328     tx.vin.resize(2);
329     tx.vin[1].scriptSig = CScript() << OP_1;
330     tx.vin[1].prevout.hash = txFirst[0]->GetHash();
331     tx.vin[1].prevout.n = 0;
332     tx.vout[0].nValue = tx.vout[0].nValue+BLOCKSUBSIDY-HIGHERFEE; //First txn output + fresh coinbase - new txn fee
333     hash = tx.GetHash();
334     m_node.mempool->addUnchecked(entry.Fee(HIGHERFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
335     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
336     m_node.mempool->clear();
337 
338     // coinbase in *m_node.mempool, template creation fails
339     tx.vin.resize(1);
340     tx.vin[0].prevout.SetNull();
341     tx.vin[0].scriptSig = CScript() << OP_0 << OP_1;
342     tx.vout[0].nValue = 0;
343     hash = tx.GetHash();
344     // give it a fee so it'll get mined
345     m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
346     // Should throw bad-cb-multiple
347     BOOST_CHECK_EXCEPTION(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-cb-multiple"));
348     m_node.mempool->clear();
349 
350     // double spend txn pair in *m_node.mempool, template creation fails
351     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
352     tx.vin[0].scriptSig = CScript() << OP_1;
353     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
354     tx.vout[0].scriptPubKey = CScript() << OP_1;
355     hash = tx.GetHash();
356     m_node.mempool->addUnchecked(entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
357     tx.vout[0].scriptPubKey = CScript() << OP_2;
358     hash = tx.GetHash();
359     m_node.mempool->addUnchecked(entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
360     BOOST_CHECK_EXCEPTION(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-txns-inputs-missingorspent"));
361     m_node.mempool->clear();
362 
363     // subsidy changing
364     int nHeight = ::ChainActive().Height();
365     // Create an actual 209999-long block chain (without valid blocks).
366     while (::ChainActive().Tip()->nHeight < 209999) {
367         CBlockIndex* prev = ::ChainActive().Tip();
368         CBlockIndex* next = new CBlockIndex();
369         next->phashBlock = new uint256(InsecureRand256());
370         ::ChainstateActive().CoinsTip().SetBestBlock(next->GetBlockHash());
371         next->pprev = prev;
372         next->nHeight = prev->nHeight + 1;
373         next->BuildSkip();
374         ::ChainActive().SetTip(next);
375     }
376     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
377     // Extend to a 210000-long block chain.
378     while (::ChainActive().Tip()->nHeight < 210000) {
379         CBlockIndex* prev = ::ChainActive().Tip();
380         CBlockIndex* next = new CBlockIndex();
381         next->phashBlock = new uint256(InsecureRand256());
382         ::ChainstateActive().CoinsTip().SetBestBlock(next->GetBlockHash());
383         next->pprev = prev;
384         next->nHeight = prev->nHeight + 1;
385         next->BuildSkip();
386         ::ChainActive().SetTip(next);
387     }
388     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
389 
390     // invalid p2sh txn in *m_node.mempool, template creation fails
391     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
392     tx.vin[0].prevout.n = 0;
393     tx.vin[0].scriptSig = CScript() << OP_1;
394     tx.vout[0].nValue = BLOCKSUBSIDY-LOWFEE;
395     script = CScript() << OP_0;
396     tx.vout[0].scriptPubKey = GetScriptForDestination(ScriptHash(script));
397     hash = tx.GetHash();
398     m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
399     tx.vin[0].prevout.hash = hash;
400     tx.vin[0].scriptSig = CScript() << std::vector<unsigned char>(script.begin(), script.end());
401     tx.vout[0].nValue -= LOWFEE;
402     hash = tx.GetHash();
403     m_node.mempool->addUnchecked(entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
404     // Should throw block-validation-failed
405     BOOST_CHECK_EXCEPTION(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("block-validation-failed"));
406     m_node.mempool->clear();
407 
408     // Delete the dummy blocks again.
409     while (::ChainActive().Tip()->nHeight > nHeight) {
410         CBlockIndex* del = ::ChainActive().Tip();
411         ::ChainActive().SetTip(del->pprev);
412         ::ChainstateActive().CoinsTip().SetBestBlock(del->pprev->GetBlockHash());
413         delete del->phashBlock;
414         delete del;
415     }
416 
417     // non-final txs in mempool
418     SetMockTime(::ChainActive().Tip()->GetMedianTimePast()+1);
419     int flags = LOCKTIME_VERIFY_SEQUENCE|LOCKTIME_MEDIAN_TIME_PAST;
420     // height map
421     std::vector<int> prevheights;
422 
423     // relative height locked
424     tx.nVersion = 2;
425     tx.vin.resize(1);
426     prevheights.resize(1);
427     tx.vin[0].prevout.hash = txFirst[0]->GetHash(); // only 1 transaction
428     tx.vin[0].prevout.n = 0;
429     tx.vin[0].scriptSig = CScript() << OP_1;
430     tx.vin[0].nSequence = ::ChainActive().Tip()->nHeight + 1; // txFirst[0] is the 2nd block
431     prevheights[0] = baseheight + 1;
432     tx.vout.resize(1);
433     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
434     tx.vout[0].scriptPubKey = CScript() << OP_1;
435     tx.nLockTime = 0;
436     hash = tx.GetHash();
437     m_node.mempool->addUnchecked(entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
438     BOOST_CHECK(CheckFinalTx(CTransaction(tx), flags)); // Locktime passes
439     BOOST_CHECK(!TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks fail
440     BOOST_CHECK(SequenceLocks(CTransaction(tx), flags, prevheights, CreateBlockIndex(::ChainActive().Tip()->nHeight + 2))); // Sequence locks pass on 2nd block
441 
442     // relative time locked
443     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
444     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | (((::ChainActive().Tip()->GetMedianTimePast()+1-::ChainActive()[1]->GetMedianTimePast()) >> CTxIn::SEQUENCE_LOCKTIME_GRANULARITY) + 1); // txFirst[1] is the 3rd block
445     prevheights[0] = baseheight + 2;
446     hash = tx.GetHash();
447     m_node.mempool->addUnchecked(entry.Time(GetTime()).FromTx(tx));
448     BOOST_CHECK(CheckFinalTx(CTransaction(tx), flags)); // Locktime passes
449     BOOST_CHECK(!TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks fail
450 
451     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
452         ::ChainActive().Tip()->GetAncestor(::ChainActive().Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
453     BOOST_CHECK(SequenceLocks(CTransaction(tx), flags, prevheights, CreateBlockIndex(::ChainActive().Tip()->nHeight + 1))); // Sequence locks pass 512 seconds later
454     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
455         ::ChainActive().Tip()->GetAncestor(::ChainActive().Tip()->nHeight - i)->nTime -= 512; //undo tricked MTP
456 
457     // absolute height locked
458     tx.vin[0].prevout.hash = txFirst[2]->GetHash();
459     tx.vin[0].nSequence = CTxIn::SEQUENCE_FINAL - 1;
460     prevheights[0] = baseheight + 3;
461     tx.nLockTime = ::ChainActive().Tip()->nHeight + 1;
462     hash = tx.GetHash();
463     m_node.mempool->addUnchecked(entry.Time(GetTime()).FromTx(tx));
464     BOOST_CHECK(!CheckFinalTx(CTransaction(tx), flags)); // Locktime fails
465     BOOST_CHECK(TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks pass
466     BOOST_CHECK(IsFinalTx(CTransaction(tx), ::ChainActive().Tip()->nHeight + 2, ::ChainActive().Tip()->GetMedianTimePast())); // Locktime passes on 2nd block
467 
468     // absolute time locked
469     tx.vin[0].prevout.hash = txFirst[3]->GetHash();
470     tx.nLockTime = ::ChainActive().Tip()->GetMedianTimePast();
471     prevheights.resize(1);
472     prevheights[0] = baseheight + 4;
473     hash = tx.GetHash();
474     m_node.mempool->addUnchecked(entry.Time(GetTime()).FromTx(tx));
475     BOOST_CHECK(!CheckFinalTx(CTransaction(tx), flags)); // Locktime fails
476     BOOST_CHECK(TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks pass
477     BOOST_CHECK(IsFinalTx(CTransaction(tx), ::ChainActive().Tip()->nHeight + 2, ::ChainActive().Tip()->GetMedianTimePast() + 1)); // Locktime passes 1 second later
478 
479     // mempool-dependent transactions (not added)
480     tx.vin[0].prevout.hash = hash;
481     prevheights[0] = ::ChainActive().Tip()->nHeight + 1;
482     tx.nLockTime = 0;
483     tx.vin[0].nSequence = 0;
484     BOOST_CHECK(CheckFinalTx(CTransaction(tx), flags)); // Locktime passes
485     BOOST_CHECK(TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks pass
486     tx.vin[0].nSequence = 1;
487     BOOST_CHECK(!TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks fail
488     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG;
489     BOOST_CHECK(TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks pass
490     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | 1;
491     BOOST_CHECK(!TestSequenceLocks(CTransaction(tx), flags)); // Sequence locks fail
492 
493     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
494 
495     // None of the of the absolute height/time locked tx should have made
496     // it into the template because we still check IsFinalTx in CreateNewBlock,
497     // but relative locked txs will if inconsistently added to mempool.
498     // For now these will still generate a valid template until BIP68 soft fork
499     BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 3U);
500     // However if we advance height by 1 and time by 512, all of them should be mined
501     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
502         ::ChainActive().Tip()->GetAncestor(::ChainActive().Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
503     ::ChainActive().Tip()->nHeight++;
504     SetMockTime(::ChainActive().Tip()->GetMedianTimePast() + 1);
505 
506     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
507     BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 5U);
508 
509     ::ChainActive().Tip()->nHeight--;
510     SetMockTime(0);
511     m_node.mempool->clear();
512 
513     TestPackageSelection(chainparams, scriptPubKey, txFirst);
514 
515     fCheckpointsEnabled = true;
516 }
517 
518 BOOST_AUTO_TEST_SUITE_END()
519