diff options
Diffstat (limited to 'src/wallet/test/coinselector_tests.cpp')
| -rw-r--r-- | src/wallet/test/coinselector_tests.cpp | 248 |
1 files changed, 128 insertions, 120 deletions
diff --git a/src/wallet/test/coinselector_tests.cpp b/src/wallet/test/coinselector_tests.cpp index b9f12158ca..2a08c8ab57 100644 --- a/src/wallet/test/coinselector_tests.cpp +++ b/src/wallet/test/coinselector_tests.cpp @@ -28,20 +28,20 @@ BOOST_FIXTURE_TEST_SUITE(coinselector_tests, WalletTestingSetup) // we repeat those tests this many times and only complain if all iterations of the test fail #define RANDOM_REPEATS 5 -typedef std::set<CInputCoin> CoinSet; +typedef std::set<COutput> CoinSet; static const CoinEligibilityFilter filter_standard(1, 6, 0); static const CoinEligibilityFilter filter_confirmed(1, 1, 0); static const CoinEligibilityFilter filter_standard_extra(6, 6, 0); static int nextLockTime = 0; -static void add_coin(const CAmount& nValue, int nInput, std::vector<CInputCoin>& set) +static void add_coin(const CAmount& nValue, int nInput, std::vector<COutput>& set) { CMutableTransaction tx; tx.vout.resize(nInput + 1); tx.vout[nInput].nValue = nValue; tx.nLockTime = nextLockTime++; // so all transactions get different hashes - set.emplace_back(MakeTransactionRef(tx), nInput); + set.emplace_back(COutPoint(tx.GetHash(), nInput), tx.vout.at(nInput), /*depth=*/ 1, /*input_bytes=*/ -1, /*spendable=*/ true, /*solvable=*/ true, /*safe=*/ true, /*time=*/ 0, /*from_me=*/ false); } static void add_coin(const CAmount& nValue, int nInput, SelectionResult& result) @@ -50,9 +50,9 @@ static void add_coin(const CAmount& nValue, int nInput, SelectionResult& result) tx.vout.resize(nInput + 1); tx.vout[nInput].nValue = nValue; tx.nLockTime = nextLockTime++; // so all transactions get different hashes - CInputCoin coin(MakeTransactionRef(tx), nInput); + COutput output(COutPoint(tx.GetHash(), nInput), tx.vout.at(nInput), /*depth=*/ 1, /*input_bytes=*/ -1, /*spendable=*/ true, /*solvable=*/ true, /*safe=*/ true, /*time=*/ 0, /*from_me=*/ false); OutputGroup group; - group.Insert(coin, 1, false, 0, 0, true); + group.Insert(output, /*ancestors=*/ 0, /*descendants=*/ 0, /*positive_only=*/ true); result.AddInput(group); } @@ -62,10 +62,10 @@ static void add_coin(const CAmount& nValue, int nInput, CoinSet& set, CAmount fe tx.vout.resize(nInput + 1); tx.vout[nInput].nValue = nValue; tx.nLockTime = nextLockTime++; // so all transactions get different hashes - CInputCoin coin(MakeTransactionRef(tx), nInput); + COutput coin(COutPoint(tx.GetHash(), nInput), tx.vout.at(nInput), /*depth=*/ 1, /*input_bytes=*/ -1, /*spendable=*/ true, /*solvable=*/ true, /*safe=*/ true, /*time=*/ 0, /*from_me=*/ false); coin.effective_value = nValue - fee; - coin.m_fee = fee; - coin.m_long_term_fee = long_term_fee; + coin.fee = fee; + coin.long_term_fee = long_term_fee; set.insert(coin); } @@ -82,24 +82,13 @@ static void add_coin(std::vector<COutput>& coins, CWallet& wallet, const CAmount assert(destination_ok); tx.vout[nInput].scriptPubKey = GetScriptForDestination(dest); } - if (fIsFromMe) { - // IsFromMe() returns (GetDebit() > 0), and GetDebit() is 0 if vin.empty(), - // so stop vin being empty, and cache a non-zero Debit to fake out IsFromMe() - tx.vin.resize(1); - } uint256 txid = tx.GetHash(); LOCK(wallet.cs_wallet); auto ret = wallet.mapWallet.emplace(std::piecewise_construct, std::forward_as_tuple(txid), std::forward_as_tuple(MakeTransactionRef(std::move(tx)), TxStateInactive{})); assert(ret.second); CWalletTx& wtx = (*ret.first).second; - if (fIsFromMe) - { - wtx.m_amounts[CWalletTx::DEBIT].Set(ISMINE_SPENDABLE, 1); - wtx.m_is_cache_empty = false; - } - COutput output(wallet, wtx, nInput, nAge, true /* spendable */, true /* solvable */, true /* safe */); - coins.push_back(output); + coins.emplace_back(COutPoint(wtx.GetHash(), nInput), wtx.tx->vout.at(nInput), nAge, GetTxSpendSize(wallet, wtx, nInput), /*spendable=*/ true, /*solvable=*/ true, /*safe=*/ true, wtx.GetTxTime(), fIsFromMe); } /** Check if SelectionResult a is equivalent to SelectionResult b. @@ -124,11 +113,14 @@ static bool EquivalentResult(const SelectionResult& a, const SelectionResult& b) /** Check if this selection is equal to another one. Equal means same inputs (i.e same value and prevout) */ static bool EqualResult(const SelectionResult& a, const SelectionResult& b) { - std::pair<CoinSet::iterator, CoinSet::iterator> ret = std::mismatch(a.GetInputSet().begin(), a.GetInputSet().end(), b.GetInputSet().begin()); + std::pair<CoinSet::iterator, CoinSet::iterator> ret = std::mismatch(a.GetInputSet().begin(), a.GetInputSet().end(), b.GetInputSet().begin(), + [](const COutput& a, const COutput& b) { + return a.outpoint == b.outpoint; + }); return ret.first == a.GetInputSet().end() && ret.second == b.GetInputSet().end(); } -static CAmount make_hard_case(int utxos, std::vector<CInputCoin>& utxo_pool) +static CAmount make_hard_case(int utxos, std::vector<COutput>& utxo_pool) { utxo_pool.clear(); CAmount target = 0; @@ -140,34 +132,31 @@ static CAmount make_hard_case(int utxos, std::vector<CInputCoin>& utxo_pool) return target; } -inline std::vector<OutputGroup>& GroupCoins(const std::vector<CInputCoin>& coins) -{ - static std::vector<OutputGroup> static_groups; - static_groups.clear(); - for (auto& coin : coins) { - static_groups.emplace_back(); - static_groups.back().Insert(coin, 0, true, 0, 0, false); - } - return static_groups; -} - inline std::vector<OutputGroup>& GroupCoins(const std::vector<COutput>& coins) { static std::vector<OutputGroup> static_groups; static_groups.clear(); for (auto& coin : coins) { static_groups.emplace_back(); - static_groups.back().Insert(coin.GetInputCoin(), coin.nDepth, coin.tx->m_amounts[CWalletTx::DEBIT].m_cached[ISMINE_SPENDABLE] && coin.tx->m_amounts[CWalletTx::DEBIT].m_value[ISMINE_SPENDABLE] == 1 /* HACK: we can't figure out the is_me flag so we use the conditions defined above; perhaps set safe to false for !fIsFromMe in add_coin() */, 0, 0, false); + static_groups.back().Insert(coin, /*ancestors=*/ 0, /*descendants=*/ 0, /*positive_only=*/ false); } return static_groups; } inline std::vector<OutputGroup>& KnapsackGroupOutputs(const std::vector<COutput>& coins, CWallet& wallet, const CoinEligibilityFilter& filter) { - CoinSelectionParams coin_selection_params(/* change_output_size= */ 0, - /* change_spend_size= */ 0, /* effective_feerate= */ CFeeRate(0), - /* long_term_feerate= */ CFeeRate(0), /* discard_feerate= */ CFeeRate(0), - /* tx_noinputs_size= */ 0, /* avoid_partial= */ false); + FastRandomContext rand{}; + CoinSelectionParams coin_selection_params{ + rand, + /*change_output_size=*/ 0, + /*change_spend_size=*/ 0, + /*min_change_target=*/ CENT, + /*effective_feerate=*/ CFeeRate(0), + /*long_term_feerate=*/ CFeeRate(0), + /*discard_feerate=*/ CFeeRate(0), + /*tx_noinputs_size=*/ 0, + /*avoid_partial=*/ false, + }; static std::vector<OutputGroup> static_groups; static_groups = GroupOutputs(wallet, coins, coin_selection_params, filter, /*positive_only=*/false); return static_groups; @@ -176,8 +165,9 @@ inline std::vector<OutputGroup>& KnapsackGroupOutputs(const std::vector<COutput> // Branch and bound coin selection tests BOOST_AUTO_TEST_CASE(bnb_search_test) { + FastRandomContext rand{}; // Setup - std::vector<CInputCoin> utxo_pool; + std::vector<COutput> utxo_pool; SelectionResult expected_result(CAmount(0)); ///////////////////////// @@ -301,10 +291,17 @@ BOOST_AUTO_TEST_CASE(bnb_search_test) } // Make sure that effective value is working in AttemptSelection when BnB is used - CoinSelectionParams coin_selection_params_bnb(/* change_output_size= */ 0, - /* change_spend_size= */ 0, /* effective_feerate= */ CFeeRate(3000), - /* long_term_feerate= */ CFeeRate(1000), /* discard_feerate= */ CFeeRate(1000), - /* tx_noinputs_size= */ 0, /* avoid_partial= */ false); + CoinSelectionParams coin_selection_params_bnb{ + rand, + /*change_output_size=*/ 0, + /*change_spend_size=*/ 0, + /*min_change_target=*/ 0, + /*effective_feerate=*/ CFeeRate(3000), + /*long_term_feerate=*/ CFeeRate(1000), + /*discard_feerate=*/ CFeeRate(1000), + /*tx_noinputs_size=*/ 0, + /*avoid_partial=*/ false, + }; { std::unique_ptr<CWallet> wallet = std::make_unique<CWallet>(m_node.chain.get(), "", m_args, CreateMockWalletDatabase()); wallet->LoadWallet(); @@ -315,13 +312,13 @@ BOOST_AUTO_TEST_CASE(bnb_search_test) std::vector<COutput> coins; add_coin(coins, *wallet, 1); - coins.at(0).nInputBytes = 40; // Make sure that it has a negative effective value. The next check should assert if this somehow got through. Otherwise it will fail + coins.at(0).input_bytes = 40; // Make sure that it has a negative effective value. The next check should assert if this somehow got through. Otherwise it will fail BOOST_CHECK(!SelectCoinsBnB(GroupCoins(coins), 1 * CENT, coin_selection_params_bnb.m_cost_of_change)); // Test fees subtracted from output: coins.clear(); add_coin(coins, *wallet, 1 * CENT); - coins.at(0).nInputBytes = 40; + coins.at(0).input_bytes = 40; coin_selection_params_bnb.m_subtract_fee_outputs = true; const auto result9 = SelectCoinsBnB(GroupCoins(coins), 1 * CENT, coin_selection_params_bnb.m_cost_of_change); BOOST_CHECK(result9); @@ -342,7 +339,7 @@ BOOST_AUTO_TEST_CASE(bnb_search_test) add_coin(coins, *wallet, 2 * CENT, 6 * 24, false, 0, true); CCoinControl coin_control; coin_control.fAllowOtherInputs = true; - coin_control.Select(COutPoint(coins.at(0).tx->GetHash(), coins.at(0).i)); + coin_control.Select(coins.at(0).outpoint); coin_selection_params_bnb.m_effective_feerate = CFeeRate(0); const auto result10 = SelectCoins(*wallet, coins, 10 * CENT, coin_control, coin_selection_params_bnb); BOOST_CHECK(result10); @@ -351,6 +348,9 @@ BOOST_AUTO_TEST_CASE(bnb_search_test) BOOST_AUTO_TEST_CASE(knapsack_solver_test) { + FastRandomContext rand{}; + const auto temp1{[&rand](std::vector<OutputGroup>& g, const CAmount& v, CAmount c) { return KnapsackSolver(g, v, c, rand); }}; + const auto KnapsackSolver{temp1}; std::unique_ptr<CWallet> wallet = std::make_unique<CWallet>(m_node.chain.get(), "", m_args, CreateMockWalletDatabase()); wallet->LoadWallet(); LOCK(wallet->cs_wallet); @@ -365,25 +365,25 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) coins.clear(); // with an empty wallet we can't even pay one cent - BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 1 * CENT)); + BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 1 * CENT, CENT)); add_coin(coins, *wallet, 1*CENT, 4); // add a new 1 cent coin // with a new 1 cent coin, we still can't find a mature 1 cent - BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 1 * CENT)); + BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 1 * CENT, CENT)); // but we can find a new 1 cent - const auto result1 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * CENT); + const auto result1 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * CENT, CENT); BOOST_CHECK(result1); BOOST_CHECK_EQUAL(result1->GetSelectedValue(), 1 * CENT); add_coin(coins, *wallet, 2*CENT); // add a mature 2 cent coin // we can't make 3 cents of mature coins - BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 3 * CENT)); + BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 3 * CENT, CENT)); // we can make 3 cents of new coins - const auto result2 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 3 * CENT); + const auto result2 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 3 * CENT, CENT); BOOST_CHECK(result2); BOOST_CHECK_EQUAL(result2->GetSelectedValue(), 3 * CENT); @@ -394,38 +394,38 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) // now we have new: 1+10=11 (of which 10 was self-sent), and mature: 2+5+20=27. total = 38 // we can't make 38 cents only if we disallow new coins: - BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 38 * CENT)); + BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 38 * CENT, CENT)); // we can't even make 37 cents if we don't allow new coins even if they're from us - BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard_extra), 38 * CENT)); + BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard_extra), 38 * CENT, CENT)); // but we can make 37 cents if we accept new coins from ourself - const auto result3 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 37 * CENT); + const auto result3 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 37 * CENT, CENT); BOOST_CHECK(result3); BOOST_CHECK_EQUAL(result3->GetSelectedValue(), 37 * CENT); // and we can make 38 cents if we accept all new coins - const auto result4 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 38 * CENT); + const auto result4 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 38 * CENT, CENT); BOOST_CHECK(result4); BOOST_CHECK_EQUAL(result4->GetSelectedValue(), 38 * CENT); // try making 34 cents from 1,2,5,10,20 - we can't do it exactly - const auto result5 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 34 * CENT); + const auto result5 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 34 * CENT, CENT); BOOST_CHECK(result5); BOOST_CHECK_EQUAL(result5->GetSelectedValue(), 35 * CENT); // but 35 cents is closest BOOST_CHECK_EQUAL(result5->GetInputSet().size(), 3U); // the best should be 20+10+5. it's incredibly unlikely the 1 or 2 got included (but possible) // when we try making 7 cents, the smaller coins (1,2,5) are enough. We should see just 2+5 - const auto result6 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 7 * CENT); + const auto result6 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 7 * CENT, CENT); BOOST_CHECK(result6); BOOST_CHECK_EQUAL(result6->GetSelectedValue(), 7 * CENT); BOOST_CHECK_EQUAL(result6->GetInputSet().size(), 2U); // when we try making 8 cents, the smaller coins (1,2,5) are exactly enough. - const auto result7 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 8 * CENT); + const auto result7 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 8 * CENT, CENT); BOOST_CHECK(result7); BOOST_CHECK(result7->GetSelectedValue() == 8 * CENT); BOOST_CHECK_EQUAL(result7->GetInputSet().size(), 3U); // when we try making 9 cents, no subset of smaller coins is enough, and we get the next bigger coin (10) - const auto result8 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 9 * CENT); + const auto result8 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 9 * CENT, CENT); BOOST_CHECK(result8); BOOST_CHECK_EQUAL(result8->GetSelectedValue(), 10 * CENT); BOOST_CHECK_EQUAL(result8->GetInputSet().size(), 1U); @@ -440,12 +440,12 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) add_coin(coins, *wallet, 30*CENT); // now we have 6+7+8+20+30 = 71 cents total // check that we have 71 and not 72 - const auto result9 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 71 * CENT); + const auto result9 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 71 * CENT, CENT); BOOST_CHECK(result9); - BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 72 * CENT)); + BOOST_CHECK(!KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 72 * CENT, CENT)); // now try making 16 cents. the best smaller coins can do is 6+7+8 = 21; not as good at the next biggest coin, 20 - const auto result10 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 16 * CENT); + const auto result10 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 16 * CENT, CENT); BOOST_CHECK(result10); BOOST_CHECK_EQUAL(result10->GetSelectedValue(), 20 * CENT); // we should get 20 in one coin BOOST_CHECK_EQUAL(result10->GetInputSet().size(), 1U); @@ -453,7 +453,7 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) add_coin(coins, *wallet, 5*CENT); // now we have 5+6+7+8+20+30 = 75 cents total // now if we try making 16 cents again, the smaller coins can make 5+6+7 = 18 cents, better than the next biggest coin, 20 - const auto result11 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 16 * CENT); + const auto result11 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 16 * CENT, CENT); BOOST_CHECK(result11); BOOST_CHECK_EQUAL(result11->GetSelectedValue(), 18 * CENT); // we should get 18 in 3 coins BOOST_CHECK_EQUAL(result11->GetInputSet().size(), 3U); @@ -461,13 +461,13 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) add_coin(coins, *wallet, 18*CENT); // now we have 5+6+7+8+18+20+30 // and now if we try making 16 cents again, the smaller coins can make 5+6+7 = 18 cents, the same as the next biggest coin, 18 - const auto result12 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 16 * CENT); + const auto result12 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 16 * CENT, CENT); BOOST_CHECK(result12); BOOST_CHECK_EQUAL(result12->GetSelectedValue(), 18 * CENT); // we should get 18 in 1 coin BOOST_CHECK_EQUAL(result12->GetInputSet().size(), 1U); // because in the event of a tie, the biggest coin wins // now try making 11 cents. we should get 5+6 - const auto result13 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 11 * CENT); + const auto result13 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 11 * CENT, CENT); BOOST_CHECK(result13); BOOST_CHECK_EQUAL(result13->GetSelectedValue(), 11 * CENT); BOOST_CHECK_EQUAL(result13->GetInputSet().size(), 2U); @@ -477,12 +477,12 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) add_coin(coins, *wallet, 2*COIN); add_coin(coins, *wallet, 3*COIN); add_coin(coins, *wallet, 4*COIN); // now we have 5+6+7+8+18+20+30+100+200+300+400 = 1094 cents - const auto result14 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 95 * CENT); + const auto result14 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 95 * CENT, CENT); BOOST_CHECK(result14); BOOST_CHECK_EQUAL(result14->GetSelectedValue(), 1 * COIN); // we should get 1 BTC in 1 coin BOOST_CHECK_EQUAL(result14->GetInputSet().size(), 1U); - const auto result15 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 195 * CENT); + const auto result15 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 195 * CENT, CENT); BOOST_CHECK(result15); BOOST_CHECK_EQUAL(result15->GetSelectedValue(), 2 * COIN); // we should get 2 BTC in 1 coin BOOST_CHECK_EQUAL(result15->GetInputSet().size(), 1U); @@ -490,34 +490,34 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) // empty the wallet and start again, now with fractions of a cent, to test small change avoidance coins.clear(); - add_coin(coins, *wallet, MIN_CHANGE * 1 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 2 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 3 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 4 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 5 / 10); - - // try making 1 * MIN_CHANGE from the 1.5 * MIN_CHANGE - // we'll get change smaller than MIN_CHANGE whatever happens, so can expect MIN_CHANGE exactly - const auto result16 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), MIN_CHANGE); + add_coin(coins, *wallet, CENT * 1 / 10); + add_coin(coins, *wallet, CENT * 2 / 10); + add_coin(coins, *wallet, CENT * 3 / 10); + add_coin(coins, *wallet, CENT * 4 / 10); + add_coin(coins, *wallet, CENT * 5 / 10); + + // try making 1 * CENT from the 1.5 * CENT + // we'll get change smaller than CENT whatever happens, so can expect CENT exactly + const auto result16 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), CENT, CENT); BOOST_CHECK(result16); - BOOST_CHECK_EQUAL(result16->GetSelectedValue(), MIN_CHANGE); + BOOST_CHECK_EQUAL(result16->GetSelectedValue(), CENT); // but if we add a bigger coin, small change is avoided - add_coin(coins, *wallet, 1111*MIN_CHANGE); + add_coin(coins, *wallet, 1111*CENT); // try making 1 from 0.1 + 0.2 + 0.3 + 0.4 + 0.5 + 1111 = 1112.5 - const auto result17 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * MIN_CHANGE); + const auto result17 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * CENT, CENT); BOOST_CHECK(result17); - BOOST_CHECK_EQUAL(result17->GetSelectedValue(), 1 * MIN_CHANGE); // we should get the exact amount + BOOST_CHECK_EQUAL(result17->GetSelectedValue(), 1 * CENT); // we should get the exact amount // if we add more small coins: - add_coin(coins, *wallet, MIN_CHANGE * 6 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 7 / 10); + add_coin(coins, *wallet, CENT * 6 / 10); + add_coin(coins, *wallet, CENT * 7 / 10); - // and try again to make 1.0 * MIN_CHANGE - const auto result18 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * MIN_CHANGE); + // and try again to make 1.0 * CENT + const auto result18 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * CENT, CENT); BOOST_CHECK(result18); - BOOST_CHECK_EQUAL(result18->GetSelectedValue(), 1 * MIN_CHANGE); // we should get the exact amount + BOOST_CHECK_EQUAL(result18->GetSelectedValue(), 1 * CENT); // we should get the exact amount // run the 'mtgox' test (see https://blockexplorer.com/tx/29a3efd3ef04f9153d47a990bd7b048a4b2d213daaa5fb8ed670fb85f13bdbcf) // they tried to consolidate 10 50k coins into one 500k coin, and ended up with 50k in change @@ -525,52 +525,52 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) for (int j = 0; j < 20; j++) add_coin(coins, *wallet, 50000 * COIN); - const auto result19 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 500000 * COIN); + const auto result19 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 500000 * COIN, CENT); BOOST_CHECK(result19); BOOST_CHECK_EQUAL(result19->GetSelectedValue(), 500000 * COIN); // we should get the exact amount BOOST_CHECK_EQUAL(result19->GetInputSet().size(), 10U); // in ten coins - // if there's not enough in the smaller coins to make at least 1 * MIN_CHANGE change (0.5+0.6+0.7 < 1.0+1.0), + // if there's not enough in the smaller coins to make at least 1 * CENT change (0.5+0.6+0.7 < 1.0+1.0), // we need to try finding an exact subset anyway // sometimes it will fail, and so we use the next biggest coin: coins.clear(); - add_coin(coins, *wallet, MIN_CHANGE * 5 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 6 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 7 / 10); - add_coin(coins, *wallet, 1111 * MIN_CHANGE); - const auto result20 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * MIN_CHANGE); + add_coin(coins, *wallet, CENT * 5 / 10); + add_coin(coins, *wallet, CENT * 6 / 10); + add_coin(coins, *wallet, CENT * 7 / 10); + add_coin(coins, *wallet, 1111 * CENT); + const auto result20 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 1 * CENT, CENT); BOOST_CHECK(result20); - BOOST_CHECK_EQUAL(result20->GetSelectedValue(), 1111 * MIN_CHANGE); // we get the bigger coin + BOOST_CHECK_EQUAL(result20->GetSelectedValue(), 1111 * CENT); // we get the bigger coin BOOST_CHECK_EQUAL(result20->GetInputSet().size(), 1U); // but sometimes it's possible, and we use an exact subset (0.4 + 0.6 = 1.0) coins.clear(); - add_coin(coins, *wallet, MIN_CHANGE * 4 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 6 / 10); - add_coin(coins, *wallet, MIN_CHANGE * 8 / 10); - add_coin(coins, *wallet, 1111 * MIN_CHANGE); - const auto result21 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), MIN_CHANGE); + add_coin(coins, *wallet, CENT * 4 / 10); + add_coin(coins, *wallet, CENT * 6 / 10); + add_coin(coins, *wallet, CENT * 8 / 10); + add_coin(coins, *wallet, 1111 * CENT); + const auto result21 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), CENT, CENT); BOOST_CHECK(result21); - BOOST_CHECK_EQUAL(result21->GetSelectedValue(), MIN_CHANGE); // we should get the exact amount + BOOST_CHECK_EQUAL(result21->GetSelectedValue(), CENT); // we should get the exact amount BOOST_CHECK_EQUAL(result21->GetInputSet().size(), 2U); // in two coins 0.4+0.6 // test avoiding small change coins.clear(); - add_coin(coins, *wallet, MIN_CHANGE * 5 / 100); - add_coin(coins, *wallet, MIN_CHANGE * 1); - add_coin(coins, *wallet, MIN_CHANGE * 100); + add_coin(coins, *wallet, CENT * 5 / 100); + add_coin(coins, *wallet, CENT * 1); + add_coin(coins, *wallet, CENT * 100); // trying to make 100.01 from these three coins - const auto result22 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), MIN_CHANGE * 10001 / 100); + const auto result22 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), CENT * 10001 / 100, CENT); BOOST_CHECK(result22); - BOOST_CHECK_EQUAL(result22->GetSelectedValue(), MIN_CHANGE * 10105 / 100); // we should get all coins + BOOST_CHECK_EQUAL(result22->GetSelectedValue(), CENT * 10105 / 100); // we should get all coins BOOST_CHECK_EQUAL(result22->GetInputSet().size(), 3U); // but if we try to make 99.9, we should take the bigger of the two small coins to avoid small change - const auto result23 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), MIN_CHANGE * 9990 / 100); + const auto result23 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), CENT * 9990 / 100, CENT); BOOST_CHECK(result23); - BOOST_CHECK_EQUAL(result23->GetSelectedValue(), 101 * MIN_CHANGE); + BOOST_CHECK_EQUAL(result23->GetSelectedValue(), 101 * CENT); BOOST_CHECK_EQUAL(result23->GetInputSet().size(), 2U); } @@ -583,12 +583,12 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) // We only create the wallet once to save time, but we still run the coin selection RUN_TESTS times. for (int i = 0; i < RUN_TESTS; i++) { - const auto result24 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 2000); + const auto result24 = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_confirmed), 2000, CENT); BOOST_CHECK(result24); - if (amt - 2000 < MIN_CHANGE) { + if (amt - 2000 < CENT) { // needs more than one input: - uint16_t returnSize = std::ceil((2000.0 + MIN_CHANGE)/amt); + uint16_t returnSize = std::ceil((2000.0 + CENT)/amt); CAmount returnValue = amt * returnSize; BOOST_CHECK_EQUAL(result24->GetSelectedValue(), returnValue); BOOST_CHECK_EQUAL(result24->GetInputSet().size(), returnSize); @@ -610,9 +610,9 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) for (int i = 0; i < RUN_TESTS; i++) { // picking 50 from 100 coins doesn't depend on the shuffle, // but does depend on randomness in the stochastic approximation code - const auto result25 = KnapsackSolver(GroupCoins(coins), 50 * COIN); + const auto result25 = KnapsackSolver(GroupCoins(coins), 50 * COIN, CENT); BOOST_CHECK(result25); - const auto result26 = KnapsackSolver(GroupCoins(coins), 50 * COIN); + const auto result26 = KnapsackSolver(GroupCoins(coins), 50 * COIN, CENT); BOOST_CHECK(result26); BOOST_CHECK(!EqualResult(*result25, *result26)); @@ -623,9 +623,9 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) // When choosing 1 from 100 identical coins, 1% of the time, this test will choose the same coin twice // which will cause it to fail. // To avoid that issue, run the test RANDOM_REPEATS times and only complain if all of them fail - const auto result27 = KnapsackSolver(GroupCoins(coins), COIN); + const auto result27 = KnapsackSolver(GroupCoins(coins), COIN, CENT); BOOST_CHECK(result27); - const auto result28 = KnapsackSolver(GroupCoins(coins), COIN); + const auto result28 = KnapsackSolver(GroupCoins(coins), COIN, CENT); BOOST_CHECK(result28); if (EqualResult(*result27, *result28)) fails++; @@ -646,9 +646,9 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) int fails = 0; for (int j = 0; j < RANDOM_REPEATS; j++) { - const auto result29 = KnapsackSolver(GroupCoins(coins), 90 * CENT); + const auto result29 = KnapsackSolver(GroupCoins(coins), 90 * CENT, CENT); BOOST_CHECK(result29); - const auto result30 = KnapsackSolver(GroupCoins(coins), 90 * CENT); + const auto result30 = KnapsackSolver(GroupCoins(coins), 90 * CENT, CENT); BOOST_CHECK(result30); if (EqualResult(*result29, *result30)) fails++; @@ -660,6 +660,7 @@ BOOST_AUTO_TEST_CASE(knapsack_solver_test) BOOST_AUTO_TEST_CASE(ApproximateBestSubset) { + FastRandomContext rand{}; std::unique_ptr<CWallet> wallet = std::make_unique<CWallet>(m_node.chain.get(), "", m_args, CreateMockWalletDatabase()); wallet->LoadWallet(); LOCK(wallet->cs_wallet); @@ -673,7 +674,7 @@ BOOST_AUTO_TEST_CASE(ApproximateBestSubset) add_coin(coins, *wallet, 1000 * COIN); add_coin(coins, *wallet, 3 * COIN); - const auto result = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 1003 * COIN); + const auto result = KnapsackSolver(KnapsackGroupOutputs(coins, *wallet, filter_standard), 1003 * COIN, CENT, rand); BOOST_CHECK(result); BOOST_CHECK_EQUAL(result->GetSelectedValue(), 1003 * COIN); BOOST_CHECK_EQUAL(result->GetInputSet().size(), 2U); @@ -714,10 +715,17 @@ BOOST_AUTO_TEST_CASE(SelectCoins_test) CAmount target = rand.randrange(balance - 1000) + 1000; // Perform selection - CoinSelectionParams cs_params(/* change_output_size= */ 34, - /* change_spend_size= */ 148, /* effective_feerate= */ CFeeRate(0), - /* long_term_feerate= */ CFeeRate(0), /* discard_feerate= */ CFeeRate(0), - /* tx_noinputs_size= */ 0, /* avoid_partial= */ false); + CoinSelectionParams cs_params{ + rand, + /*change_output_size=*/ 34, + /*change_spend_size=*/ 148, + /*min_change_target=*/ CENT, + /*effective_feerate=*/ CFeeRate(0), + /*long_term_feerate=*/ CFeeRate(0), + /*discard_feerate=*/ CFeeRate(0), + /*tx_noinputs_size=*/ 0, + /*avoid_partial=*/ false, + }; CCoinControl cc; const auto result = SelectCoins(*wallet, coins, target, cc, cs_params); BOOST_CHECK(result); |