highperfocused/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-11-12 06:58:57 +01:00
Code Issues Packages Projects Releases Wiki Activity

refactor coin selection for parameterizable change target

Browse Source 
no behavior changes, since the target is always MIN_CHANGE
This commit is contained in:
glozow
2022-03-07 13:45:06 +00:00
parent c9b5790e8d
commit 1e52e6bd0a
5 changed files with 109 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files

143
src/wallet/test/coinselector_tests.cpp
View File

@@ -150,6 +150,7 @@ inline std::vector<OutputGroup>& KnapsackGroupOutputs(const std::vector<COutput>
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),
@@ -294,6 +295,7 @@ BOOST_AUTO_TEST_CASE(bnb_search_test)
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),
@@ -347,7 +349,7 @@ 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) { return KnapsackSolver(g, v, 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();
@@ -363,25 +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);
@@ -392,38 +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);
@@ -438,12 +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);
@@ -451,7 +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);
@@ -459,13 +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);
@@ -475,12 +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);
@@ -488,34 +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);
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 * 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);
// 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
@@ -523,52 +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);
}
@@ -581,12 +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);
@@ -608,9 +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));
@@ -621,9 +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++;
@@ -644,9 +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++;
@@ -672,7 +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, rand);
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);
@@ -717,6 +719,7 @@ BOOST_AUTO_TEST_CASE(SelectCoins_test)
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),