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test: Move BnB feerate sensitivity tests

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Originally these tests verified that at a SelectCoins level that a
solution with fewer inputs gets preferred at high feerates, and a
solution with more inputs gets preferred at low feerates. This outcome
relies on the behavior of BnB, so we move these tests under the umbrella
of BnB tests.

Originally these tests relied on SFFO to work.
This commit is contained in:
Murch 2024-03-01 15:06:50 -05:00
parent f3b0593b8b
commit bfd2fe70ae
2 changed files with 17 additions and 36 deletions
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14
src/wallet/test/coinselection_tests.cpp
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@ -112,5 +112,19 @@ BOOST_AUTO_TEST_CASE(bnb_test)
TestBnBSuccess("Select upper bound", utxo_pool, /*selection_target=*/4 * CENT - default_cs_params.m_cost_of_change, /*expected_input_amounts=*/{1 * CENT, 3 * CENT});
}
BOOST_AUTO_TEST_CASE(bnb_feerate_sensitivity_test)
{
// Create sets of UTXOs with the same effective amounts at different feerates (but different absolute amounts)
std::vector<OutputGroup> low_feerate_pool; // 5 sat/vB (default, and lower than long_term_feerate of 10 sat/vB)
AddCoins(low_feerate_pool, {2 * CENT, 3 * CENT, 5 * CENT, 10 * CENT});
TestBnBSuccess("Select many inputs at low feerates", low_feerate_pool, /*selection_target=*/10 * CENT, /*expected_input_amounts=*/{2 * CENT, 3 * CENT, 5 * CENT});
CoinSelectionParams high_feerate_params = init_default_params();
high_feerate_params.m_effective_feerate = CFeeRate{25'000};
std::vector<OutputGroup> high_feerate_pool; // 25 sat/vB (greater than long_term_feerate of 10 sat/vB)
AddCoins(high_feerate_pool, {2 * CENT, 3 * CENT, 5 * CENT, 10 * CENT}, high_feerate_params);
TestBnBSuccess("Select one input at high feerates", high_feerate_pool, /*selection_target=*/10 * CENT, /*expected_input_amounts=*/{10 * CENT}, high_feerate_params);
}
BOOST_AUTO_TEST_SUITE_END()
} // namespace wallet

39
src/wallet/test/coinselector_tests.cpp
View file

@ -321,7 +321,7 @@ BOOST_AUTO_TEST_CASE(bnb_search_test)
CoinsResult available_coins;
// single coin should be selected when effective fee > long term fee
// pre selected coin should be selected even if disadvantageous
coin_selection_params_bnb.m_effective_feerate = CFeeRate(5000);
coin_selection_params_bnb.m_long_term_feerate = CFeeRate(3000);
@ -332,42 +332,9 @@ BOOST_AUTO_TEST_CASE(bnb_search_test)
add_coin(available_coins, *wallet, 1 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
expected_result.Clear();
add_coin(10 * CENT + input_fee, 2, expected_result);
add_coin(9 * CENT + input_fee, 2, expected_result);
add_coin(1 * CENT + input_fee, 2, expected_result);
CCoinControl coin_control;
const auto result11 = SelectCoins(*wallet, available_coins, /*pre_set_inputs=*/{}, 10 * CENT, coin_control, coin_selection_params_bnb);
BOOST_CHECK(EquivalentResult(expected_result, *result11));
available_coins.Clear();
// more coins should be selected when effective fee < long term fee
coin_selection_params_bnb.m_effective_feerate = CFeeRate(3000);
coin_selection_params_bnb.m_long_term_feerate = CFeeRate(5000);
// Add selectable outputs, increasing their raw amounts by their input fee to make the effective value equal to the raw amount
input_fee = coin_selection_params_bnb.m_effective_feerate.GetFee(/*num_bytes=*/68); // bech32 input size (default test output type)
add_coin(available_coins, *wallet, 10 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
add_coin(available_coins, *wallet, 9 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
add_coin(available_coins, *wallet, 1 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
expected_result.Clear();
add_coin(9 * CENT + input_fee, 2, expected_result);
add_coin(1 * CENT + input_fee, 2, expected_result);
const auto result12 = SelectCoins(*wallet, available_coins, /*pre_set_inputs=*/{}, 10 * CENT, coin_control, coin_selection_params_bnb);
BOOST_CHECK(EquivalentResult(expected_result, *result12));
available_coins.Clear();
// pre selected coin should be selected even if disadvantageous
coin_selection_params_bnb.m_effective_feerate = CFeeRate(5000);
coin_selection_params_bnb.m_long_term_feerate = CFeeRate(3000);
// Add selectable outputs, increasing their raw amounts by their input fee to make the effective value equal to the raw amount
input_fee = coin_selection_params_bnb.m_effective_feerate.GetFee(/*num_bytes=*/68); // bech32 input size (default test output type)
add_coin(available_coins, *wallet, 10 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
add_coin(available_coins, *wallet, 9 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
add_coin(available_coins, *wallet, 1 * CENT + input_fee, coin_selection_params_bnb.m_effective_feerate, 6 * 24, false, 0, true);
expected_result.Clear();
add_coin(9 * CENT + input_fee, 2, expected_result);
add_coin(1 * CENT + input_fee, 2, expected_result);
coin_control.m_allow_other_inputs = true;
COutput select_coin = available_coins.All().at(1); // pre select 9 coin
coin_control.Select(select_coin.outpoint);