diff options
| -rw-r--r-- | src/wallet/test/coinselector_tests.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/wallet/test/coinselector_tests.cpp b/src/wallet/test/coinselector_tests.cpp index 85f3cd7f3c..9dd17c8e48 100644 --- a/src/wallet/test/coinselector_tests.cpp +++ b/src/wallet/test/coinselector_tests.cpp @@ -867,7 +867,23 @@ BOOST_AUTO_TEST_CASE(waste_test) const CAmount new_target{in_amt - fee * 2 - fee_diff * 2}; add_coin(1 * COIN, 1, selection, fee, fee + fee_diff); add_coin(2 * COIN, 2, selection, fee, fee + fee_diff); - BOOST_CHECK_EQUAL(0, GetSelectionWaste(selection, /* change cost */ 0, new_target)); + BOOST_CHECK_EQUAL(0, GetSelectionWaste(selection, /*change_cost=*/ 0, new_target)); + selection.clear(); + + // Negative waste when the long term fee is greater than the current fee and the selected value == target + const CAmount exact_target1{3 * COIN - 2 * fee}; + const CAmount target_waste1{-2 * fee_diff}; // = (2 * fee) - (2 * (fee + fee_diff)) + add_coin(1 * COIN, 1, selection, fee, fee + fee_diff); + add_coin(2 * COIN, 2, selection, fee, fee + fee_diff); + BOOST_CHECK_EQUAL(target_waste1, GetSelectionWaste(selection, /*change_cost=*/ 0, exact_target1)); + selection.clear(); + + // Negative waste when the long term fee is greater than the current fee and change_cost < - (inputs * (fee - long_term_fee)) + const CAmount large_fee_diff{90}; + const CAmount target_waste2{-2 * large_fee_diff + change_cost}; // = (2 * fee) - (2 * (fee + large_fee_diff)) + change_cost + add_coin(1 * COIN, 1, selection, fee, fee + large_fee_diff); + add_coin(2 * COIN, 2, selection, fee, fee + large_fee_diff); + BOOST_CHECK_EQUAL(target_waste2, GetSelectionWaste(selection, change_cost, target)); } BOOST_AUTO_TEST_CASE(effective_value_test) |