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crate::ix!();
//-------------------------------------------[.cpp/bitcoin/src/wallet/test/spend_tests.cpp]
#[cfg(test)]
#[fixture(WalletTestingSetup)]
pub mod spend_tests {
#[test] fn subtract_fee_test_chain_100setup() {
todo!();
/*
CreateAndProcessBlock({}, GetScriptForRawPubKey(coinbaseKey.GetPubKey()));
auto wallet = CreateSyncedWallet(*m_node.chain, m_node.chainman->ActiveChain(), coinbaseKey);
// Check that a subtract-from-recipient transaction slightly less than the
// coinbase input amount does not create a change output (because it would
// be uneconomical to add and spend the output), and make sure it pays the
// leftover input amount which would have been change to the recipient
// instead of the miner.
auto check_tx = [&wallet](CAmount leftover_input_amount) {
CRecipient recipient{GetScriptForRawPubKey({}), 50 * COIN - leftover_input_amount, true /* subtract fee */};
CTransactionRef tx;
CAmount fee;
int change_pos = -1;
bilingual_str error;
CCoinControl coin_control;
coin_control.m_feerate.emplace(10000);
coin_control.fOverrideFeeRate = true;
// We need to use a change type with high cost of change so that the leftover amount will be dropped to fee instead of added as a change output
coin_control.m_change_type = OutputType::LEGACY;
FeeCalculation fee_calc;
BOOST_CHECK(CreateTransaction(*wallet, {recipient}, tx, fee, change_pos, error, coin_control, fee_calc));
BOOST_CHECK_EQUAL(tx->vout.size(), 1);
BOOST_CHECK_EQUAL(tx->vout[0].nValue, recipient.nAmount + leftover_input_amount - fee);
BOOST_CHECK_GT(fee, 0);
return fee;
};
// Send full input amount to recipient, check that only nonzero fee is
// subtracted (to_reduce == fee).
const CAmount fee{check_tx(0)};
// Send slightly less than full input amount to recipient, check leftover
// input amount is paid to recipient not the miner (to_reduce == fee - 123)
BOOST_CHECK_EQUAL(fee, check_tx(123));
// Send full input minus fee amount to recipient, check leftover input
// amount is paid to recipient not the miner (to_reduce == 0)
BOOST_CHECK_EQUAL(fee, check_tx(fee));
// Send full input minus more than the fee amount to recipient, check
// leftover input amount is paid to recipient not the miner (to_reduce ==
// -123). This overpays the recipient instead of overpaying the miner more
// than double the necessary fee.
BOOST_CHECK_EQUAL(fee, check_tx(fee + 123));
*/
}
}