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fix adjustment < min amount creating offers

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This commit is contained in:
woodser 2023-10-30 09:17:51 -04:00
parent 4f5f82bf0f
commit f261a38cce
3 changed files with 10 additions and 11 deletions
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14
core/src/main/java/haveno/core/util/coin/CoinUtil.java
View File

@ -47,7 +47,7 @@ public class CoinUtil {
public static double getFeePerVbyte(Coin miningFee, int txVsize) {
double value = miningFee != null ? miningFee.value : 0;
return MathUtils.roundDouble((value / (double) txVsize), 2);
return MathUtils.roundDouble((value / txVsize), 2);
}
/**
@ -127,8 +127,8 @@ public class CoinUtil {
@VisibleForTesting
static BigInteger getAdjustedAmount(BigInteger amount, Price price, long maxTradeLimit, int factor) {
checkArgument(
amount.longValueExact() >= HavenoUtils.xmrToAtomicUnits(0.0001).longValueExact(),
"amount needs to be above minimum of 0.0001 xmr" // TODO: update amount for XMR
amount.longValueExact() >= Restrictions.getMinTradeAmount().longValueExact(),
"amount needs to be above minimum of " + HavenoUtils.atomicUnitsToXmr(Restrictions.getMinTradeAmount()) + " xmr"
);
checkArgument(
factor > 0,
@ -143,10 +143,9 @@ public class CoinUtil {
BigInteger smallestUnitForAmount = price.getAmountByVolume(smallestUnitForVolume);
long minTradeAmount = Restrictions.getMinTradeAmount().longValueExact();
// We use 10 000 satoshi as min allowed amount
checkArgument(
minTradeAmount >= HavenoUtils.xmrToAtomicUnits(0.0001).longValueExact(),
"MinTradeAmount must be at least 0.0001 xmr" // TODO: update amount for XMR
minTradeAmount >= Restrictions.getMinTradeAmount().longValueExact(),
"MinTradeAmount must be at least " + HavenoUtils.atomicUnitsToXmr(Restrictions.getMinTradeAmount()) + " xmr"
);
smallestUnitForAmount = BigInteger.valueOf(Math.max(minTradeAmount, smallestUnitForAmount.longValueExact()));
// We don't allow smaller amount values than smallestUnitForAmount
@ -164,8 +163,7 @@ public class CoinUtil {
BigInteger amountByVolume = price.getAmountByVolume(volume);
// For the amount we allow only 4 decimal places
// TODO: remove rounding for XMR?
long adjustedAmount = HavenoUtils.centinerosToAtomicUnits(Math.round((double) HavenoUtils.atomicUnitsToCentineros(amountByVolume) / 10000d) * 10000).longValueExact();
long adjustedAmount = HavenoUtils.centinerosToAtomicUnits(Math.round(HavenoUtils.atomicUnitsToCentineros(amountByVolume) / 10000d) * 10000).longValueExact();
// If we are above our trade limit we reduce the amount by the smallestUnitForAmount
while (adjustedAmount > maxTradeLimit) {

6
core/src/test/java/haveno/core/util/coin/CoinUtilTest.java
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@ -59,7 +59,7 @@ public class CoinUtilTest {
@Test
public void testGetAdjustedAmount() {
BigInteger result = CoinUtil.getAdjustedAmount(
HavenoUtils.xmrToAtomicUnits(0.001),
HavenoUtils.xmrToAtomicUnits(0.1),
Price.valueOf("USD", 1000_0000),
HavenoUtils.xmrToAtomicUnits(0.2).longValueExact(),
1);
@ -78,7 +78,7 @@ public class CoinUtilTest {
fail("Expected IllegalArgumentException to be thrown when amount is too low.");
} catch (IllegalArgumentException iae) {
assertEquals(
"amount needs to be above minimum of 0.0001 xmr",
"amount needs to be above minimum of 0.1 xmr",
iae.getMessage(),
"Unexpected exception message."
);
@ -112,7 +112,7 @@ public class CoinUtilTest {
// 0.05 USD worth, which is below the factor of 1 USD, but does respect the maxTradeLimit.
// Basically the given constraints (maxTradeLimit vs factor) are impossible to both fulfill..
result = CoinUtil.getAdjustedAmount(
HavenoUtils.xmrToAtomicUnits(0.001),
HavenoUtils.xmrToAtomicUnits(0.1),
Price.valueOf("USD", 1000_0000),
HavenoUtils.xmrToAtomicUnits(0.00005).longValueExact(),
1);

1
desktop/src/main/java/haveno/desktop/main/offer/MutableOfferDataModel.java
View File

@ -524,6 +524,7 @@ public abstract class MutableOfferDataModel extends OfferDataModel {
// if the volume != amount * price, we need to adjust the amount
if (amount.get() == null || !volumeBefore.equals(price.get().getVolumeByAmount(amount.get()))) {
BigInteger value = price.get().getAmountByVolume(volumeBefore);
value = value.max(Restrictions.getMinTradeAmount()); // adjust if below minimum
value = CoinUtil.getRoundedAmount(value, price.get(), getMaxTradeLimit(), tradeCurrencyCode.get(), paymentAccount.getPaymentMethod().getId());
amount.set(value);
}