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https://github.com/lightninglabs/loop.git
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0ee07198f6
Include https://github.com/lightninglabs/lndclient/pull/280 multi: migrate to btcd v2 modules + add WalletKit.SubmitPackage Migrate Loop imports and update Aperture and Taproot Assets to compatible revisions so this commit remains green on its own.
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
package utils
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import (
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"testing"
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"github.com/btcsuite/btcd/btcutil/v2"
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"github.com/lightningnetwork/lnd/lntypes"
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"github.com/lightningnetwork/lnd/lnwallet/chainfee"
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"github.com/stretchr/testify/require"
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)
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// TestClampSweepFee verifies clamping still respects min relay fee
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// requirements and reports clamping.
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func TestClampSweepFee(t *testing.T) {
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weight := lntypes.WeightUnit(400)
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minRelay := chainfee.SatPerKWeight(253)
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total := btcutil.Amount(100_000)
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// Fee below the clamp threshold and above min relay should pass
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// through.
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fee := chainfee.SatPerKWeight(1_000).FeeForWeight(weight)
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clamped, clampedFlag, err := ClampSweepFee(
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fee, total, MaxFeeToAmountRatio, minRelay, weight,
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)
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require.NoError(t, err)
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require.Equal(t, fee, clamped)
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require.False(t, clampedFlag)
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// A clamped fee that would fall below min relay should error.
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// The fee will be clamped to 20 sats.
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fee = btcutil.Amount(10_000)
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total = btcutil.Amount(100)
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_, clampedFlag, err = ClampSweepFee(
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fee, total, MaxFeeToAmountRatio, minRelay, weight,
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)
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require.True(t, clampedFlag)
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require.Error(t, err)
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// A fee above the clamp threshold should be clamped without error when
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// still above min relay. The fee is 30% of total, will clamp to 20%.
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fee = btcutil.Amount(30_000)
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total = btcutil.Amount(100_000)
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clamped, clampedFlag, err = ClampSweepFee(
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fee, total, MaxFeeToAmountRatio, minRelay, weight,
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)
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require.NoError(t, err)
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require.True(t, clampedFlag)
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expectedClampedFee := btcutil.Amount(
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float64(total) * MaxFeeToAmountRatio,
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)
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require.Equal(t, expectedClampedFee, clamped)
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}
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