Files
lspd/lsps2/fee_test.go
2023-11-06 14:12:37 +01:00

42 lines
1.3 KiB
Go

package lsps2
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
func Test_FeeVariant(t *testing.T) {
zero := uint64(0)
tests := []struct {
paymentSizeMsat uint64
proportional uint32
minFeeMsat uint64
err error
expected uint64
}{
{proportional: 0, paymentSizeMsat: 0, minFeeMsat: 0, expected: 0},
{proportional: 0, paymentSizeMsat: 0, minFeeMsat: 1, expected: 1},
{proportional: 1, paymentSizeMsat: 1, minFeeMsat: 0, expected: 1},
{proportional: 1000, paymentSizeMsat: 10_000_000, minFeeMsat: 9999, expected: 10000},
{proportional: 1000, paymentSizeMsat: 10_000_000, minFeeMsat: 10000, expected: 10000},
{proportional: 1000, paymentSizeMsat: 10_000_000, minFeeMsat: 10001, expected: 10001},
{proportional: 1, paymentSizeMsat: zero - 999_999, minFeeMsat: 0, err: ErrOverflow},
{proportional: 1, paymentSizeMsat: zero - 1_000_000, minFeeMsat: 0, expected: 18446744073709},
{proportional: 2, paymentSizeMsat: zero - 1_000_000, minFeeMsat: 0, err: ErrOverflow},
}
for _, tst := range tests {
t.Run(
fmt.Sprintf("ps%d_prop%d_min%d", tst.paymentSizeMsat, tst.proportional, tst.minFeeMsat),
func(t *testing.T) {
res, err := computeOpeningFee(tst.paymentSizeMsat, tst.proportional, tst.minFeeMsat)
assert.Equal(t, tst.expected, res)
assert.Equal(t, tst.err, err)
},
)
}
}