90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package precision_test
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import (
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"math/big"
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"testing"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/precision"
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"github.com/stretchr/testify/require"
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)
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func TestFixed8Converter_ToBalancePrecision(t *testing.T) {
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var n int64 = 100*100_000_000 + 12_345_678
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t.Run("same precision", func(t *testing.T) {
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cnv := precision.NewConverter(8)
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res := cnv.ToBalancePrecision(n)
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require.Equal(t, n, res)
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})
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t.Run("bigger target", func(t *testing.T) {
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cnv := precision.NewConverter(10)
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exp := n * 100
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res := cnv.ToBalancePrecision(n)
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require.Equal(t, exp, res)
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})
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t.Run("less target", func(t *testing.T) {
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cnv := precision.NewConverter(6)
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exp := n / 100
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res := cnv.ToBalancePrecision(n)
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require.Equal(t, exp, res)
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cnv = precision.NewConverter(0)
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exp = n / 100_000_000
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res = cnv.ToBalancePrecision(n)
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require.Equal(t, exp, res)
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})
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}
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func TestFixed8Converter_ToFixed8(t *testing.T) {
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var n int64 = 100*10_000_000 + 12_345_678
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t.Run("same precision", func(t *testing.T) {
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cnv := precision.NewConverter(8)
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res := cnv.ToFixed8(n)
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require.Equal(t, n, res)
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})
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t.Run("bigger target", func(t *testing.T) {
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cnv := precision.NewConverter(10)
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exp := n / 100
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res := cnv.ToFixed8(n)
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require.Equal(t, exp, res)
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})
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t.Run("less target", func(t *testing.T) {
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cnv := precision.NewConverter(6)
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exp := n * 100
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res := cnv.ToFixed8(n)
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require.Equal(t, exp, res)
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n = 1
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cnv = precision.NewConverter(0)
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exp = n * 100_000_000
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res = cnv.ToFixed8(n)
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require.Equal(t, exp, res)
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})
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}
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func TestConvert(t *testing.T) {
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n := big.NewInt(100*10_000_000 + 12_345_678)
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t.Run("same precision", func(t *testing.T) {
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require.Equal(t, n, precision.Convert(8, 8, n))
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require.Equal(t, n, precision.Convert(0, 0, n))
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})
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t.Run("bigger target", func(t *testing.T) {
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exp := new(big.Int).Mul(n, big.NewInt(100))
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require.Equal(t, exp, precision.Convert(8, 10, n))
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require.Equal(t, exp, precision.Convert(0, 2, n))
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})
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t.Run("less target", func(t *testing.T) {
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exp := new(big.Int).Div(n, big.NewInt(100))
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require.Equal(t, exp, precision.Convert(10, 8, n))
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require.Equal(t, exp, precision.Convert(2, 0, n))
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})
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}
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