neoneo-go/pkg/encoding/fixedn/decimal_test.go

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2020-11-30 09:06:36 +00:00
package fixedn
import (
"math/big"
"testing"
"github.com/stretchr/testify/require"
)
func TestDecimalFromStringGood(t *testing.T) {
var testCases = []struct {
bi *big.Int
prec int
s string
}{
{big.NewInt(123), 2, "1.23"},
{big.NewInt(12300), 2, "123"},
{big.NewInt(1234500000), 8, "12.345"},
{big.NewInt(-12345), 3, "-12.345"},
{big.NewInt(35), 8, "0.00000035"},
{big.NewInt(1230), 5, "0.0123"},
{big.NewInt(123456789), 20, "0.00000000000123456789"},
}
for _, tc := range testCases {
t.Run(tc.s, func(t *testing.T) {
s := ToString(tc.bi, tc.prec)
require.Equal(t, tc.s, s)
bi, err := FromString(s, tc.prec)
require.NoError(t, err)
require.Equal(t, tc.bi, bi)
})
}
}
func TestDecimalFromStringBad(t *testing.T) {
var errCases = []struct {
s string
prec int
}{
{"12A", 1},
{"12.345", 2},
{"12.3A", 2},
}
for _, tc := range errCases {
t.Run(tc.s, func(t *testing.T) {
_, err := FromString(tc.s, tc.prec)
require.Error(t, err)
})
}
}