53 lines
1 KiB
Go
53 lines
1 KiB
Go
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
|
|
}{
|
|
{"", 0},
|
|
{"", 1},
|
|
{"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)
|
|
})
|
|
}
|
|
}
|