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util: implement FixedN from string

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When working with NEP5 contracts we frequently need
to parse fixed-point decimals with arbitrary precision.
This commit is contained in:
Evgenii Stratonikov 2020-03-05 20:05:52 +03:00
parent cdeba6d417
commit d447064515
2 changed files with 30 additions and 4 deletions
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14
pkg/util/fixed8_test.go
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@ -85,6 +85,20 @@ func TestFixed8FromString(t *testing.T) {
assert.Error(t, err)
}
func TestFixedNFromString(t *testing.T) {
val := "123.456"
num, err := FixedNFromString(val, 3)
require.NoError(t, err)
require.EqualValues(t, 123456, num)
num, err = FixedNFromString(val, 4)
require.NoError(t, err)
require.EqualValues(t, 1234560, num)
_, err = FixedNFromString(val, 2)
require.Error(t, err)
}
func TestSatoshi(t *testing.T) {
satoshif8 := Satoshi()
assert.Equal(t, "0.00000001", satoshif8.String())