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|
package uint256
import (
"fmt"
"math/big"
"testing"
)
func testSetFromDecForFuzzing(tc string) error {
a := new(Int).SetAllOne()
err := a.SetFromDecimal(tc)
// If input is negative, we should eror
if len(tc) > 0 && tc[0] == '-' {
if err == nil {
return fmt.Errorf("want error on negative input")
}
return nil
}
// Need to compare with big.Int
bigA, ok := big.NewInt(0).SetString(tc, 10)
if !ok {
if err == nil {
return fmt.Errorf("want error")
}
return nil // both agree that input is bad
}
if bigA.BitLen() > 256 {
if err == nil {
return fmt.Errorf("want error (bitlen > 256)")
}
return nil
}
want := bigA.String()
have := a.Dec()
if want != have {
return fmt.Errorf("want %v, have %v", want, have)
}
if _, err := a.Value(); err != nil {
return fmt.Errorf("fail to Value() %s, got err %s", tc, err)
}
return nil
}
func FuzzSetString(f *testing.F) {
f.Fuzz(func(t *testing.T, data []byte) {
if len(data) > 512 {
return
}
if err := testSetFromDecForFuzzing(string(data)); err != nil {
t.Fatal(err)
}
})
}
|
