Add golden test.

Checked with previous version, it is working fine.

Signed-off-by: Antonio Navarro Perez <[email protected]>

tm2/pkg/crypto/ed25519/ed25519_test.go

@@ -1,12 +1,14 @@
 package ed25519_test
 
 import (
+	"encoding/hex"
 	"testing"
 
-	"github.com/gnolang/gno/tm2/pkg/crypto"
-	"github.com/gnolang/gno/tm2/pkg/crypto/ed25519"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/gnolang/gno/tm2/pkg/crypto"
+	"github.com/gnolang/gno/tm2/pkg/crypto/ed25519"
 )
 
 func TestSignAndValidateEd25519(t *testing.T) {
@@ -28,3 +30,17 @@ func TestSignAndValidateEd25519(t *testing.T) {
 
 	assert.False(t, pubKey.VerifyBytes(msg, sig))
 }
+
+const privKeySecretGolden = "secret_golden"
+const msgGolden = "msg_golden"
+const signedGolden = "f9d4e6a665dfb6cd7e2fedf0d46a1725472e640a5e93d654ce4caa986e5defd23c8b3af76aa6e39c24c582f0ebee860f66254b29cf6d034ce461ae2773133703"
+
+func TestSignAndVerifyGolden(t *testing.T) {
+	privKey := ed25519.GenPrivKeyFromSecret([]byte(privKeySecretGolden))
+	// pubKey := privKey.PubKey()
+	out, err := privKey.Sign([]byte(msgGolden))
+	require.NoError(t, err)
+
+	hexOut := hex.EncodeToString(out)
+	require.Equal(t, signedGolden, hexOut)
+}