[#1255] node/session: Add encryption tests

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/services/session/storage/persistent/encryption_test.go

@@ -0,0 +1,29 @@
+package persistent
+
+import (
+	"bytes"
+	"path/filepath"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/stretchr/testify/require"
+)
+
+func TestTokenStore_Encryption(t *testing.T) {
+	pk, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	ts, err := NewTokenStore(filepath.Join(t.TempDir(), ".storage"), WithEncryptionKey(&pk.PrivateKey))
+	require.NoError(t, err)
+
+	data := []byte("nice encryption, awesome tests")
+
+	encryptedData, err := ts.encrypt(data)
+	require.NoError(t, err)
+	require.False(t, bytes.Equal(data, encryptedData))
+
+	decryptedData, err := ts.decrypt(encryptedData)
+	require.NoError(t, err)
+
+	require.Equal(t, data, decryptedData)
+}