diff --git a/storage/persisted/codec.gen_test.go b/storage/persisted/codec.gen_test.go
new file mode 100644
index 0000000..da0e03c
--- /dev/null
+++ b/storage/persisted/codec.gen_test.go
@@ -0,0 +1,21 @@
+package persisted
+
+import (
+	"testing"
+
+	"gitee.com/timedb/wheatCache/pkg/proto"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_codec_Encode(t *testing.T) {
+	c := codec{}
+	req := &proto.LIndexRequest{
+		Key:   proto.NewBaseKey("123"),
+		Index: 11,
+	}
+	b, err := c.Encode("LIndex", req)
+	require.NoError(t, err)
+	res, err := c.Decode(b)
+	require.NoError(t, err)
+	require.Equal(t, req.Index, res.(*proto.LIndexRequest).Index)
+}