diff --git a/storage/dao/stringx_test.go b/storage/dao/stringx_test.go
index dab89b8..7cdc5b3 100644
--- a/storage/dao/stringx_test.go
+++ b/storage/dao/stringx_test.go
@@ -115,6 +115,11 @@ func TestDao_GetRange(t *testing.T) {
 	_, err = dao.GetRange(baseKey, 0, 7)
 	require.Error(t, err)
 
+	_, err = dao.Set(baseKey, "123456")
+	require.NoError(t, err)
+	resp, err = dao.GetRange(baseKey, 0, 3)
+	require.NoError(t, err)
+	require.Equal(t, resp.Result, "123")
 }
 
 func TestDao_GetSet(t *testing.T) {