code: def test_simple_objects(self):
      for obj in [
          "hello",
          b"hello",
          np.array([0, 1]),
          np.array([0.0, 1.0]),
          np.float32(1.0),
          ["hello", 0, "world", 1.0, True],
          {"1": "hello", "2": 0, "3": True},
          {"1": "hello", "2": [True, False]},
          slice(None, 20, 1),
          slice(None, np.array([0, 1]), 1),
      ]:
          serialized, _, reserialized = self.roundtrip(obj)
          self.assertEqual(serialized, reserialized)
  
imports: import json
  import numpy
  import pytest
  import keras
  from keras import ops
  from keras import testing
  from keras.saving import serialization_lib
label_desc: Use image node_id 2 for calling the SerializationLibTest obj's underlying member method code with example usage: obj.test_simple_objects() without return types