docstr: Test serializing simple ViewRequirement into JSON serializable dict
docstr_tok: ["Test","serializing","simple","ViewRequirement","into","JSON","serializable","dict"]
code: def test_serialize_view_requirement(self):
      """Test serializing simple ViewRequirement into JSON serializable dict"""
      vr = ViewRequirement(
          "obs",
          shift=[-1],
          used_for_training=False,
          used_for_compute_actions=True,
          batch_repeat_value=1,
      )
      d = vr.to_dict()
      self.assertEqual(d["data_col"], "obs")
      self.assertEqual(d["space"]["space"], "box")
  
      # Make sure serialized dict is JSON serializable.
      s = json.dumps(d)
      d2 = json.loads(s)
  
      self.assertEqual(d2["used_for_training"], False)
      self.assertEqual(d2["used_for_compute_actions"], True)
  
      vr2 = ViewRequirement.from_dict(d2)
      self.assertEqual(vr2.data_col, "obs")
      self.assertTrue(isinstance(vr2.space, gym.spaces.Box))
  
imports: import gymnasium
  import json
  import unittest
  from ray.rllib.policy.view_requirement import ViewRequirement
label_desc: Use image node_id 1 for calling the TestViewRequirement obj's underlying member method code with example usage: obj.test_serialize_view_requirement() without return types