code: def test_slice_with_repeat_value_1(self):
      obs_space = gym.spaces.Box(-np.ones(4), np.ones(4))
      ctx_len = 5
      view_reqs = {
          SampleBatch.T: ViewRequirement(SampleBatch.T),
          SampleBatch.OBS: ViewRequirement("obs", space=obs_space),
          "prev_obses": ViewRequirement("obs", shift=f"-{ctx_len}:-1"),
      }
      ac = AgentCollector(view_reqs=view_reqs, is_policy_recurrent=True)
  
      obses = self._simulate_env_steps(ac, n_steps=10)
  
      sample_batch = ac.build_for_training(view_reqs)
      # exclude the last one since these are the next_obses
      expected_obses = np.stack(obses[:-1])
  
      check(expected_obses, sample_batch[SampleBatch.OBS])
  
      for t in range(10):
          # no padding
          if t > ctx_len - 1:
              check(
                  sample_batch["prev_obses"][t],
                  expected_obses[t - ctx_len : t],
              )
          else:
              # with padding
              for offset in range(ctx_len):
                  if offset < ctx_len - t:
                      # check the padding
                      check(
                          sample_batch["prev_obses"][t, offset],
                          expected_obses[0],
                      )
                  else:
                      # check the rest of the data
                      check(
                          sample_batch["prev_obses"][t, offset:],
                          expected_obses[t - ctx_len + offset : t],
                      )
                      break
  
imports: import gymnasium
  import numpy
  import unittest
  import ray
  import math
  from ray.rllib.policy.sample_batch import SampleBatch
  from ray.rllib.policy.view_requirement import ViewRequirement
  from ray.rllib.utils.test_utils import check
  from ray.rllib.evaluation.collectors.agent_collector import AgentCollector
label_desc: Use image node_id 6 for calling the TestAgentCollector obj's underlying member method code with example usage: obj.test_slice_with_repeat_value_1() without return types