code: def testCreateAgentDimChecks(self):
      action_spec = tensor_spec.BoundedTensorSpec(
          [1, 2], tf.int32, 0, 1
      )
  
      with self.assertRaisesRegex(ValueError, "Only scalar actions"):
          categorical_dqn_agent.CategoricalDqnAgent(
              self._time_step_spec,
              action_spec,
              self._dummy_categorical_net,
              self._optimizer,
          )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import tensorflow
  from tf_agents.agents.categorical_dqn import categorical_dqn_agent
  from tf_agents.networks import categorical_q_network
  from tf_agents.networks import network
  from tf_agents.networks import q_rnn_network
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import policy_step
  from tf_agents.trajectories import test_utils
  from tf_agents.trajectories import time_step
  from tf_agents.trajectories import trajectory
  from tf_agents.utils import common
label_desc: Use image node_id 3 for calling the CategoricalDqnAgentTest obj's underlying member method code with example usage: obj.testCreateAgentDimChecks() without return types