code: def testPixelObservationSpec(self):
      render_kwargs = dict(width=100, height=50)
      env = suite_dm_control.load_pixels(
          "ball_in_cup", "catch", render_kwargs=render_kwargs
      )
      obs_spec = env.observation_spec()
  
      self.assertEqual(np.uint8, obs_spec["pixels"].dtype)
      self.assertEqual((50, 100, 3), obs_spec["pixels"].shape)
  
file_path: agents/tf_agents/environments/suite_dm_control_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  from tf_agents.environments import py_environment
  from tf_agents.environments import suite_dm_control
  from tf_agents.environments import utils
  from tf_agents.utils import test_utils
label_desc: Use image node_id 5 for calling the SuiteDMControlTest obj's underlying member method code with example usage: obj.testPixelObservationSpec() without return types