code: def test_observation_spec(self):
      self.assertEqual(
          self._env.observation_spec(),
          self._mock_env.observation_spec(),
      )
  
file_path: pysc2/pysc2/env/mock_sc2_env_comparison_test.py
imports: from absl.testing import absltest
  from pysc2.env import mock_sc2_env
  from pysc2.env import sc2_env
label_desc: Use image node_id 3 for calling the TestCompareEnvironments obj's underlying member method code with example usage: obj.test_observation_spec() without return types