docstr: Test that sequence data env returns correct action/observation space.
docstr_tok: ["Test","that","sequence","data","env","returns","correct","action\/observation","space","."]
code: def test_copy_task_action_observation_space(self):
      """Test that sequence data env returns correct action/observation space."""
      env = data_envs.SequenceDataEnv(data_envs.copy_stream(2, n=1), 16)
      self.assertEqual(env.action_space.n, 16)
      self.assertEqual(env.observation_space.n, 16)
  
file_path: trax/trax/rl/envs/data_envs_test.py
imports: from absl.testing import absltest
  import numpy
  from trax.rl.envs import data_envs
label_desc: Use image node_id 4 for calling the SequenceDataEnvTest obj's underlying member method code with example usage: obj.test_copy_task_action_observation_space() without return types