class_docstr: Tests for rlu_atari dataset.
class_docstr_tok: ["Tests","for","rlu_atari","dataset","."]
code: def setUpClass(cls):
      rlu_atari.RluAtari._INPUT_FILE_PREFIX = cls.dummy_data
      rlu_atari.RluAtari._SHARDS = 1
      super().setUpClass()
  
imports: import tensorflow_datasets.public_api
  from tensorflow_datasets.rl_unplugged.rlu_atari import rlu_atari
label_desc: Use image node_id 1 for calling the RluAtariTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types