class_docstr: Basic tests to count the number of examples/episodes and to check a few utterances.
code: def test_counts(self):
      with testing_utils.tempdir() as tmpdir:
          data_path = tmpdir
          cases = [
              ("LabeledBlendedSkillTalk", "train", 4819, 27018),
              ("LabeledBlendedSkillTalk", "valid", 1009, 5651),
              ("LabeledBlendedSkillTalk", "test", 980, 5482),
              (
                  "LabeledConvAI2PersonaTopicifier",
                  "train",
                  17878,
                  131438,
              ),
              ("LabeledConvAI2PersonaTopicifier", "valid", 1000, 7801),
              ("LabeledConvAI2PersonaTopicifier", "test", 1000, 7801),
              ("LabeledEDPersonaTopicifier", "train", 39057, 64636),
              ("LabeledEDPersonaTopicifier", "valid", 2769, 5738),
              ("LabeledEDPersonaTopicifier", "test", 2547, 5259),
              ("LabeledWoWPersonaTopicifier", "train", 18430, 74092),
              ("LabeledWoWPersonaTopicifier", "valid", 981, 3939),
              ("LabeledWoWPersonaTopicifier", "test", 965, 3865),
          ]
          for (
              teacher_name,
              datatype,
              num_episodes,
              num_examples,
          ) in cases:
              all_kwargs = {
                  "task": f"style_gen:{teacher_name}",
                  "datatype": datatype,
                  "datapath": data_path,
              }
              parser = setup_args()
              parser.set_defaults(**all_kwargs)
              opt = parser.parse_args([])
              agent = RepeatLabelAgent(opt)
              teacher = create_task(opt, agent).get_task_agent()
              self.assertEqual(teacher.num_episodes(), num_episodes)
              self.assertEqual(teacher.num_examples(), num_examples)
  
file_path: ParlAI/tests/tasks/test_style_gen_teachers.py
imports: import unittest
  import parlai.utils.testing
  from parlai.agents.repeat_label.repeat_label import RepeatLabelAgent
  from parlai.core.worlds import create_task
  from parlai.scripts.display_data import setup_args
label_desc: Use image node_id 1 for calling the TestStyleGenTeachers obj's underlying member method code with example usage: obj.test_counts() without return types