file_path: trl/tests/test_reward_trainer.py
imports: import tempfile
  import unittest
  import torch
  from datasets import Dataset
  from transformers import AutoModelForSequenceClassification, AutoTokenizer, EvalPrediction
  from trl import RewardConfig, RewardTrainer
  from trl.trainer import compute_accuracy
  from .testing_utils import require_peft
label_desc: Use image node_id 3 for calling the RewardTrainerTester obj's underlying member method code with example usage: obj.test_reward_trainer() without return types