code: def setUp(self):
      test_dir = os.path.dirname(__file__)
      project_test_dir = os.path.abspath(
          os.path.join(
              os.path.join(os.path.join(test_dir, ".."), ".."), ".."
          )
      )
      os.environ["PYTHONPATH"] = project_test_dir
  
imports: import os
  import pytest
  import torch
  from unittest import TestCase
  from bigdl.nano.pytorch import Trainer
  from bigdl.nano.pytorch import TorchNano
  from bigdl.nano.utils.pytorch import TORCH_VERSION_LESS_1_12, TORCH_VERSION_LESS_2_0
  from torchvision.models.resnet import ResNet, BasicBlock
  from torchmetrics.functional import accuracy
  import pytorch_lightning
  import torch.nn.functional
  from test.pytorch.utils._train_torch_lightning import create_data_loader, data_transform
  from test.pytorch.utils._train_torch_lightning import create_test_data_loader
label_desc: Use image node_id 1 for calling the ChannelsLast obj's underlying member method code with example usage: obj.setUp() without return types