code: def test_transform_operator(self):
      trans = load_local_operator(
          "pytorch_transform_operator", PYTORCH_TRANSFORM_OPERATOR_PATH
      )
      op = trans.PytorchTransformOperator(256)
      outputs = op(self.img)
      c = self.img1.numpy() == outputs.img_transformed.numpy()
      self.assertEqual(c.all(), True)
  
file_path: towhee/tests/unittests/operators/test_pytorch_transform_operator.py
imports: import unittest
  from torchvision import transforms
  import os
  from towhee.utils.pil_utils import PILImage
  from tests.unittests.mock_operators import PYTORCH_TRANSFORM_OPERATOR_PATH, load_local_operator
  from tests.unittests import VIT_DIR
label_desc: Use image node_id 1 for calling the PytorchTransformTest obj's underlying member method code with example usage: obj.test_transform_operator() without return types