code: def test_transform(self):
      self._test_recog()
      self._test_bboxes()
      self._test_polygons()
  
imports: import copy
  import unittest
  import unittest.mock
  import numpy
  from mmocr.datasets.transforms import FixInvalidPolygon, RandomCrop, RandomRotate, RemoveIgnored, Resize
  from mmocr.utils import poly2shapely
label_desc: Use image node_id 3 for calling the TestRandomRotate obj's underlying member method code with example usage: obj.test_transform() without return types