code: def setUp(self):
      self.x = numpy.random.uniform(size=self.in_shape).astype(
          numpy.float32
      )
      output_shape_4d = self.in_shape[:2] + self.output_shape
      self.gy = numpy.random.uniform(size=output_shape_4d).astype(
          numpy.float32
      )
      self.ggx = numpy.random.uniform(size=self.in_shape).astype(
          numpy.float32
      )
  
imports: import unittest
  import numpy
  from chainer.backends import cuda
  from chainer import functions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 1 for calling the TestResizeImagesBackward obj's underlying member method code with example usage: obj.setUp() without return types