code: def test_get_svhn_cached(self):
      self.check_retrieval_twice(["train.npz", "test.npz"], get_svhn)
  
file_path: chainer/tests/chainer_tests/datasets_tests/test_svhn.py
imports: import os
  import unittest
  import mock
  import numpy
  from chainer.dataset import download
  from chainer.datasets import get_svhn
  from chainer.datasets import tuple_dataset
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 5 for calling the TestSvhn obj's underlying member method code with example usage: obj.test_get_svhn_cached() without return types