code: def test_online_products_dataset(self):
      assert_is_label_dataset(self.dataset, 22634, n_example=10)
  
      for _ in range(10):
          i = np.random.randint(0, len(self.dataset))
          _, _, super_label = self.dataset[i]
  
          assert isinstance(
              super_label, np.int32
          ), "label must be a numpy.int32."
          assert super_label.ndim == 0, "The ndim of label must be 0"
          assert super_label >= 0 and super_label < len(
              online_products_super_label_names
          ), "The value of label must be in [0, n_class - 1]."
  
file_path: chainercv/tests/datasets_tests/online_products_tests/test_online_products_dataset.py
imports: import unittest
  import numpy
  from chainer import testing
  from chainer.testing import attr
  from chainercv.datasets import online_products_super_label_names
  from chainercv.datasets import OnlineProductsDataset
  from chainercv.utils import assert_is_label_dataset
label_desc: Use image node_id 2 for calling the TestOnlineProductsDataset obj's underlying member method code with example usage: obj.test_online_products_dataset() without return types