code: def setUp(self):
      def func(*in_values):
          n_sample = len(in_values[0])
          return [np.random.uniform() for _ in range(n_sample)]
  
      self.func = func
  
      self.dataset = []
      for _ in range(5):
          H, W = np.random.randint(8, 16, size=2)
          self.dataset.append(np.random.randint(0, 256, size=(3, H, W)))
  
file_path: chainercv/tests/utils_tests/iterator_tests/test_progress_hook.py
imports: import numpy
  import unittest
  from chainer.iterators import SerialIterator
  from chainer import testing
  from chainercv.utils import apply_to_iterator
  from chainercv.utils import ProgressHook
label_desc: Use image node_id 1 for calling the TestProgressHook obj's underlying member method code with example usage: obj.setUp() and returns: unknown