code: def setUp(self):
      def _iterator():
          i = 0
          while True:
              yield i, i + 1, i * i
              i += 1
  
      self.iterable = _iterator()
  
imports: import random
  import unittest
  from chainer import testing
  from chainercv.utils import unzip
label_desc: Use image node_id 1 for calling the TestUnzipWithInfiniteIterator obj's underlying member method code with example usage: obj.setUp() without return types