code: def test_assert_is_bbox(self):
      if self.valid:
          assert_is_bbox(self.bbox, self.size)
      else:
          with self.assertRaises(AssertionError):
              assert_is_bbox(self.bbox, self.size)
  
file_path: chainercv/tests/utils_tests/testing_tests/assertions_tests/test_assert_is_bbox.py
imports: import numpy
  import unittest
  from chainercv.utils import assert_is_bbox
  from chainercv.utils import testing
label_desc: Use image node_id 2 for calling the TestAssertIsBbox obj's underlying member method code with example usage: obj.test_assert_is_bbox() without return types