code: def _should_fail(self, f):
      try:
          f(self.unit_test)
          self.fail(
              "AssertionError is expected to be raised, but none is raised"
          )
      except AssertionError as e:
          # check if the detail is included in the error object
          self.assertIn("first error message:", str(e))
  
imports: import unittest
  import pytest
  from chainer import testing
  from chainer.testing import condition
label_desc: Use image node_id 1 for calling a global function with example usage: _should_fail(f) without return types