code: def test_raises(self):
      with pytest.raises(NotImplementedError):
          with WeightStandardization():
              self.layer(self.x)
  
imports: import unittest
  import numpy
  import pytest
  import chainer
  from chainer.backends import cuda
  from chainer.link_hooks.weight_standardization import WeightStandardization
  import chainer.links
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 3 for calling the TestExceptions obj's underlying member method code with example usage: obj.test_raises() without return types