code: def setUp(self):
      self.bs, self.in_size, self.out_size = 10, 20, 30
      self.x = numpy.random.normal(size=(self.bs, self.in_size)).astype(
          numpy.float32
      )
      self.layer = L.Linear(self.out_size)  # Lazy initialization
      in_size = None if self.lazy_init else self.in_size
      self.layer = L.Linear(in_size, self.out_size)
      self.hook = WeightStandardization()
  
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 1 for calling the TestLinear obj's underlying member method code with example usage: obj.setUp() without return types