code: def setUp(self):
      self.link = links.Linear(*self.linear_args)
      self.out_size = self.linear_args[-1]
      temp_x = numpy.random.uniform(
          -1, 1, (self.out_size, self.in_size)
      ).astype(numpy.float32)
      if self.input_variable:
          self.link(chainer.Variable(temp_x))
      else:
          self.link(temp_x)
      W = self.link.W.data
      W[...] = numpy.random.uniform(-1, 1, W.shape)
      b = self.link.b.data
      b[...] = numpy.random.uniform(-1, 1, b.shape)
      self.link.cleargrads()
  
      x_shape = (4,) + self.in_shape
      self.x = numpy.random.uniform(-1, 1, x_shape).astype(
          numpy.float32
      )
      self.gy = numpy.random.uniform(-1, 1, (4, self.out_size)).astype(
          numpy.float32
      )
      self.y = self.x.reshape(4, -1).dot(W.T) + b
  
imports: import os
  import tempfile
  import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import gradient_check
  from chainer import links
  from chainer.serializers import npz
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import condition
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling the TestLinearParameterShapePlaceholder obj's underlying member method code with example usage: obj.setUp() without return types