code: def setUp(self):
      e1 = _uniform(3, 2)
      e2 = _uniform(3, 4)
      W = _uniform(2, 4, 5)
      V1 = _uniform(2, 5)
  
      self.e1 = chainer.Variable(e1)
      self.e2 = chainer.Variable(e2)
      self.W = chainer.Variable(W)
      self.V1 = chainer.Variable(V1)
  
imports: import unittest
  import numpy
  import chainer
  from chainer import backend
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 1 for calling the TestBilinearFunctionInvalidArgument obj's underlying member method code with example usage: obj.setUp() without return types