code: def setUp(self):
      self.dtype = numpy.float32
      self.x = numpy.random.uniform(-100, 100, (1,)).astype(self.dtype)
  
imports: import unittest
  import numpy
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
  import chainerx
label_desc: Use image node_id 1 for calling the TestNoCast obj's underlying member method code with example usage: obj.setUp() without return types