code: def setUp(self):
      self.x = numpy.random.uniform(-1, 1, self.shape).astype(
          self.dtype
      )
      if self.same_value:
          self.x[:] = numpy.random.uniform(-1, 1, 1).astype(self.dtype)
  
imports: import unittest
  from chainer import cuda
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import condition
  import numpy
  from chainerrl.functions.mellowmax import maximum_entropy_mellowmax
  from chainerrl.functions.mellowmax import mellowmax
label_desc: Use image node_id 1 for calling the TestMellowmax obj's underlying member method code with example usage: obj.setUp() without return types