code: def _setup_tensor(self, _min, _max, shape, dtype):
      return numpy.random.uniform(_min, _max, shape).astype(dtype)
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer.functions.math import einsum
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
  from chainer import utils
label_desc: Use image node_id 2 for calling the TestDiagEinSum obj's underlying member method code with example usage: obj._setup_tensor(_min, _max, shape, dtype) and returns: numpy