code: def rand_vector(shape):
      # return cuda.cupy.random.randint(-2, 2, shape).astype('f')
      return cuda.cupy.random.uniform(-1, 1, shape).astype("f")
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  import chainer.functions
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import backend
  from chainer.testing import condition
label_desc: Use image node_id 1 for calling a global function with example usage: rand_vector(shape) and returns: cuda