code: def generate_inputs(self):
      shape = self.shape
      dtype = self.dtype
      y = numpy.random.uniform(-1, 1, shape).astype(dtype)
      xs = tuple([y[s] for s in self.slices])
      return xs
  
file_path: chainer/tests/chainer_tests/functions_tests/array_tests/test_concat.py
imports: import unittest
  import numpy
  from chainer import functions
  from chainer import testing
  from chainer.testing import backend
label_desc: Use image node_id 1 for calling the TestConcat obj's underlying member method code with example usage: obj.generate_inputs() and returns: xs