code: def check_flip(self, xp):
      x = xp.arange(4, dtype=self.dtype)
      y = _stride_array(x, (4,), (-1,), 3)  # [3, 2, 1, 0]
      y_expected = x[::-1]
      testing.assert_allclose(y, y_expected)
  
imports: import unittest
  import numpy
  import chainer
  from chainer import cuda
  import chainer.functions
  from chainer.functions.array.as_strided import _stride_array
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestStrideArray obj's underlying member method code with example usage: obj.check_flip(xp) without return types