code: def test_0d_array(self, xp):
      def sum_to_0d(x):
          """Sum x, returning a 0d array of the same class"""
          assert x.ndim == 1
          return xp.squeeze(xp.sum(x, keepdims=True))
  
      a = xp.ones((6, 3))
      return xp.apply_along_axis(sum_to_0d, self.axis, a)
  
file_path: cupy/tests/cupy_tests/lib_tests/test_shape_base.py
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 3 for calling the TestApplyAlongAxis obj's underlying member method code with example usage: obj.test_0d_array(xp) and returns: xp, xp