code: def test_dummy_ndarray_padding(
      xp, shape, dtype, padding, expected_strides
  ):
      if padding is None:
          a = array_utils.create_dummy_ndarray(xp, shape, dtype)
      else:
          a = array_utils.create_dummy_ndarray(
              xp, shape, dtype, padding=padding
          )
      assert isinstance(a, xp.ndarray)
      assert a.shape == shape
      assert a.dtype == xp.dtype(dtype)
      assert a.strides == expected_strides
  
file_path: chainer/tests/chainerx_tests/test_array_utils.py
imports: import numpy
  import pytest
  import chainerx
  from chainerx_tests import array_utils
label_desc: Use image node_id 4 for calling a global function with example usage: test_dummy_ndarray_padding(xp, shape, dtype, padding, expected_strides) without return types