code: def test_basic(self):
      a = np.array([[1, 2], [3, 4]])
      assert_equal(
          list(ndenumerate(a)),
          [((0, 0), 1), ((0, 1), 2), ((1, 0), 3), ((1, 1), 4)],
      )
  
imports: import pytest
  import numpy
  from numpy.testing import assert_, assert_equal, assert_array_equal, assert_almost_equal, assert_array_almost_equal, assert_raises, assert_raises_regex
  from numpy.lib._index_tricks_impl import mgrid, ogrid, ndenumerate, fill_diagonal, diag_indices, diag_indices_from, index_exp, ndindex, c_, r_, s_, ix_
label_desc: Use image node_id 1 for calling the TestNdenumerate obj's underlying member method code with example usage: obj.test_basic() without return types