code: def test_combined_views_mapping(self):
      # gh-10792
      a = np.arange(9).reshape(1, 1, 3, 1, 3)
      b = np.einsum("bbcdc->d", a)
      assert_equal(b, [12])
  
imports: import itertools
  import sys
  import platform
  import pytest
  import numpy
  from numpy.testing import assert_, assert_equal, assert_array_equal, assert_almost_equal, assert_raises, suppress_warnings, assert_raises_regex, assert_allclose
label_desc: Use image node_id 42 for calling the TestEinsum obj's underlying member method code with example usage: obj.test_combined_views_mapping() without return types