code: def test_small_boolean_arrays(self):
      # See gh-5946.
      # Use array of True embedded in False.
      a = np.zeros((16, 1, 1), dtype=np.bool_)[:2]
      a[...] = True
      out = np.zeros((16, 1, 1), dtype=np.bool_)[:2]
      tgt = np.ones((2, 1, 1), dtype=np.bool_)
      res = np.einsum("...ij,...jk->...ik", a, a, out=out)
      assert_equal(res, tgt)
  
imports: import functools
  import itertools
  from unittest import expectedFailure, skipIf, SkipTest
  import torch._numpy
  from pytest import raises
  from torch._numpy.testing import assert_, assert_allclose, assert_almost_equal, assert_array_equal, assert_equal, suppress_warnings
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, TestCase
label_desc: Use image node_id 22 for calling the TestEinsum obj's underlying member method code with example usage: obj.test_small_boolean_arrays() without return types