code: def test_einsum_failed_on_p9_and_s390x(self):
      # Issues gh-14692 and gh-12689
      # Bug with signed vs unsigned char errored on power9 and s390x Linux
      tensor = np.random.random_sample((10, 10, 10, 10))
      x = np.einsum("ijij->", tensor)
      y = tensor.trace(axis1=0, axis2=2).trace()
      assert_allclose(x, y)
  
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 27 for calling the TestEinsum obj's underlying member method code with example usage: obj.test_einsum_failed_on_p9_and_s390x() without return types