def test_works_when_different(self):
        a = np.array([[1, -1],
                      [2, 2]])
        b = np.array([[-1, -1],
                      [2, 2]])
        with self.assertRaises(AssertionError):
            npt.assert_equal(*_normalize_signs(a, b))
specials is an optional argument that permits arbitrary
dataset/ETHPy150Open biocore/scikit-bio/skbio/util/tests/test_testing.py/TestNormalizeSigns.test_works_when_different--crossover with--dataset/ETHPy150Open robclewley/compneuro/Entrain_teacher_copy.py/makeHHneuron