Method test_index_unicode

numpy/_core/tests/test_strings.py:1186–1189

(self, buf, sub, start, end, res, dt)

        ("Ae¢☃€ 😊" * 2, "😊", 7, None, 13),
    ])
    def test_index_unicode(self, buf, sub, start, end, res, dt):
        buf = np.array(buf, dtype=dt)
        sub = np.array(sub, dtype=dt)
        assert_array_equal(np.strings.index(buf, sub, start, end), res)

    def test_index_raises_unicode(self, dt):
        with pytest.raises(ValueError, match="substring not found"):