@Test
public void testExpandSimple() {

    List schema = Arrays.asList(new Object(), new Object(), new Object(), new Object());
    List<List> expected = Arrays.asList(
            (List) Arrays.asList(1, 2, 3, 4)
    );
    List<List> actual = PartnerResultToCrtesianTable.expand(expected, schema);
    assertEquals(actual, expected);
}