@Test
public void testSpansNot() throws IOException {

    Spans exp = MockSpans.fromLists(
            new int[] { 0, 1, 2, 2, 2, 4, 4, 4, 4, 4 },
            new int[] { 4, 0, 0, 2, 4, 0, 1, 2, 3, 4 },
            new int[] { 5, 1, 1, 3, 5, 1, 2, 3, 4, 5 });
    TestUtil.assertEquals(exp, getSpans());
}