@Ignore
@Test
public void test_nextValue() throws SequenceException {

    Set<Long> set = new HashSet<Long>();
    for (int i = 0; i < 10000000; i++) {
        Long id = sequence.nextValue();
        boolean b = set.contains(id);
        Assert.assertFalse(b);
        set.add(id);
    }
}