@Test
 public void addKost2() {
   logon(TEST_FINANCE_USER);
   final TaskDO task1 = initTestDB.addTask("addKost2", "root");
   final ProjektDO projekt =
       new ProjektDO().setName("addKost2").setInternKost2_4(128).setNummer(5).setTask(task1);
   projektDao.save(projekt);
   final Kost2ArtDO kost2Art = new Kost2ArtDO().withId(42);
   final Kost2DO kost =
       new Kost2DO().setNummernkreis(4).setBereich(128).setTeilbereich(5).setKost2Art(kost2Art);
   assertEquals("42", TaskHelper.addKost2(taskTree, task1, kost));
   assertEquals(
       "12,42,6.001.02.89",
       TaskHelper.addKost2(taskTree, task1.setKost2BlackWhiteList("12,6.001.02.89,12"), kost));
   final TaskDO task2 = new TaskDO();
   assertEquals("4.128.05.42", TaskHelper.addKost2(taskTree, task2, kost));
   task2.setKost2BlackWhiteList("12,6.001.02.89");
   assertEquals("12,4.128.05.42,6.001.02.89", TaskHelper.addKost2(taskTree, task2, kost));
 }
 @Test
 public void normalizeKost2BlackWhiteList() {
   final TaskDO task = new TaskDO().setKost2BlackWhiteList(null);
   assertNull(TaskHelper.normalizeKost2BlackWhiteList(task));
   assertEquals("", TaskHelper.normalizeKost2BlackWhiteList(task.setKost2BlackWhiteList("")));
   assertEquals("1", TaskHelper.normalizeKost2BlackWhiteList(task.setKost2BlackWhiteList("1")));
   assertEquals(
       ".89,45,5.212.01.12",
       TaskHelper.normalizeKost2BlackWhiteList(
           task.setKost2BlackWhiteList("5.212.01.12, 45;  .89")));
   assertEquals(
       ".89,45,5.212.01.12",
       TaskHelper.normalizeKost2BlackWhiteList(
           task.setKost2BlackWhiteList("5.212.01.12,, 45;  .89")));
   assertEquals(
       ".89,45,5.212.01.12",
       TaskHelper.normalizeKost2BlackWhiteList(
           task.setKost2BlackWhiteList("5.212.01.12, , 45;  .89,45")));
 }