@Test void testPartialIterationWithThree2() { List<Integer> list1 = createList(4); Enumeration<Integer> it1 = e(list1.iterator()); List<Integer> list2 = createList(3); Enumeration<Integer> it2 = e(list2.iterator()); List<Integer> list3 = createList(2); Enumeration<Integer> it3 = e(list3.iterator()); it1.nextElement(); it2.nextElement(); it2.nextElement(); it2.nextElement(); it3.nextElement(); CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(it1, it2, it3); int count = 0; StringBuilder sb = new StringBuilder(); while (compositeEnumeration.hasMoreElements()) { Integer next = compositeEnumeration.nextElement(); sb.append(next); count++; } assertEquals(4, count); assertEquals("1231", sb.toString()); }
@Test void testRemoveWithThree() { List<Integer> list1 = createList(4); List<Integer> list2 = new ArrayList<>(); List<Integer> list3 = createList(4); int count = list1.size() + list2.size() + list3.size(); CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(); compositeEnumeration.add(e(list1.iterator())); compositeEnumeration.add(e(list2.iterator())); compositeEnumeration.add(e(list3.iterator())); while (compositeEnumeration.hasMoreElements()) { compositeEnumeration.nextElement(); count--; } assertEquals(0, count); }
@Test void testPartialIterationWithThree1() { List<Integer> list1 = createList(4); Enumeration<Integer> it1 = e(list1.iterator()); List<Integer> list2 = createList(3); Enumeration<Integer> it2 = e(list2.iterator()); List<Integer> list3 = createList(2); Enumeration<Integer> it3 = e(list3.iterator()); it1.nextElement(); it2.nextElement(); it3.nextElement(); CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(it1, it2, it3); int count = 0; StringBuilder sb = new StringBuilder(); while (compositeEnumeration.hasMoreElements()) { Integer next = compositeEnumeration.nextElement(); sb.append(next); count++; } assertEquals(6, count); assertEquals("123121", sb.toString()); }
@Test void testRemoveWithOne() { CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(); List<Integer> list = createList(4); compositeEnumeration.add(e(list.iterator())); int count = list.size(); while (compositeEnumeration.hasMoreElements()) { compositeEnumeration.nextElement(); count--; } assertEquals(0, count); }
@Test void testNextWithTwo() { CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(); List<Integer> list = createList(4); int count = list.size(); compositeEnumeration.add(e(list.iterator())); list = createList(4); count += list.size(); compositeEnumeration.add(e(list.iterator())); StringBuilder sb = new StringBuilder(); while (compositeEnumeration.hasMoreElements()) { sb.append(compositeEnumeration.nextElement()); count--; } assertEquals(0, count); assertEquals("01230123", sb.toString()); }
@Test void testRemoveWithTwo() { List<Integer> list1 = createList(4); List<Integer> list2 = createList(4); int count = list1.size() + list2.size(); CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(); compositeEnumeration.add(e(list1.iterator())); compositeEnumeration.add(e(list2.iterator())); while (compositeEnumeration.hasMoreElements()) { compositeEnumeration.nextElement(); count--; } assertEquals(0, count); }
@Test void testNextWithThree() { List<Integer> list1 = createList(4); List<Integer> list2 = createList(4); List<Integer> list3 = createList(4); int count = list1.size() + list2.size() + list3.size(); CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(); compositeEnumeration.add(e(list1.iterator())); compositeEnumeration.add(e(list2.iterator())); compositeEnumeration.add(e(list3.iterator())); while (compositeEnumeration.hasMoreElements()) { compositeEnumeration.nextElement(); count--; } assertEquals(0, count); }
@Test void testNextWithOne() { CompositeEnumeration<Integer> compositeEnumeration = new CompositeEnumeration<>(); try { compositeEnumeration.nextElement(); fail("error"); } catch (NoSuchElementException e) { // ignore } List<Integer> list = createList(4); Enumeration<Integer> e = e(list.iterator()); compositeEnumeration.add(e); try { compositeEnumeration.add(e); fail("error"); } catch (IllegalArgumentException iaex) { // ignore } int count = list.size(); StringBuilder sb = new StringBuilder(); while (compositeEnumeration.hasMoreElements()) { sb.append(compositeEnumeration.nextElement()); count--; } assertEquals(0, count); assertEquals("0123", sb.toString()); }