public void testNoIterators() {
CompositeIterator it = new CompositeIterator();
assertFalse(it.hasNext());
try {
it.next();
fail();
} catch (NoSuchElementException e) {
// expected
}
}
public void testDuplicateIterators() {
List list = Arrays.asList(new String[] {"0", "1"});
Iterator iterator = list.iterator();
CompositeIterator it = new CompositeIterator();
it.add(iterator);
it.add(list.iterator());
try {
it.add(iterator);
fail();
} catch (IllegalArgumentException e) {
// expected
}
}
public void testMultipleIterators() {
CompositeIterator it = new CompositeIterator();
it.add(Arrays.asList(new String[] {"0", "1"}).iterator());
it.add(Arrays.asList(new String[] {"2"}).iterator());
it.add(Arrays.asList(new String[] {"3", "4"}).iterator());
for (int i = 0; i < 5; i++) {
assertTrue(it.hasNext());
assertEquals(String.valueOf(i), it.next());
}
assertFalse(it.hasNext());
try {
it.next();
fail();
} catch (NoSuchElementException e) {
// expected
}
}
public void testInUse() {
List list = Arrays.asList(new String[] {"0", "1"});
CompositeIterator it = new CompositeIterator();
it.add(list.iterator());
it.hasNext();
try {
it.add(list.iterator());
fail();
} catch (IllegalStateException e) {
// expected
}
it = new CompositeIterator();
it.add(list.iterator());
it.next();
try {
it.add(list.iterator());
fail();
} catch (IllegalStateException e) {
// expected
}
}
