@Test(expectedExceptions = NoSuchElementException.class)
public void emptySetTest() {
WeakHashSet<MyReclaimable> hs = new WeakHashSet<MyReclaimable>();
assertEquals(hs.size(), 0);
Iterator<MyReclaimable> it = hs.iterator();
it.next();
}
@Test
public void gcTest() throws Exception {
WeakHashSet<MyReclaimable> hs;
Set<MyReclaimable> s = new HashSet<MyReclaimable>();
s.add(new MyReclaimable("one"));
s.add(new MyReclaimable("two"));
s.add(new MyReclaimable("three"));
hs = new WeakHashSet<MyReclaimable>(s);
assertEquals(hs.size(), 3);
assertFalse(hs.isEmpty());
s.clear();
Thread.sleep(2000);
gc();
Thread.sleep(2000);
assertEquals(hs.size(), 0);
}
@Test
public void fromExistingSetTest() {
WeakHashSet<MyReclaimable> hs;
Set<MyReclaimable> s = new HashSet<MyReclaimable>();
hs = new WeakHashSet<MyReclaimable>(s);
assertEquals(hs.size(), 0);
assertTrue(hs.isEmpty());
s.add(new MyReclaimable("hello"));
hs = new WeakHashSet<MyReclaimable>(s);
assertEquals(hs.size(), 1);
assertTrue(!hs.isEmpty());
assertTrue(hs.contains(new MyReclaimable("hello")));
Iterator<MyReclaimable> it = hs.iterator();
boolean found = false;
while (it.hasNext()) {
MyReclaimable value = it.next();
if (value.equals(new MyReclaimable("hello"))) {
found = true;
}
}
assertTrue(found);
assertTrue(!hs.add(new MyReclaimable("hello")));
assertEquals(hs.size(), 1);
assertTrue(hs.add(new MyReclaimable("goodbye")));
assertEquals(hs.size(), 2);
assertTrue(!hs.add(new MyReclaimable("goodbye")));
assertEquals(hs.size(), 2);
assertTrue(hs.remove(new MyReclaimable("goodbye")));
assertEquals(hs.size(), 1);
assertFalse(hs.remove(new MyReclaimable("goodbye")));
assertEquals(hs.size(), 1);
hs.clear();
assertEquals(hs.size(), 0);
s.clear();
}