public void testRetainAll() throws Exception {
int[] ints = {1138, 42, 13, 86, 99, 101};
TIntSet set = new TIntHashSet();
set.addAll(ints);
TIntSet other = new TIntHashSet();
other.addAll(ints);
int[] to_retain = {13, 86, 99, 1138};
TIntSet retain_set = new TIntHashSet();
retain_set.addAll(to_retain);
List<Integer> retain_list = new ArrayList<Integer>();
for (int element : to_retain) {
retain_list.add(element);
}
assertFalse("retainAll(TIntSet) failed (same set): " + set, set.retainAll(set));
// Contains all the original elements
assertTrue(set.toString(), set.containsAll(ints));
assertTrue(retain_set.toString(), retain_set.containsAll(to_retain));
assertTrue("retainAll(Collection<?>) failed: " + set, set.retainAll(retain_list));
// Contains just the expected elements
assertFalse(set.toString(), set.containsAll(ints));
assertTrue(set.toString(), set.containsAll(to_retain));
assertTrue(retain_set.toString(), retain_set.containsAll(to_retain));
// reset the set.
set = new TIntHashSet();
set.addAll(ints);
assertTrue("retainAll(TIntSet) failed: " + set, set.retainAll(retain_set));
// Contains just the expected elements
assertFalse(set.toString(), set.containsAll(ints));
assertTrue(set.toString(), set.containsAll(to_retain));
assertTrue(retain_set.toString(), retain_set.containsAll(to_retain));
// reset the set.
set = new TIntHashSet();
set.addAll(ints);
assertTrue("retainAll(int[]) failed: " + set, set.retainAll(to_retain));
// Contains just the expected elements
assertFalse(set.toString(), set.containsAll(ints));
assertTrue(set.toString(), set.containsAll(to_retain));
assertTrue(retain_set.toString(), retain_set.containsAll(to_retain));
}
