private static void runUnifiedSetRetainAllFromSet(int shift) {
MultiReaderUnifiedSet<CollidingInt> set = MultiReaderUnifiedSet.newSet();
Set<CollidingInt> toRetain = new HashSet<CollidingInt>();
int size = 100000;
for (int i = 0; i < size; i++) {
set.add(new CollidingInt(i, shift));
if (i % 2 == 0) {
toRetain.add(new CollidingInt(i, shift));
}
}
Verify.assertSize(size, set);
Assert.assertTrue(set.containsAll(toRetain));
Assert.assertTrue(set.retainAll(toRetain));
Assert.assertTrue(set.containsAll(toRetain));
Assert.assertFalse(set.retainAll(toRetain)); // a second call should not modify the set
Verify.assertSize(size / 2, set);
for (int i = 0; i < size; i += 2) {
Verify.assertContains(new CollidingInt(i, shift), set);
}
}
