Method testContainsAll

src/test/java/org/mapdb/BTreeSet3Test.java:283–292

()

     * containsAll(c) is true when c contains a subset of elements
     */
    public void testContainsAll() {
        NavigableSet q = populatedSet(SIZE);
        NavigableSet p = set0();
        for (int i = 0; i < SIZE; ++i) {
            assertTrue(q.containsAll(p));
            assertFalse(p.containsAll(q));
            p.add(new Integer(i));
        }
        assertTrue(p.containsAll(q));
    }

    /*
     * retainAll(c) retains only those elements of c and reports true if changed