Method testRemoveElement

src/test/java/org/mapdb/BTreeSet3Test.java:236–252

()

     * remove(x) removes x and returns true if present
     */
    public void testRemoveElement() {
        NavigableSet q = populatedSet(SIZE);
        for (int i = 1; i < SIZE; i+=2) {
            assertTrue(q.contains(i));
            assertTrue(q.remove(i));
            assertFalse(q.contains(i));
            assertTrue(q.contains(i-1));
        }
        for (int i = 0; i < SIZE; i+=2) {
            assertTrue(q.contains(i));
            assertTrue(q.remove(i));
            assertFalse(q.contains(i));
            assertFalse(q.remove(i+1));
            assertFalse(q.contains(i+1));
        }
        assertTrue(q.isEmpty());
    }

    /*
     * contains(x) reports true when elements added but not yet removed