Method testPollFirst

src/test/java/org/mapdb/BTreeSet2Test.java:261–267

()

     * pollFirst succeeds unless empty
     */
    public void testPollFirst() {
        NavigableSet q = populatedSet(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            assertEquals(i, q.pollFirst());
        }
        assertNull(q.pollFirst());
    }

    /*
     * pollLast succeeds unless empty