public void setUp() throws Exception {
        super.setUp();
        ex = _persistit.getExchange("persistit", "BufferTest", true);
        b1 = ex.getBufferPool().get(ex.getVolume(), 1, true, false);
        b2 = ex.getBufferPool().get(ex.getVolume(), 2, true, false);
        while (sb.length() < Buffer.MAX_BUFFER_SIZE) {
            sb.append(RED_FOX);
        }
        vw = new RawValueWriter();
        vw.init(ex.getValue());

    }