CandlepinPersistFilter implements Filter { @Override public void destroy() { } @Inject  CandlepinPersistFilter(UnitOfWork unitOfWork); @Override void doFilter(ServletRequest request, ServletResponse response,
        FilterChain chain); @Override void init(FilterConfig arg0); @Override void destroy();  }
@Test public void destroy() { filter.destroy(); verifyZeroInteractions(work); }