final ServletResponse response = createStrictMock(ServletResponse.class);
final FilterChain chain = createStrictMock(FilterChain.class);
expect(request.getAttribute(Log4jServletFilter.ALREADY_FILTERED_ATTRIBUTE)).andReturn(true);
expectLastCall();
chain.doFilter(same(request), same(response));
expectLastCall();
replay(this.filterConfig, this.servletContext, this.initializer, request, response, chain);
this.filter.doFilter(request, response, chain);