"/filterPath", "../");
UrlRenderer r = new UrlRenderer(request);
assertEquals("../../../../../", r.renderContextRelativeUrl(""));
assertEquals("../../../../../", r.renderContextRelativeUrl("/"));
assertEquals("../../../../../f", r.renderContextRelativeUrl("/f"));
assertEquals("../../../../../../f", r.renderContextRelativeUrl("../f"));
try
{
r.renderContextRelativeUrl(null);