fullUrl = renderer.renderUrl(newUrl);
assertEquals("https://www.example.com:8888/four", fullUrl);
newUrl = Url.parse(".././four");
newUrl.setProtocol("https");
fullUrl = renderer.renderUrl(newUrl);
assertEquals("https://www.example.com:8888/four", fullUrl);
newUrl = Url.parse("../../../../four");
newUrl.setProtocol("https");
fullUrl = renderer.renderUrl(newUrl);