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