In some cases webservers like nginx send the escaped characters
lowercased to the Rails application. The current_page? helper was
comparing the escaped strings that are different since Ruby escapes the
URL using uppercased characters.
Use link_to with block and url_hash, expect block as name.
But ignore block and use url_hash as name.
3-2-stable passes this test. 4-0-stable and master fail this.