The previous test cases that tried to redirect to ../index.php and similar
might cause us to try to go to http://localhost/../index.php, which will
result in http://index.php. As this obviously will trigger an error as
intended, we should not put this inside our test cases for the redirect
function.
PHPBB3-11997
Controller routes that are supposed to link to parent directories can't be
tested as the links are incorrectly created depending on enabled mod rewrite
or not.
PHPBB3-11997
The controller will now output the expected redirect returns the same way the
redirect returns are output. The extension controller test will compare those
2 outputs.
PHPBB3-11997
