I don't think you need all these cases.

- the issue only concerns relative links so the last 2 cases are not relevant as they are not relative
- the first 2 cases are redundant. All we need is testing that the relative link is not confused by the query string. We don't need to verify it in both cases you used as subdirs are already handled by other test cases
- you should remove the query string in the link. It is not relevant for the test and may confuse users about the purpose of the test.

```php
array('foo', 'http://localhost/bar/baz?/query/string', 'http://localhost/bar/foo'),
```