Harness status: OK

Found 6 tests

6 Pass
Pass	':required' matches required <input>s, <select>s and <textarea>s
Pass	':optional' matches elements <input>s, <select>s and <textarea>s that are not required
Pass	':required' doesn't match elements whose required attribute has been removed
Pass	':optional' matches elements whose required attribute has been removed
Pass	':required' matches elements whose required attribute has been added
Pass	':optional' doesn't match elements whose required attribute has been added