| Tests form.elements is invalidated when input element's form attribute is changed. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| collection = document.getElementById('someForm').elements; | |
| PASS collection.length is 1 | |
| PASS collection.length; input.setAttribute('form', 'otherForm'); collection.length is 0 | |
| PASS collection.length; input.setAttribute('form', 'someForm'); collection.length is 1 | |