> My suggestion is to add a new test in Mink using the HTML5 attribute to ensure drivers support it properly. For browser controllers, it would depend of the underlying browser, but the only culprit is IE (as usual). However, I think it is fine if such test fail when running the Mink testsuite using IE as underlying driver (this way, people would know they should avoid it if they have to support IE).

Won't be hard to adapt this new `getFormNode` method to do that. Just check for `form` attribute and when present look for form with that ID (the value of `form` attribute) across all document.

But adding a failing test upfront is a good TDD practice anyway.