Harness status: OK Found 14 tests 14 Pass Pass willValidate Pass willValidate after upgrade Pass willValidate after upgrade (document.createElement) Pass willValidate should throw NotSupportedError if the target element is not a form-associated custom element Pass validity and setValidity() Pass validity.customError should be false if not explicitly set via setValidity() Pass "anchor" argument of setValidity() Pass "anchor" argument of setValidity(): passing self Pass checkValidity() should throw NotSupportedError if the target element is not a form-associated custom element Pass checkValidity() Pass reportValidity() should throw NotSupportedError if the target element is not a form-associated custom element Pass reportValidity() Pass Custom control affects validation at the owner form Pass Custom control affects :valid :invalid for FORM and FIELDSET