element should not submit an entry for it');

test(() => {
  const control = new MyControl();
  document.body.appendChild(control);
  control.setAttribute('tabindex', '0');
  control.setAttribute('disabled', '');
  control.focus();
  assert_not_equals(document.activeElement, control);

  control.removeAttribute('disabled');
  control.focus();
  assert_equals(document.activeElement, control);
}, 'Disabled attribute affects focus-capability');

test(() => {
  const container = document.createElement('div');
 