pan).color, "rgb(255, 255, 255)", "with the adopted sheet disabled, the non-adopted style should take effect");

  sheet.disabled = false;
  assert_equals(getComputedStyle(span).color, "rgb(255, 0, 0)", "the adopted sheet re-enabled, it should take effect again")
}, 'Adopted sheets are ordered after non-adopted sheets in the document')

const import_text = '@import url("support/constructable-import.css");';

test(() => {
  assert_throws_dom("SyntaxError", () => { (new CSSStyleSheet).insertRule(import_text) 