test(() => {
  let match_standard = window.matchMedia("(update: slow)");
  assert_false(match_standard.matches);
}, "Check that update: slow doesn't match fast displays");

test(() => {
  let match_standard = window.matchMedia("(update: none)");
  assert_false(match_standard.matches);
}, "Check that update: none doesn't match fast displays");

test(() => {
  let match_standard = window.matchMedia("(update)");
  assert_true(match_standard.matches);
}, "Check that update always matches non printing documents"