uals(document.body.innerText, "abcdefghijkl");
  }, "document.write(TrustedHTML, TrustedHTML)");

  test(t => {
    document.body.innerText = '';
    let p = createHTML_policy(window, 1);
    let a = p.createHTML("abcdef");
    let b = p.createHTML("ghijkl");
    document.writeln(a, b);
    assert_equals(document.body.innerText, "abcdefghijkl");
  }, "document.writeln(TrustedHTML, TrustedHTML)");

  test(t => {
    document.body.innerText = '';
    let p = createHTML_policy(window, 1);
    let a = p.createH