<!doctype html>
<title>Historical object element features should not be supported</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<object id=object></object>
<script>
test(function() {
  var elm = document.getElementById('object');
  assert_equals(typeof elm, 'object', 'typeof');
  assert_throws_js(TypeError, function() {
    elm();
  });
}, 'object legacycaller should not be supported');

test(() => {
  const obj = document.createElement("object");
  assert_false("typeMustMatch" in obj);
}, "object's typeMustMatch IDL attribute should not be supported");

async_test(t => {
  const obj = document.createElement("object");
  t.add_cleanup(() => obj.remove());
  obj.setAttribute("data", "/common/blank.html");
  obj.setAttribute("type", "text/plain");
  obj.setAttribute("typemustmatch", "");
  obj.onload = t.step_func_done(() => {
    assert_not_equals(obj.contentDocument, null, "/common/blank.html should be loaded");
  });
  obj.onerror = t.unreached_func();
  document.body.appendChild(obj);
}, "object's typemustmatch content attribute should not be supported");
</script>
