<!DOCTYPE html>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/permissions-policy/resources/permissions-policy.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script>
"use strict";

const same_origin_src =
  '/permissions-policy/resources/permissions-policy-compute-pressure.html';
const cross_origin_src = get_host_info().HTTPS_REMOTE_ORIGIN + same_origin_src;
const header = 'permissions policy header "compute-pressure=self"';

promise_test(async () => {
  try {
    const observer = new PressureObserver(() => {});
    await observer.observe("cpu");
    observer.disconnect();
  } catch (e) {
    assert_unreached('expected promise to resolve.');
  }
}, `${header} allows the top-level document.`);

async_test(t => {
  test_feature_availability(
    'ComputePressure.observe()',
    t,
    same_origin_src,
    expect_feature_available_default
  );
}, `${header} allows same-origin iframes.`);

async_test(t => {
  test_feature_availability(
    'ComputePressure.observe()',
    t,
    cross_origin_src,
    expect_feature_unavailable_default
  );
}, `${header} disallows cross-origin iframes.`);

</script>
</body>
