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chromium/third_party/blink/web_tests/external/wpt/battery-status/battery-allowed-by-permissions-policy-attribute-redirect-on-load.https.sub.html 

<!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>
'use strict';

const relative_path = '/permissions-policy/resources/permissions-policy-battery.html';
const base_src = '/permissions-policy/resources/redirect-on-load.html#';
const same_origin_src = base_src + relative_path;
const cross_origin_src = base_src + 'https://{{domains[www]}}:{{ports[https][0]}}' +
  relative_path;
const header = 'permissions policy allow="battery"';

async_test(t => {
  test_feature_availability(
      'navigator.getBattery()', t, same_origin_src,
      expect_feature_available_default, 'battery');
}, `${header} allows same-origin relocation.`);

async_test(t => {
  test_feature_availability(
      'navigator.getBattery()', t, cross_origin_src,
      expect_feature_unavailable_default, 'battery');
}, `${header} disallows cross-origin relocation.`);
</script>
</body>