<!DOCTYPE html> <link rel="help" href="https://w3c.github.io/screen-wake-lock/#the-screen-wake-lock-powerful-feature"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="/resources/testdriver.js"></script> <script src="/resources/testdriver-vendor.js"></script> <script> promise_test(async t => { await test_driver.set_permission({name: 'screen-wake-lock'}, 'denied'); return navigator.permissions.query({name:'screen-wake-lock'}).then(status => { assert_class_string(status, "PermissionStatus"); assert_equals(status.state, "denied"); }); }, "PermissionDescriptor with name='screen-wake-lock' works"); </script>