Function add_completion_callback

test/fixtures/wpt/resources/testharness.js:4249–4251

* Add a callback that's triggered when all tests are complete. * * @param {Function} callback - Callback function, called with an * array of :js:class:`Test` objects, a :js:class:`TestsStatus` * object and an array of :js:class:`AssertRecord` objects. If the * debug setting

(callback)

     * empty.
     */
    function add_completion_callback(callback) {
        tests.all_done_callbacks.push(callback);
    }

    expose(add_start_callback, 'add_start_callback');
    expose(add_test_state_callback, 'add_test_state_callback');