gecko-dev/dom/serviceworkers/test/notificationclick_focus.js

// Any copyright is dedicated to the Public Domain.
// http://creativecommons.org/publicdomain/zero/1.0/
//

function promisifyTimerFocus(client, delay) {
  return new Promise(function(resolve, reject) {
    setTimeout(function() {
      client.focus().then(resolve, reject);
    }, delay);
  });
}

onnotificationclick = function(e) {
  e.waitUntil(
    self.clients.matchAll().then(function(clients) {
      if (clients.length === 0) {
        dump(
          "********************* CLIENTS LIST EMPTY! Test will timeout! ***********************\n"
        );
        return Promise.resolve();
      }

      var immediatePromise = clients[0].focus();
      var withinTimeout = promisifyTimerFocus(clients[0], 100);

      var afterTimeout = promisifyTimerFocus(clients[0], 2000).then(
        function() {
          throw "Should have failed!";
        },
        function() {
          return Promise.resolve();
        }
      );

      return Promise.all([immediatePromise, withinTimeout, afterTimeout])
        .then(function() {
          clients.forEach(function(client) {
            client.postMessage({ ok: true });
          });
        })
        .catch(function(ex) {
          dump("Error " + ex + "\n");
          clients.forEach(function(client) {
            client.postMessage({ ok: false });
          });
        });
    })
  );
};