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<html>
<head>
  <title>Bug 982726 - Test service worker post message </title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
<script class="testbody" type="text/javascript">
  var registration;
  function start() {
    return navigator.serviceWorker.register("opaque_intercept_worker.js",
                                            { scope: "./sw_clients/" })
      .then((swr) => registration = swr);
  }

  function unregister() {
    return registration.unregister().then(function(result) {
      ok(result, "Unregister should return true.");
    }, function(e) {
      dump("Unregistering the SW failed with " + e + "\n");
    });
  }


  function testOpaqueIntercept(swr) {
    var p = new Promise(function(res, rej) {
      var ready = false;
      var scriptLoaded = false;
      window.onmessage = function(e) {
        if (e.data === "READY") {
          ok(!ready, "ready message should only be received once");
          ok(!scriptLoaded, "ready message should be received before script loaded");
          if (ready) {
            res();
            return;
          }
          ready = true;
          iframe.contentWindow.postMessage("REFRESH", "*");
        } else if (e.data === "SCRIPT_LOADED") {
          ok(ready, "script loaded should be received after ready");
          ok(!scriptLoaded, "script loaded message should be received only once");
          scriptLoaded = true;
          res();
        }
      }
    });

    var content = document.getElementById("content");
    ok(content, "Parent exists.");

    var iframe = document.createElement("iframe");
    iframe.setAttribute('src', "sw_clients/refresher.html");
    content.appendChild(iframe);

    // Our service worker waits for us to finish installing. If it didn't do
    // this, then loading our frame would race with it becoming active,
    // possibly intercepting the first load of the iframe. This guarantees
    // that our iframe will load first directly from the network. Note that
    // refresher.html explicitly waits for the service worker to transition to
    // active.
    registration.installing.postMessage("ready");

    return p.then(() => content.removeChild(iframe));
  }

  function runTest() {
    start()
      .then(testOpaqueIntercept)
      .then(unregister)
      .catch(function(e) {
        ok(false, "Some test failed with error " + e);
      }).then(SimpleTest.finish);
  }

  SimpleTest.waitForExplicitFinish();
  SpecialPowers.pushPrefEnv({"set": [
    ["dom.serviceWorkers.exemptFromPerDomainMax", true],
    ["dom.serviceWorkers.enabled", true],
    ["dom.serviceWorkers.testing.enabled", true],
    ["dom.caches.enabled", true],
  ]}, runTest);
</script>
</pre>
</body>
</html>
