Dactyloidae/dom/tests/mochitest/fetch/file_fetch_controller.html

<script>
function ok(a, msg) {
  parent.postMessage({ type: "check", status: !!a, message: msg }, "*");
}

function is(a, b, msg) {
  ok(a === b, msg);
}

function testWebIDL() {
  ok("FetchController" in self, "We have a FetchController prototype");
  ok("FetchSignal" in self, "We have a FetchSignal prototype");

  var fc = new FetchController();
  ok(!!fc, "FetchController can be created");
  ok(fc instanceof FetchController, "FetchController is a FetchController");

  ok(!!fc.signal, "FetchController has a signal");
  ok(fc.signal instanceof FetchSignal, "fetchSignal is a FetchSignal");
  is(fc.signal.aborted, false, "By default FetchSignal.aborted is false");
  next();
}

function testUpdateData() {
  var fc = new FetchController();
 
  is(fc.signal.aborted, false, "By default FetchSignal.aborted is false");
 
  fc.abort();
  is(fc.signal.aborted, true, "Signal is aborted");
 
  next();
}
 
function testFollowingOurself() {
  // Let's follow ourself
  var fc = new FetchController();
  fc.follow(fc.signal);
 
  fc.abort();
  is(fc.signal.aborted, true, "Signal is aborted");
 
  next();
}
 
function testFollowingOther() {
  // Let's follow another one
  var fc1 = new FetchController();
  var fc2 = new FetchController();
  fc1.follow(fc2.signal);
 
  fc2.abort();
 
  is(fc1.signal.aborted, true, "Signal is aborted");
  is(fc2.signal.aborted, true, "Signal is aborted");
 
  next();
}

function testFollowingLoop() {
  // fc1 -> fc2 -> fc3 -> fc1
  var fc1 = new FetchController();
  var fc2 = new FetchController();
  var fc3 = new FetchController();
  fc1.follow(fc2.signal);
  fc2.follow(fc3.signal);
  fc3.follow(fc1.signal);
 
  fc3.abort();
 
  is(fc1.signal.aborted, true, "Signal is aborted");
  is(fc2.signal.aborted, true, "Signal is aborted");
  is(fc3.signal.aborted, true, "Signal is aborted");
 
  next();
}
 
function testAbortEvent() {
  var fc = new FetchController();
  fc.signal.onabort = function(e) {
    is(e.type, "abort", "Abort received");
    next();
  }
  fc.abort();
}
 
var steps = [
  testWebIDL,
  testUpdateData,
  testFollowingOurself,
  testFollowingOther,
  testFollowingLoop,
  testAbortEvent,
];

function next() {
  if (!steps.length) {
    parent.postMessage({ type: "finish" }, "*");
    return;
  }

  var step = steps.shift();
  step();
}

next();

</script>