File: iframe-load-event.html

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<!doctype html>
<meta charset=utf-8>
<title>Test some sanity behavior around iframe load/error events</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<body>
<script>
async_test(function(t) {
  var obj = document.createElement("iframe");
  obj.onload = t.step_func_done(function(e){
    assert_true(obj.contentWindow instanceof Window, "The iframe element should represent a nested browsing context.")
    assert_equals(Object.getPrototypeOf(e).constructor, Event, "The load event should use the Event interface.");
    assert_true(e.isTrusted, "The load event should be a trusted event.");
    assert_false(e.cancelable, "The load event should not be a cancelable event.");
    assert_false(e.bubbles, "The load event should not be a bubble event.");
    assert_equals(e.target, obj, "The load event target should be the corresponding object element.");
  });

  obj.onerror = t.step_func_done(function(e){
    assert_unreached("The error event should not be fired.");
  });

  var url = URL.createObjectURL(new Blob([""], { type: "text/html" }));

  obj.src = url;
  document.body.appendChild(obj);
}, "load event of blob URL");

async_test(function(t) {
  var obj = document.createElement("iframe");
  obj.onload = t.step_func_done(function(e){
    assert_true(obj.contentWindow instanceof Window, "The object element should represent a nested browsing context.")
    assert_equals(Object.getPrototypeOf(e).constructor, Event, "The load event should use the Event interface.");
    assert_true(e.isTrusted, "The load event should be a trusted event.");
    assert_false(e.cancelable, "The load event should not be a cancelable event.");
    assert_false(e.bubbles, "The load event should not be a bubble event.");
    assert_equals(e.target, obj, "The load event target should be the corresponding object element.");
  });

  obj.onerror = t.step_func_done(function(e){
    assert_unreached("The error event should not be fired.");
  });

  document.body.appendChild(obj);
}, "load event of initial about:blank");

</script>
</body>