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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_not_equals(obj.contentWindow, null, "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.unreached_func("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_not_equals(obj.contentWindow, null, "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.unreached_func("The error event should not be fired.");
+
+ document.body.appendChild(obj);
+}, "load event of initial about:blank");
+</script>
+</body>