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Test Info:

<!doctype html>
<html>
<head>
<title>ProgressEvent: security consideration</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://xhr.spec.whatwg.org/#security-considerations" data-tested-assertations="/following-sibling::p" />
<link rel="help" href="https://fetch.spec.whatwg.org/#http-fetch" data-tested-assertations="/following-sibling::ol[1]/li[3]/ol[1]/li[6]" />
</head>
<body>
<div id="log"></div>
<script>
async_test(function() {
var xhr = new XMLHttpRequest();
xhr.onprogress = this.unreached_func("MUST NOT dispatch progress event.");
xhr.onload = this.unreached_func("MUST NOT dispatch load event.");
xhr.onerror = this.step_func(function(pe) {
assert_equals(pe.type, "error");
assert_equals(pe.loaded, 0, "loaded is zero.");
assert_false(pe.lengthComputable, "lengthComputable is false.");
assert_equals(pe.total, 0, "total is zero.");
});
xhr.onloadend = this.step_func(function(pe) {
assert_equals(pe.type, "loadend");
assert_equals(pe.loaded, 0, "loaded is zero.");
assert_false(pe.lengthComputable, "lengthComputable is false.");
assert_equals(pe.total, 0, "total is zero.");
this.done();
});
xhr.send(null);
})
</script>
</body>
</html>