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<!DOCTYPE html>
<head>
<title>Deferred loading=lazy iframes are fetched with the parse-time
`referrerpolicy` attribute</title>
<link rel="author" title="Dom Farolino" href="mailto:dom@chromium.org">
<link rel="author" title="Raj T" href="mailto:rajendrant@chromium.org">
<link rel="help" href="https://github.com/scott-little/lazyload">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/common.js"></script>
</head>
<script>
const below_viewport_iframe = new ElementLoadPromise("below_viewport_iframe");
async_test(function(t) {
// Change the referrer-policy and scroll down to load the deferred elements.
window.addEventListener("load", t.step_func(() => {
below_viewport_iframe.element().referrerPolicy = "no-referrer";
below_viewport_iframe.element().scrollIntoView();
}));
below_viewport_iframe.promise.then(
t.step_func_done(function() {
// The `Referer` header should be the full URL, as specified by the
// iframe's `referrerpolicy` attribute at parse-time, and not the origin
// (as specified in meta referrer tag) or null (as overridden
// referrerpolicy=no-referrer after load deferral).
assert_true(below_viewport_iframe.element().contentDocument.body.innerHTML
.includes("Referer: http://{{location[host]}}{{location[path]}}"),
"The iframe's `Referer` should be the referrer's full URL");
}));
}, "Test that when a deferred iframe is fetched, it uses the " +
"`referrerpolicy` specified at parse-time");
</script>
<body>
<meta name="referrer" content="origin">
<div style="height:1000vh;"></div>
<iframe id="below_viewport_iframe" src="/xhr/resources/echo-headers.py"
loading="lazy" width="200px" height="100px"
referrerpolicy="unsafe-url"
onload="below_viewport_iframe.resolve();">
</iframe>
</body>
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