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Test Info:

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./support/testharness-helper.sub.js"></script>
<body></body>
<script>
function waitForViolation(el, t, policy, blockedURI) {
return new Promise(resolve => {
el.addEventListener('securitypolicyviolation', e => {
if (e.originalPolicy == policy && e.blockedURI == blockedURI)
resolve(e);
else
t.unreached_func("Unexpected violation event for " + e.blockedURI)();
});
});
}
async_test(t => {
var i = document.createElement("img");
var redirect = generateCrossOriginRedirectImage();
i.src = redirect.url;
// Report-only policy should trigger a violation on the redirected request.
waitForViolation(window, t, "img-src https:", new URL(redirect.url, window.location).href).then(t.step_func(e => {
t.done();
}));
document.body.appendChild(i);
}, "Image that redirects to http:// URL prohibited by Report-Only must generate a violation report, even with upgrade-insecure-requests");
</script>
</html>