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<!DOCTYPE html>
<meta charset="utf-8">
<body></body>
<script>
const URL = 'opaque-response?from=opaque-response-being-preloaded-xhr.html';
function runTest() {
var l = document.createElement('link');
// Use link rel=preload to try to get the browser to cache the opaque
// response.
l.setAttribute('rel', 'preload');
l.setAttribute('href', URL);
l.setAttribute('as', 'fetch');
l.onerror = function() {
parent.done('FAIL: preload failed unexpectedly');
};
document.body.appendChild(l);
xhr = new XMLHttpRequest;
xhr.withCredentials = true;
xhr.open('GET', URL);
// opaque-response returns an opaque response from serviceworker and thus
// the XHR must fail because it is not no-cors request.
// Particularly, the XHR must not reuse the opaque response from the
// preload request.
xhr.onerror = function() {
parent.done('PASS');
};
xhr.onload = function() {
parent.done('FAIL: ' + xhr.responseText);
};
xhr.send();
}
</script>
<body onload="setTimeout(runTest, 100)"></body>
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