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<!DOCTYPE html>
<html>
<head>
<!-- Headers:
Content-Security-Policy: prefetch-src 'none'
Link: </content-security-policy/support/fail.png>;rel=prefetch
-->
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src='/content-security-policy/support/testharness-helper.js'></script>
<script src='/content-security-policy/support/prefetch-helper.js'></script>
<script>
async_test(t => {
let url = window.origin + '/content-security-policy/support/fail.png';
waitUntilCSPEventForURL(t, url)
.then(t.step_func_done(e => {
assert_equals(e.violatedDirective, 'prefetch-src');
// This assert verifies both that the resource wasn't downloaded
// when prefetched via `Link` on both this document itself, and
// on the stylesheet subresource below.
assert_resource_not_downloaded(t, url);
}));
// Load a stylesheet that tries to trigger a prefetch:
let link = document.createElement('link');
link.rel = 'stylesheet';
link.href = '/content-security-policy/support/prefetch-subresource.css';
document.head.appendChild(link);
}, 'Prefetch via `Link` header blocked when allowed by prefetch-src');
</script>
</head>
<body>
</body>
</html>
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