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Test Info: Warnings

Test that NEL reports are not sent if the CORS preflight fails
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src='./support/nel.sub.js'></script>
nel_test(async t => {
// Make a request to a resource whose response headers include a NEL
// policy, but where the report uploader will reject the CORS preflight.
await fetchResourceWithBasicPolicy('www2');
// Because the CORS preflight is rejected, we should never receive a
// report about the request.
assert_false(await reportExists({
url: getURLForResourceWithBasicPolicy('www2'),
type: "network-error",