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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<body>
<script>
// A cross-origin response containing JavaScript, labelled as text/csv.
const probeUrl = get_host_info().HTTPS_REMOTE_ORIGIN +
"/fetch/corb/resources/response_block_probe.js";
// Test handling of blocked responses in CORB/ORB for <script> elements.
function probe_script() {
// We will cross-origin load a script resource that should get blocked by all
// versions of CORB/ORB. Two things may happen:
//
// 1, An empty response is injected. (What CORB does.)
// 2, An error is injected and script loading aborts. (What ORB does.)
// Load the probe as a script.
const script = document.createElement("script");
script.src = probeUrl;
document.body.appendChild(script);
// Return a promise that will return a string description corresponding to the
// conditions above.
return new Promise((resolve, reject) => {
script.onload = _ => resolve("Resource loaded (expected for CORB)");
script.onerror = _ => resolve("ORB-style network error");
});
}
// Test handling of blocked responses in CORB/ORB for script-initiated fetches.
function probe_fetch() {
return fetch(probeUrl, {mode: "no-cors"})
.then(response => response.text())
.then(text => {
assert_equals(text, "");
return "Resource loaded (expected for CORB)";
})
.catch(_ => "ORB-style network error");
}
// These tests check for ORB behaviour.
promise_test(t => probe_script().then(
value => assert_equals(value, "ORB-style network error")),
"ORB: Expect error response from <script> fetch.");
promise_test(t => probe_fetch().then(
value => assert_equals(value, "ORB-style network error")),
"ORB: Expect error response from fetch().");
</script>
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