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<!doctype html>
<html>
<head>
<title>Resource Timing: PerformanceResourceTiming attributes shouldn't change
if the HTTP status code changes</title>
<link rel="help" href="https://www.w3.org/TR/resource-timing-2/#sec-performanceresourcetiming"/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src=/common/get-host-info.sub.js></script>
</head>
<body>
<img id="img_200">
<img id="img_307">
<img id="img_404">
<img id="img_502">
<script id="script_200"></script>
<script id="script_307"></script>
<script id="script_404"></script>
<script id="script_502"></script>
<script>
const listenForPerformanceEntries = num_expected => {
return new Promise(resolve => {
let results = [];
new PerformanceObserver(entryList => {
entryList.getEntries().forEach(entry => {
if (!entry.name.includes("status-code"))
return;
results.push(entry);
if (results.length == num_expected) {
resolve(results);
}
});
}).observe({entryTypes: ['resource']});
});
}
promise_test(async t => {
const destUrl = get_host_info().HTTP_REMOTE_ORIGIN + '/resource-timing/resources/';
const statusCodes = ['200', '307', '404', '502'];
let expected_entry_count = 0;
statusCodes.forEach(status => {
document.getElementById(`img_${status}`).src = `${destUrl}status-code.py?status=${status}`;
document.getElementById(`script_${status}`).src = `${destUrl}status-code.py?status=${status}&script=1`;
expected_entry_count += 2;
});
const entries = await listenForPerformanceEntries(expected_entry_count);
// We will check that the non-timestamp values of the entry match for all
// entries.
const keys = [
'entryType',
'nextHopProtocol',
'transferSize',
'encodedBodySize',
'decodedBodySize',
];
const first = entries[0];
entries.slice(1).forEach(entry => {
keys.forEach(attribute => {
assert_equals(entry[attribute], first[attribute],
`There must be no discernible difference for the ${attribute} ` +
`attribute but found a difference for the ${entry.name} resource.`);
})});
}, "Make sure cross origin resource fetch failures with different status codes are indistinguishable");
</script>
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