promise-access-control-allow.html | Explore in Territory

<!DOCTYPE html>
<meta charset="utf-8">
<p>Tests that promise rejection events are received for cross origin CORS scripts</p>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

addEventListener('unhandledrejection', async exception => {
    // Ordering in between:
    // 1. dispatching the console.error
    // 2. dispatching 'unhandledrejection'
    // is not guaranteed.
    //
    // This caused this test to be flaky. See https://crbug.com/1185119
    //
    // (1) is not observable from here, but part of the expectations. The only
    // ways to ensure it will happen consistently before (2) is to use
    // setTimeout, unfortunately.
    await new Promise(resolve => setTimeout(resolve, 250));
    console.log('PASS: received unhandledrejection event');

    if (exception.reason == 42)
        console.log('PASS: received expected reason');
    else
        console.log('FAIL: received unexpected reason: ' + e.reason);
    if (window.testRunner)
        testRunner.notifyDone();
});
</script>
<script src='http://localhost:8000/security/resources/promise-access-control.php?allow=true' crossorigin='anonymous'></script>

chromium/third_party/blink/web_tests/http/tests/security/promise-access-control-allow.html