iframe-coep-disallow.h2.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /loading/early-hints/iframe-coep-disallow.h2.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

<meta charset="utf-8">

<script src="/common/utils.js"></script>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="resources/early-hints-helpers.sub.js"></script>

</head>

<body>

<script>

promise_test(async (t) => {

    const iframe = document.createElement("iframe");

    const resource_url = CROSS_ORIGIN_RESOURCES_URL + "/empty.js?" + token();

    const params = new URLSearchParams();

    params.set("resource-url", resource_url);

    params.set("token", token());

    const iframe_url = CROSS_ORIGIN_RESOURCES_URL + "/html-with-early-hints.h2.py?" + params.toString();

    iframe.src = iframe_url;

    document.body.appendChild(iframe);

    // Make sure the iframe didn't load. See https://github.com/whatwg/html/issues/125 for why a

    // timeout is used here. Long term all network error handling should be similar and have a

    // reliable event.

    assert_equals(iframe.contentDocument.body.localName, "body");

    await t.step_wait(() => iframe.contentDocument === null);

    // Fetch the hinted resource and make sure it's not preloaded.

    await fetchScript(resource_url);

    const entries = performance.getEntriesByName(resource_url);

    assert_equals(entries.length, 1);

    assert_not_equals(entries[0].transferSize, 0);

}, "Early hints for an iframe that violates Cross-Origin-Embedder-Policy should be ignored.");

</script>

</body>