iframe-x-frame-options-deny.h2.window.js

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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-x-frame-options-deny.h2.window.html - WPT Dashboard Interop Dashboard

// META: script=/common/utils.js

// META: script=resources/early-hints-helpers.sub.js

promise_test(async (t) => {

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

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

    const params = new URLSearchParams();

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

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

    params.set("x-frame-options", "DENY");

    const iframe_url = SAME_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 X-Frame-Options should be ignored.");