sandbox-allow-same-site-none-cookies-value.tentative.https.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:
- /cookies/samesite/sandbox-allow-same-site-none-cookies-value.tentative.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<head>

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

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

  <script src="/cookies/resources/cookie-helper.sub.js"></script>

  <script src="/common/get-host-info.sub.js"></script>

</head>

<body onload="doTests()">

  <script>

    function doTests() {

      promise_test(async function (t) {

        const value = String(Math.random());

        await resetSameSiteCookies(SECURE_ORIGIN, value);

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

        child.src = SECURE_ORIGIN + "/cookies/samesite/resources/iframe-subresource-report.html";

        child.sandbox = "allow-scripts allow-same-site-none-cookies";

        document.body.appendChild(child);

        const e = await wait_for_message("COOKIES");

        assert_cookie(SECURE_ORIGIN, e.data, "samesite_lax", value, false);

        assert_cookie(SECURE_ORIGIN, e.data, "samesite_strict", value, false);

        assert_cookie(SECURE_ORIGIN, e.data, "samesite_none", value, true);

      }, "SameSite=None cookies should be allowed in the iframe by the `allow-same-site-none-cookies` value");

      promise_test(async function (t) {

        await resetSameSiteCookies(SECURE_ORIGIN, Math.random());

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

        iframeB.src = SECURE_CROSS_SITE_ORIGIN + "/cookies/samesite/resources/cross-site-frame-with-sandboxed-embed.html";

        document.body.appendChild(iframeB);

        await fetch_tests_from_window(iframeB.contentWindow);

      }, "SameSite=None cookies are not present in a frame with a cross-site ancestor (A->B->A)");

  </script>

</body>