localstorage-basic-partitioned.tentative.sub.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:
- /webstorage/localstorage-basic-partitioned.tentative.sub.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>localStorage: partitioned storage test</title>

<meta name=help href="https://privacycg.github.io/storage-partitioning/">

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

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

<iframe id="shared-iframe" src="http://{{host}}:{{ports[http][0]}}/webstorage/resources/localstorage-about-blank-partitioned-iframe.html"></iframe>

<body>

<script>

// Here's the set-up for this test:

// Step 1. (window) set up listeners for main window.

// Step 2. (window) set up load listener for same-site iframe.

// Step 3. (same-site iframe) loads, send it a message to createOrGet a "userID".

// Step 4. (same-site iframe) receives the message, creates the "userID".

// Step 5. (window) receives "storage got set" message from same-site iframe.

// Step 6. (window) opens cross-site window w/ shared (same-site to us currently) iframe.

// Step 7. (cross-site iframe) loads, sends back the userID key from the iframe.

// Step 8. (window) asserts that the IDs should be different, as they should have a different StorageKey.

const altOrigin = "http://{{hosts[alt][]}}:{{ports[http][0]}}";

async_test(t => {

  let crossSiteWindow;

  let crossSiteID;

  let sameSiteID;

  const iframe = document.getElementById("shared-iframe");

  iframe.addEventListener("load", t.step_func(e => {

    const payload = {

      command: "create ID",

      key: "userID",

};

    iframe.contentWindow.postMessage(payload, iframe.origin);

  }), {once: true});

  window.addEventListener("message", t.step_func(e => {

    if (e.data.message === "ID created") {

      sameSiteID = e.data.userID;

      assert_true(typeof sameSiteID === "string");

      if (location.origin !== altOrigin) {

        crossSiteWindow = window.open(`${altOrigin}/webstorage/localstorage-basic-partitioned.tentative.sub.html`, "", "noopener=false");

        t.add_cleanup(() => crossSiteWindow.close());

    if (e.data.message === "cross-site window iframe loaded") {

      crossSiteID = e.data.userID;

      t.step(() => {

        assert_true(typeof crossSiteID === "string");

        assert_true(sameSiteID !== crossSiteID, "IDs pulled from two partitioned iframes are different.")

});

      // clean up after ourselves.

      iframe.contentWindow.localStorage.clear();

      crossSiteWindow.postMessage({command: "clearStorage"}, altOrigin);

      t.done();

};

  }));

}, "Simple test for partitioned localStorage");

</script>

</body>