webstorage/localstorage-basic-partitioned.tentative.sub.html

<!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>