local-storage-initial-empty-document.tentative.https.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:
- /html/anonymous-iframe/local-storage-initial-empty-document.tentative.https.window.html - WPT Dashboard Interop Dashboard

// META: script=/common/get-host-info.sub.js

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

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

// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js

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

// This test verifies the behavior of the initial empty document nested inside

// credentialless iframes.

//

// The following tree of frames and documents is used:

//  A

//  ├──B (credentialless)

//  │  └──D (initial empty document)

//  └──C (control)

//     └──E (initial empty document)

//

// Storage used for D and E must be different.

promise_test(async test => {

  const iframe_B = newIframeCredentialless(origin);

  const iframe_C = newIframe(origin);

  // Create iframe_D and store a value in localStorage.

  const key_D = token();

  const value_D = "value_D";

  const queue_B = token();

  send(iframe_B, `

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

    document.body.appendChild(iframe_D);

    iframe_D.contentWindow.localStorage.setItem("${key_D}","${value_D}");

    send("${queue_B}", "Done");

`);

  // Create iframe_E and store a value in localStorage.

  const key_E = token();

  const value_E = "value_E";

  const queue_C = token();

  send(iframe_C, `

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

    document.body.appendChild(iframe_E);

    iframe_E.contentWindow.localStorage.setItem("${key_E}","${value_E}");

    send("${queue_C}", "Done");

`);

  assert_equals(await receive(queue_B), "Done");

  assert_equals(await receive(queue_C), "Done");

  // Try to load both values from both contexts:

  send(iframe_B, `

    const iframe_D = document.querySelector("iframe");

    const value_D = iframe_D.contentWindow.localStorage.getItem("${key_D}");

    const value_E = iframe_D.contentWindow.localStorage.getItem("${key_E}");

    send("${queue_B}", value_D);

    send("${queue_B}", value_E);

`);

  send(iframe_C, `

    const iframe_E = document.querySelector("iframe");

    const value_D = iframe_E.contentWindow.localStorage.getItem("${key_D}");

    const value_E = iframe_E.contentWindow.localStorage.getItem("${key_E}");

    send("${queue_C}", value_D);

    send("${queue_C}", value_E);

`);

  // Verify the credentialless iframe and the normal one do not have access to

  // each other.

  assert_equals(await receive(queue_B), value_D, // key_D

    "Credentialless iframe can access credentialless context");

  assert_equals(await receive(queue_B), "",      // key_E

    "Credentialless iframe can't access credentialled context");

  assert_equals(await receive(queue_C), "",      // key_D

    "Credentialled iframe can't access credentialless context");

  assert_equals(await receive(queue_C), value_E, // key_E

    "Credentialled iframe can access credentialled context");

}, "Local storage is correctly partitioned with regards to credentialless " +

   "iframe in initial empty documents.");