Bug 1663192 - Part 1: Add a test to ensure the top-level window in a file url is considered as top-level. r=dimi

Differential Revision: https://phabricator.services.mozilla.com/D91001
2020-09-24 09:12:48 +00:00 · 2020-09-24 09:12:48 +00:00 · 85ee48719b
--- a/toolkit/components/antitracking/test/browser/browser.ini
+++ b/toolkit/components/antitracking/test/browser/browser.ini
@ -36,6 +36,7 @@ support-files =
  empty-altsvc.js
  empty-altsvc.js^headers^
  empty.html
+  file_localStorage.html
  popup.html
  redirect.sjs
  server.sjs
@ -73,6 +74,7 @@ skip-if = os == "linux" && debug #bug 1627094
 [browser_blockingNoOpener.js]
 [browser_doublyNestedTracker.js]
 [browser_existingCookiesForSubresources.js]
+[browser_fileUrl.js]
 [browser_firstPartyCookieRejectionHonoursAllowList.js]
 [browser_hasStorageAccess.js]
 [browser_imageCache4.js]
--- a/toolkit/components/antitracking/test/browser/browser_fileUrl.js
+++ b/toolkit/components/antitracking/test/browser/browser_fileUrl.js
@ -0,0 +1,38 @@
+/**
+ * Bug 1663192 - Testing for ensuring the top-level window in a fire url is
+ *               treated as first-party.
+ */
+
+"use strict";
+
+add_task(async function setup() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["network.cookie.cookieBehavior", 1]],
+  });
+});
+
+add_task(async function() {
+  let dir = getChromeDir(getResolvedURI(gTestPath));
+  dir.append("file_localStorage.html");
+  const uriString = Services.io.newFileURI(dir).spec;
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, uriString);
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [], function() {
+    let result = content.document.getElementById("result");
+
+    is(
+      result.textContent,
+      "PASS",
+      "The localStorage is accessible in top-level window"
+    );
+
+    let loadInfo = content.docShell.currentDocumentChannel.loadInfo;
+
+    ok(
+      !loadInfo.isThirdPartyContextToTopWindow,
+      "The top-level window shouldn't be third-party"
+    );
+  });
+
+  BrowserTestUtils.removeTab(tab);
+});
--- a/toolkit/components/antitracking/test/browser/file_localStorage.html
+++ b/toolkit/components/antitracking/test/browser/file_localStorage.html
@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Bug 1663192 - Accessing localStorage in a file urls</title>
+</head>
+<script>
+  window.addEventListener("DOMContentLoaded", () => {
+    let result = document.getElementById("result");
+
+    try {
+      window.localStorage.setItem("foo", "bar");
+      result.textContent = "PASS";
+    } catch (e) {
+      result.textContent = "FAIL";
+    }
+  }, { once: true });
+</script>
+<body>
+<a id="result"></a>
+</body>
+</html>