1 files changed, 44 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/browser_aboutblank.js b/toolkit/components/antitracking/test/browser/browser_aboutblank.js
new file mode 100644
index 0000000000..f80a948771
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/browser_aboutblank.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function test_aboutblankInIframe() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      [
+        "network.cookie.cookieBehavior",
+        BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN,
+      ],
+      [
+        "network.cookie.cookieBehavior.pbmode",
+        BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN,
+      ],
+    ],
+  });
+
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    TEST_TOP_PAGE
+  );
+  let browser = tab.linkedBrowser;
+
+  await SpecialPowers.spawn(browser, [], async function (obj) {
+    let ifr = content.document.createElement("iframe");
+    let loading = new content.Promise(resolve => {
+      ifr.onload = resolve;
+    });
+    ifr.src = "about:blank";
+    content.document.body.appendChild(ifr);
+    await loading;
+
+    await SpecialPowers.spawn(ifr, [], async function (obj) {
+      ok(
+        content.navigator.cookieEnabled,
+        "Cookie should be enabled in about blank"
+      );
+    });
+  });
+
+  BrowserTestUtils.removeTab(tab);
+});