1 files changed, 44 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_background_private_browsing.js b/toolkit/components/extensions/test/xpcshell/test_ext_background_private_browsing.js
new file mode 100644
index 0000000000..9ce80f3fda
--- /dev/null
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_background_private_browsing.js
@@ -0,0 +1,44 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+add_task(async function test_background_incognito() {
+  info(
+    "Test background page incognito value with permanent private browsing enabled"
+  );
+
+  Services.prefs.setBoolPref("browser.privatebrowsing.autostart", true);
+  registerCleanupFunction(() => {
+    Services.prefs.clearUserPref("browser.privatebrowsing.autostart");
+  });
+
+  let extension = ExtensionTestUtils.loadExtension({
+    incognitoOverride: "spanning",
+    async background() {
+      browser.test.assertEq(
+        window,
+        browser.extension.getBackgroundPage(),
+        "Caller should be able to access itself as a background page"
+      );
+      browser.test.assertEq(
+        window,
+        await browser.runtime.getBackgroundPage(),
+        "Caller should be able to access itself as a background page"
+      );
+
+      browser.test.assertEq(
+        browser.extension.inIncognitoContext,
+        true,
+        "inIncognitoContext is true for permanent private browsing"
+      );
+
+      browser.test.notifyPass("incognito");
+    },
+  });
+
+  await extension.startup();
+
+  await extension.awaitFinish("incognito");
+
+  await extension.unload();
+});