1 files changed, 66 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_menubar_visibility.js b/browser/components/customizableui/test/browser_menubar_visibility.js
new file mode 100644
index 0000000000..82f2959905
--- /dev/null
+++ b/browser/components/customizableui/test/browser_menubar_visibility.js
@@ -0,0 +1,66 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check that menubar visibility is propagated correctly to new windows.
+ */
+add_task(async function test_menubar_visbility() {
+  let menubar = document.getElementById("toolbar-menubar");
+  is(menubar.getAttribute("autohide"), "true", "Menubar should be autohiding");
+  registerCleanupFunction(() => {
+    Services.xulStore.removeValue(
+      AppConstants.BROWSER_CHROME_URL,
+      menubar.id,
+      "autohide"
+    );
+    menubar.setAttribute("autohide", "true");
+  });
+
+  let contextMenu = document.getElementById("toolbar-context-menu");
+  let shownPromise = popupShown(contextMenu);
+  EventUtils.synthesizeMouse(
+    document.getElementById("stop-reload-button"),
+    2,
+    2,
+    {
+      type: "contextmenu",
+      button: 2,
+    }
+  );
+  await shownPromise;
+  let attrChanged = BrowserTestUtils.waitForAttribute(
+    "autohide",
+    menubar,
+    "false"
+  );
+  EventUtils.synthesizeMouseAtCenter(
+    document.getElementById("toggle_toolbar-menubar"),
+    {}
+  );
+  await attrChanged;
+  contextMenu.hidePopup(); // to be safe.
+
+  is(
+    menubar.getAttribute("autohide"),
+    "false",
+    "Menubar should now be permanently visible."
+  );
+  let persistedValue = Services.xulStore.getValue(
+    AppConstants.BROWSER_CHROME_URL,
+    menubar.id,
+    "autohide"
+  );
+  is(persistedValue, "false", "New value should be persisted");
+
+  let win = await BrowserTestUtils.openNewBrowserWindow();
+
+  is(
+    win.document.getElementById("toolbar-menubar").getAttribute("autohide"),
+    "false",
+    "Menubar should also be permanently visible in the new window."
+  );
+
+  await BrowserTestUtils.closeWindow(win);
+});