1 files changed, 28 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_969661_character_encoding_navbar_disabled.js b/browser/components/customizableui/test/browser_969661_character_encoding_navbar_disabled.js
new file mode 100644
index 0000000000..71e83274c2
--- /dev/null
+++ b/browser/components/customizableui/test/browser_969661_character_encoding_navbar_disabled.js
@@ -0,0 +1,28 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Adding the character encoding menu to the panel, exiting customize mode,
+// and moving it to the nav-bar should have it disabled if the page in the
+// content area isn't eligible to have its encoding overridden.
+add_task(async function () {
+  await startCustomizing();
+  CustomizableUI.addWidgetToArea(
+    "characterencoding-button",
+    CustomizableUI.AREA_FIXED_OVERFLOW_PANEL
+  );
+  await endCustomizing();
+  await document.getElementById("nav-bar").overflowable.show();
+  let panelHiddenPromise = promiseOverflowHidden(window);
+  PanelUI.overflowPanel.hidePopup();
+  await panelHiddenPromise;
+  CustomizableUI.addWidgetToArea("characterencoding-button", "nav-bar");
+  let button = document.getElementById("characterencoding-button");
+  ok(button.hasAttribute("disabled"), "Button should be disabled");
+});
+
+add_task(function asyncCleanup() {
+  resetCustomization();
+});