1 files changed, 17 insertions, 0 deletions
diff --git a/comm/mail/components/extensions/test/browser/browser_ext_browserAction_not_customized.js b/comm/mail/components/extensions/test/browser/browser_ext_browserAction_not_customized.js
new file mode 100644
index 0000000000..755e950a84
--- /dev/null
+++ b/comm/mail/components/extensions/test/browser/browser_ext_browserAction_not_customized.js
@@ -0,0 +1,17 @@
+/* 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/. */
+
+add_setup(async () => {
+  Assert.equal(
+    0,
+    Object.keys(getState()).length,
+    "Unified toolbar should not be customized"
+  );
+});
+
+// Load browserAction tests.
+Services.scriptloader.loadSubScript(
+  new URL("test_browserAction.js", gTestPath).href,
+  this
+);