1 files changed, 34 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_reset_dom_events.js b/browser/components/customizableui/test/browser_reset_dom_events.js
new file mode 100644
index 0000000000..2922fe481d
--- /dev/null
+++ b/browser/components/customizableui/test/browser_reset_dom_events.js
@@ -0,0 +1,34 @@
+"use strict";
+
+const widgetId = "import-button";
+const listener = {
+  _beforeCount: 0,
+  _afterCount: 0,
+  onWidgetBeforeDOMChange(node) {
+    if (node.id == widgetId) {
+      this._beforeCount++;
+    }
+  },
+  onWidgetAfterDOMChange(node) {
+    if (node.id == widgetId) {
+      this._afterCount++;
+    }
+  },
+};
+
+add_task(async function test_reset_dom_events() {
+  await startCustomizing();
+
+  CustomizableUI.addWidgetToArea(widgetId, CustomizableUI.AREA_BOOKMARKS);
+  CustomizableUI.addListener(listener);
+
+  info("Resetting");
+  await gCustomizeMode.reset();
+
+  is(listener._beforeCount, 1, "Should've been notified of the mutation");
+  is(listener._afterCount, 1, "Should've been notified of the mutation");
+
+  CustomizableUI.removeListener(listener);
+
+  await endCustomizing();
+});