1 files changed, 46 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_877006_missing_view.js b/browser/components/customizableui/test/browser_877006_missing_view.js
new file mode 100644
index 0000000000..c01d2f7b35
--- /dev/null
+++ b/browser/components/customizableui/test/browser_877006_missing_view.js
@@ -0,0 +1,46 @@
+/* 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";
+
+// Should be able to add broken view widget
+add_task(function testAddbrokenViewWidget() {
+  const kWidgetId = "test-877006-broken-widget";
+  let widgetSpec = {
+    id: kWidgetId,
+    type: "view",
+    viewId: "idontexist",
+    /* Empty handler so we try to attach it maybe? */
+    onViewShowing() {},
+  };
+
+  let noError = true;
+  try {
+    CustomizableUI.createWidget(widgetSpec);
+    CustomizableUI.addWidgetToArea(kWidgetId, CustomizableUI.AREA_NAVBAR);
+  } catch (ex) {
+    console.error(ex);
+    noError = false;
+  }
+  ok(
+    noError,
+    "Should not throw an exception trying to add a broken view widget."
+  );
+
+  noError = true;
+  try {
+    CustomizableUI.destroyWidget(kWidgetId);
+  } catch (ex) {
+    console.error(ex);
+    noError = false;
+  }
+  ok(
+    noError,
+    "Should not throw an exception trying to remove the broken view widget."
+  );
+});
+
+add_task(async function asyncCleanup() {
+  await resetCustomization();
+});