diff -r 000000000000 -r 6474c204b198 browser/components/customizableui/test/browser_877006_missing_view.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/customizableui/test/browser_877006_missing_view.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+/* 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: function() {
+    }
+  };
+
+  let noError = true;
+  try {
+    CustomizableUI.createWidget(widgetSpec);
+    CustomizableUI.addWidgetToArea(kWidgetId, CustomizableUI.AREA_NAVBAR);
+  } catch (ex) {
+    Cu.reportError(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) {
+    Cu.reportError(ex);
+    noError = false;
+  }
+  ok(noError, "Should not throw an exception trying to remove the broken view widget.");
+});
+
+add_task(function asyncCleanup() {
+  yield resetCustomization();
+});