diff -r 000000000000 -r 6474c204b198 browser/base/content/test/newtab/browser_newtab_bug723102.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/newtab/browser_newtab_bug723102.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function runTests() {
+  // create a new tab page and hide it.
+  yield setLinks("0,1,2,3,4,5,6,7,8");
+  setPinnedLinks("");
+
+  yield addNewTabPageTab();
+  let firstTab = gBrowser.selectedTab;
+
+  yield addNewTabPageTab();
+  gBrowser.removeTab(firstTab);
+
+  ok(NewTabUtils.allPages.enabled, "page is enabled");
+  NewTabUtils.allPages.enabled = false;
+  ok(getGrid().node.hasAttribute("page-disabled"), "page is disabled");
+  NewTabUtils.allPages.enabled = true;
+}