diff -r 000000000000 -r 6474c204b198 toolkit/components/places/tests/bookmarks/test_protectRoots.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/places/tests/bookmarks/test_protectRoots.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test()
+{
+  const ROOTS = [
+    PlacesUtils.bookmarksMenuFolderId,
+    PlacesUtils.toolbarFolderId,
+    PlacesUtils.unfiledBookmarksFolderId,
+    PlacesUtils.tagsFolderId,
+    PlacesUtils.placesRootId
+  ];
+
+  for (let root of ROOTS) {
+    do_check_true(PlacesUtils.isRootItem(root));
+
+    try {
+      PlacesUtils.bookmarks.removeItem(root);
+      do_throw("Trying to remove a root should throw");
+    } catch (ex) {}
+
+    try {
+      PlacesUtils.bookmarks.moveItem(root, PlacesUtils.placesRootId, 0);
+      do_throw("Trying to move a root should throw");
+    } catch (ex) {}
+
+    try {
+      PlacesUtils.bookmarks.removeFolderChildren(root);
+      if (root == PlacesUtils.placesRootId)
+        do_throw("Trying to remove children of the main root should throw");
+    } catch (ex) {
+      if (root != PlacesUtils.placesRootId)
+        do_throw("Trying to remove children of other roots should not throw");
+    }
+  }
+}