Updated data sets for new unit tests cases

Author: creocoder

tests/data/test-make-root-new.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <dataset>
     <tree id="1" lft="1" rgt="2" depth="0" name="Root"/>
-    <multiple_roots_tree id="1" tree="1" lft="1" rgt="2" depth="0" name="Root"/>
+    <multiple_roots_tree id="1" tree="1" lft="1" rgt="2" depth="0" name="Root 1"/>
+    <multiple_roots_tree id="2" tree="2" lft="1" rgt="2" depth="0" name="Root 2"/>
 </dataset>