BS-6749: add more logs

tests/org.bonitasoft.studio.util.tests/src/org/bonitasoft/studio/util/test/conditions/SelectNodeUnder.java

@@ -33,7 +33,9 @@ public class SelectNodeUnder implements ICondition {
     public boolean test() throws Exception {
         System.out.println("SelectNodeUnder.test" + parentNode + " --> " + subNodeLabel);
         bot.tree().unselect();
-        bot.tree().select(parentNode).expandNode(parentNode).select(subNodeLabel);
+        final SWTBotTreeItem expandedNode = bot.tree().select(parentNode).expandNode(parentNode);
+        System.out.println("Available nodes under expanded one" + parentNode + ": " + expandedNode.getNodes());
+        expandedNode.select(subNodeLabel);
         return bot.tree().selectionCount() > 0;
     }