Fix Region with null testblock

BauSystem_Main/src/de/steamwar/bausystem/commands/CommandTestblock.java

@@ -47,6 +47,10 @@ public class CommandTestblock implements CommandExecutor {
 
         for(Region region : Region.getRegions()){
             if(region.inRegion(player.getLocation())){
+                if (!region.hasTestblock()) {
+                    player.sendMessage(BauSystem.PREFIX + "§cRegion ohne Testblock");
+                    return false;
+                }
                 try {
                     Schematic schem = null;
                     if(args.length > 0){

BauSystem_Main/src/de/steamwar/bausystem/world/Region.java

@@ -88,6 +88,10 @@ public class Region {
         prototype.reset(this, schem);
     }
 
+    public boolean hasTestblock() {
+        return prototype.hasTestblock();
+    }
+
     public void resetTestblock(Schematic schem) throws IOException, NoClipboardException{
         prototype.resetTestblock(this, schem);
     }
@@ -181,6 +185,10 @@ public class Region {
                 paste(schem.load(), x, y, z, rotate);
         }
 
+        public boolean hasTestblock() {
+            return testblock != null;
+        }
+
         public void resetTestblock(Region region, Schematic schem) throws IOException, NoClipboardException {
             testblock.reset(region, schem);
         }