add getRoadOwner method

src/main/java/it/unibo/controller/board/BoardController.java

@@ -83,4 +83,10 @@ public interface BoardController {
      * @return the name of the owner of the property at the given position
      */
     Optional<String> getPropertyOwner(PropertyPosition position);
+
+    /**
+     * @param position the position of the road
+     * @return the owner of the road at the given position
+     */
+    Optional<String> getRoadOwner(RoadPosition position);
 }

src/main/java/it/unibo/controller/board/BoardControllerImpl.java

@@ -100,4 +100,9 @@ public void setRobberPosition(final TilePosition coordinates) {
     public Optional<String> getPropertyOwner(PropertyPosition position) {
         return this.propertyManager.getPropertyOwner(position).map(Player::getName);
     }
+
+    @Override
+    public Optional<String> getRoadOwner(RoadPosition position) {
+        return this.roadManager.getRoadOwner(position).map(Player::getName);
+    }
 }

src/main/java/it/unibo/model/road/RoadManager.java

@@ -46,4 +46,10 @@ public interface RoadManager {
      */
     Optional<Player> getLongestRoadOwner();
 
+    /**
+     * @param position the position of the road
+     * @return the owner of the road at the given position
+     */
+    Optional<Player> getRoadOwner(RoadPosition position);
+
 }

src/main/java/it/unibo/model/road/RoadManagerImpl.java

@@ -104,4 +104,9 @@ && getLongestRoadLength(player) > getLongestRoadLength(longestRoadOwner.get())))
         }
     }
 
+    @Override
+    public Optional<Player> getRoadOwner(RoadPosition position) {
+        return roads.stream().filter(r -> r.getPosition().equals(position)).findFirst().map(r -> r.getOwner());
+    }
+
 }