log also the rotation

src/main/java/cat/hack3/codingtests/marsrover/MarsRover.java

@@ -1,6 +1,11 @@
 package cat.hack3.codingtests.marsrover;
 
+import java.util.logging.Logger;
+
 public class MarsRover {
+    Logger logger = Logger.getLogger(this.getClass().getName());
+    private enum Rotation {LEFT, RIGHT}
+
     private final MarsMap marsMap;
     private Direction currentDirection;
 
@@ -18,11 +23,20 @@ public class MarsRover {
     }
 
     public Direction turnLeft() {
-        return currentDirection = currentDirection.getNextDirectionRotatingToLeft();
+        currentDirection = currentDirection.getNextDirectionRotatingToLeft();
+        reportNewDirection(Rotation.LEFT);
+        return currentDirection;
     }
 
     public Direction turnRight() {
-        return currentDirection = currentDirection.getNextDirectionRotatingToRight();
+        currentDirection = currentDirection.getNextDirectionRotatingToRight();
+        reportNewDirection(Rotation.RIGHT);
+        return currentDirection;
+    }
+
+    private void reportNewDirection(Rotation rotation) {
+        logger.info(String.format("Rotated towards %s, now the direction is %s",
+                rotation, currentDirection));
     }
 
     public Coordinates getCurrentCoordinates() {