clean MArs rover from unneeded field

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

@@ -64,4 +64,7 @@ public class MarsMap {
     private void decrementLongitude() {
     }
 
+    public Coordinates getCurrentPosition() {
+        return currentPosition;
+    }
 }

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

@@ -2,30 +2,27 @@ package cat.hack3.codingtests.marsrover;
 
 public class MarsRover {
     private final MarsMap marsMap;
-    private Coordinates currentCoordinates;
     private Direction currentDirection;
 
-    public MarsRover(MarsMap marsMap, Coordinates startingCoordinates, Direction startingDirection) {
+    public MarsRover(MarsMap marsMap, Direction startingDirection) {
         this.marsMap = marsMap;
-        currentCoordinates = startingCoordinates;
         currentDirection = startingDirection;
     }
 
     public Coordinates moveForward() {
-        return currentCoordinates = marsMap.updatePositionTowards(currentDirection);
+        return marsMap.updatePositionTowards(currentDirection);
     }
 
     public Coordinates moveBackwards() {
-        return currentCoordinates = marsMap.updatePositionTowards(currentDirection.reversed());
+        return marsMap.updatePositionTowards(currentDirection.reversed());
     }
 
     public Direction turnLeft() {
-        currentDirection = currentDirection.changeDirectionToLeft();
-        return currentDirection;
+        return currentDirection = currentDirection.changeDirectionToLeft();
     }
 
     public Coordinates getCurrentCoordinates() {
-        return currentCoordinates;
+        return marsMap.getCurrentPosition();
     }
 
     public Direction getCurrentDirection() {

src/test/java/cat/hack3/codingtests/marsrover/MarsRoverTest.java

@@ -21,7 +21,7 @@ public class MarsRoverTest {
         int longitudeStartingPoint = 3;
         var startingCoordinates = Coordinates.of(latitudeStartingPoint, longitudeStartingPoint);
         var marsMap = new MarsMap(mapWidth, mapHeight, startingCoordinates);
-        rover = new MarsRover(marsMap, startingCoordinates, SOUTH);
+        rover = new MarsRover(marsMap, SOUTH);
     }
 
     @Test