Increase code coverage

Signed-off-by: Thomas ADAM <[email protected]>

single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/layout/pathfinding/Grid.java

@@ -7,7 +7,6 @@
  */
 package com.powsybl.sld.layout.pathfinding;
 
-import java.io.*;
 import java.util.*;
 
 /**
@@ -16,7 +15,7 @@
 public class Grid {
 
     static class Node {
-        private Point point;
+        private final Point point;
         private int cost;
         private int distance;
         private Node parent;
@@ -29,9 +28,7 @@ public Node(Point p, int cost, int distance) {
         }
 
         public Node(int x, int y, int cost, int distance) {
-            this.point = new Point(x, y);
-            this.cost = cost;
-            this.distance = distance;
+            this(new Point(x, y), cost, distance);
         }
 
         public Point getPoint() {
@@ -50,21 +47,6 @@ public Node getParent() {
             return parent;
         }
 
-        public Node setCost(int cost) {
-            this.cost = cost;
-            return this;
-        }
-
-        public Node setDistance(int distance) {
-            this.distance = distance;
-            return this;
-        }
-
-        public Node setParent(Node parent) {
-            this.parent = parent;
-            return this;
-        }
-
         @Override
         public boolean equals(Object o) {
             if (this == o) {
@@ -103,14 +85,6 @@ public Grid(int width, int height) {
         }
     }
 
-    public int getHeight() {
-        return height;
-    }
-
-    public int getWidth() {
-        return width;
-    }
-
     public void updateNode(Point point, int cost, int distance, Node parent) {
         Node node = getNode(point);
         node.cost = cost;

single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/layout/pathfinding/Point.java

@@ -30,16 +30,6 @@ public int y() {
         return y;
     }
 
-    public Point setX(int x) {
-        this.x = x;
-        return this;
-    }
-
-    public Point setY(int y) {
-        this.y = y;
-        return this;
-    }
-
     public int manhattanDistance(Point other) {
         return Math.abs(this.x - other.x) + Math.abs(this.y - other.y);
     }

single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/layout/zonebygrid/MatrixCell.java

@@ -13,8 +13,4 @@
  * @author Thomas Adam <tadam at neverhack.com>
  */
 public record MatrixCell(BaseGraph graph, int col, int row) {
-
-    public String getId() {
-        return graph.getId();
-    }
 }