use static initialiser for errors hashmap

Author: anisometropie

core/src/main/java/fr/sncf/osrd/api/pathfinding/PathfindingRoutesEndpoint.java

@@ -40,13 +40,16 @@ public class PathfindingRoutesEndpoint implements Take {
     public static final String PATH_FINDING_ELECTRIFICATION_ERROR =
             "No path could be found after loading Electrification constraints";
 
+    static {
+        constraints.put(LoadingGaugeConstraints.class, PATH_FINDING_GAUGE_ERROR);
+        constraints.put(ElectrificationConstraints.class, PATH_FINDING_ELECTRIFICATION_ERROR);
+    }
+
     /**
      * constructor
      */
     public PathfindingRoutesEndpoint(InfraManager infraHandler) {
         this.infraManager = infraHandler;
-        constraints.put(LoadingGaugeConstraints.class, PATH_FINDING_GAUGE_ERROR);
-        constraints.put(ElectrificationConstraints.class, PATH_FINDING_ELECTRIFICATION_ERROR);
     }
 
     @Override
@@ -90,7 +93,7 @@ public static Pathfinding.Result<SignalingRoute> runPathfinding(
             SignalingInfra infra,
             PathfindingWaypoint[][] reqWaypoints,
             Collection<RollingStock> rollingStocks
-    )  throws NoPathFoundError {
+    ) throws NoPathFoundError {
         // parse the waypoints
         var waypoints = new ArrayList<Collection<Pathfinding.EdgeLocation<SignalingRoute>>>();
         for (var step : reqWaypoints) {
@@ -138,14 +141,14 @@ private static Pathfinding.Result<SignalingRoute> computePaths(
         // check there is no path without adding constraints
         var possiblePathWithoutErrorNoConstraints =
                 new Pathfinding<>(new GraphAdapter<>(infra.getSignalingRouteGraph()))
-                .setEdgeToLength(route -> route.getInfraRoute().getLength())
-                .setRemainingDistanceEstimator(remainingDistanceEstimator)
-                .runPathfinding(waypoints);
+                    .setEdgeToLength(route -> route.getInfraRoute().getLength())
+                    .setRemainingDistanceEstimator(remainingDistanceEstimator)
+                    .runPathfinding(waypoints);
         if (possiblePathWithoutErrorNoConstraints == null) {
             throw new NoPathFoundError(PATH_FINDING_GENERIC_ERROR);
         }
         // handling errors
-        for (EdgeToRanges<SignalingRoute> currentConstraint: constraintsList) {
+        for (EdgeToRanges<SignalingRoute> currentConstraint : constraintsList) {
             var possiblePathWithoutError = new Pathfinding<>(new GraphAdapter<>(infra.getSignalingRouteGraph()))
                     .setEdgeToLength(route -> route.getInfraRoute().getLength())
                     .addBlockedRangeOnEdges(currentConstraint)