diff --git a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/AStarAlgorithm.java b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/AStarAlgorithm.java
index 45f73ed..2e7e1b9 100644
--- a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/AStarAlgorithm.java
+++ b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/AStarAlgorithm.java
@@ -19,26 +19,14 @@ public class AStarAlgorithm extends DijkstraAlgorithm {
     	}
     	
         if (data.getMode() == Mode.LENGTH) {
-        	MaxSpeed = 1;
+        	MaxSpeed = 1.01;
         } else {
         	MaxSpeed = MaxSpeed / 3.6;
         }
         
-        //double longueurArc = 0.0;
-        
         for (Node node: data.getGraph().getNodes()) {
         	double estimation = Point.distance(node.getPoint(), data.getDestination().getPoint())/MaxSpeed;
         	labels[node.getId()] = new LabelStar(node, estimation);
-        	/*if (node.getId() == 6800) {
-        		for (Arc arc: node.getSuccessors()) {
-        			if (arc.getDestination().getId() == 6299) {
-        				longueurArc = arc.getLength();
-        			}
-        		}
-        	}*/
         }
-        
-        //System.out.println("La distance entre les nodes " + data.getGraph().getNodes().get(6800).getId() + " et " + data.getGraph().getNodes().get(6299).getId() + " est : " + Point.distance(data.getGraph().getNodes().get(6800).getPoint(), data.getGraph().getNodes().get(6299).getPoint()) + " et la longeur de l'arc est : " + longueurArc);
-        
     }
 }
diff --git a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/DijkstraAlgorithm.java b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/DijkstraAlgorithm.java
index ec59011..0293f0d 100644
--- a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/DijkstraAlgorithm.java
+++ b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/DijkstraAlgorithm.java
@@ -55,10 +55,9 @@ public class DijkstraAlgorithm extends ShortestPathAlgorithm {
             	notifyNodeMarked(current.getSommetCourant());
             	
             	// POUR LE TEST SUR LES COUTS CROISSANTS
-            	//System.out.println("Test sur le coût : " + labels[currentID].getTotalCost());
             	if (labels[currentID].compareTo(labels[ancienID]) == -1) {
-    	        	System.out.println("Erreur : Couts non croissants : noeud" + ancienID + " contre " + currentID);
-    	    	}
+    	        	System.out.println("Erreur : Couts non croissants : noeud " + ancienID + " (" + labels[ancienID].getTotalCost() + "; " + labels[ancienID].getEstimation() + ") contre " + currentID + " (" + labels[currentID].getTotalCost() + "; " + labels[currentID].getEstimation() + ") ");
+            	}
             	ancienID = currentID;
             	
             	//nbNonMarque--;
@@ -93,8 +92,7 @@ public class DijkstraAlgorithm extends ShortestPathAlgorithm {
             	if (compteur_successeurs != labels[currentID].getSommetCourant().getNumberOfSuccessors()) {
             		System.out.println("ERREUR Nombre de successeurs visités : " + compteur_successeurs + "/" + labels[currentID].getSommetCourant().getNumberOfSuccessors());
             	}
-            	//System.out.println("Nombre de successeurs visités : " + compteur_successeurs + "/" + labels[currentID].getSommetCourant().getNumberOfSuccessors());
-        	}
+            }
         	catch (EmptyPriorityQueueException e) {
         		encore = false;
         	}
diff --git a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/Label.java b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/Label.java
index 78d70b4..b176f4c 100644
--- a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/Label.java
+++ b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/Label.java
@@ -51,16 +51,17 @@ public class Label implements Comparable<Label>{
 	}	
 	
 	public int compareTo(Label o) {
+		double epsilon = 0.0;
 		double diff = this.getTotalCost() - o.getTotalCost();
-		if (diff < 0.0) {
+		if (diff < -epsilon) {
 			return -1;
-		} else if (diff > 0.0) {
+		} else if (diff > epsilon) {
 			return 1;
 		} else {
 			diff = this.getEstimation() - o.getEstimation();
-			if (diff < 0.0) {
+			if (diff < -epsilon) {
 				return -1;
-			} else if (diff > 0.0) {
+			} else if (diff > epsilon) {
 				return 1;
 			} else {
 				return 0;
diff --git a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/LabelStar.java b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/LabelStar.java
index 541fb5c..e73edcd 100644
--- a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/LabelStar.java
+++ b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/shortestpath/LabelStar.java
@@ -17,6 +17,6 @@ public class LabelStar extends Label implements Comparable<Label>{
 	}
 	
 	public double getTotalCost() {
-		return this.estimation + this.getCost();
+		return this.estimation + super.getCost();
 	}
 }
\ No newline at end of file
diff --git a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java
index 4d2d5ea..4ad1cd6 100644
--- a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java
+++ b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java
@@ -175,14 +175,18 @@ public class BinaryHeap<E extends Comparable<E>> implements PriorityQueue<E> {
     
     public boolean IsValid() {
     	boolean valid = true;
-    	int last_element_a_check = (int)(Math.pow(2.0, Math.floor(Math.log(this.currentSize))) - 1);
-    	int i = 0;
-    	while (i < last_element_a_check && valid) {
-    		if ((this.array.get(i).compareTo(this.array.get(this.indexLeft(i))) == 1) || (this.array.get(i).compareTo(this.array.get(this.indexLeft(i) + 1))) == 1) {
-    			valid = false;
-    		} else {
-    			i++;
-    		}
+    	if (!this.isEmpty()) {
+	    	int last_element_a_check = (int)(Math.pow(2.0, Math.floor(Math.log(this.currentSize))) - 1);
+	    	int i = 0;
+	    	while (i < last_element_a_check && valid) {
+	    		if (this.indexLeft(i) < this.currentSize && (this.array.get(this.indexLeft(i)).compareTo(this.array.get(i)) == -1)) {
+	    			valid = false;
+	    		}
+	    		if (this.indexLeft(i)+1 < this.currentSize &&(this.array.get(this.indexLeft(i) + 1).compareTo(this.array.get(i)) == -1)) {
+	    			valid = false;
+	    		} 
+	    		i++;
+	    	}
     	}
     	return valid;
     }
diff --git a/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/OptimaliteTest.java b/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/OptimaliteTest.java
index 7385268..4592a38 100644
--- a/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/OptimaliteTest.java
+++ b/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/OptimaliteTest.java
@@ -157,26 +157,4 @@ public class OptimaliteTest {
         assertEquals(solutionBellmanFord.getPath().getLength(),solutionDijkstra.getPath().getLength(), OptimaliteTest.delta);
         assertEquals(solutionBellmanFord.getPath().getLength(),solutionAStar.getPath().getLength(), OptimaliteTest.delta);
     }
-    
-    @Test
-    public void testDijkstraPlusRapide() {
-    	// On ne fait le test qu'avec un filtre sur les chemins autorisés
-    	ShortestPathData data = new ShortestPathData(graph, graph.get(75870), graph.get(103867), ArcInspectorFactory.getAllFilters().get(0));
-    	ShortestPathAlgorithm dijkstra = new DijkstraAlgorithm(data);
-    	ShortestPathAlgorithm aStar = new AStarAlgorithm(data);
-    	ShortestPathSolution solutionAStar = aStar.run();
-    	ShortestPathSolution solutionDijkstra = dijkstra.run();
-        assertTrue(solutionDijkstra.getSolvingTime().compareTo(solutionAStar.getSolvingTime()) < 0);
-    }
-    
-    @Test
-    public void testAStarPlusRapide() {
-    	// On ne fait le test qu'avec un filtre sur les chemins autorisés
-    	ShortestPathData data = new ShortestPathData(graph, graph.get(12305), graph.get(103867), ArcInspectorFactory.getAllFilters().get(0));
-    	ShortestPathAlgorithm dijkstra = new DijkstraAlgorithm(data);
-    	ShortestPathAlgorithm aStar = new AStarAlgorithm(data);
-    	ShortestPathSolution solutionAStar = aStar.run();
-    	ShortestPathSolution solutionDijkstra = dijkstra.run();
-        assertTrue(solutionDijkstra.getSolvingTime().compareTo(solutionAStar.getSolvingTime()) > 0);
-    }
 }
diff --git a/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/PerformancesTest.java b/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/PerformancesTest.java
new file mode 100644
index 0000000..2a35ce2
--- /dev/null
+++ b/be-graphes-algos/src/test/java/org/insa/graphs/algorithm/shortestpath/PerformancesTest.java
@@ -0,0 +1,85 @@
+package org.insa.graphs.algorithm.shortestpath;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.BufferedInputStream;
+import java.io.DataInputStream;
+import java.io.FileInputStream;
+
+import org.insa.graphs.model.io.BinaryGraphReader;
+import org.insa.graphs.model.io.GraphReader;
+import org.insa.graphs.model.Graph;
+
+import org.insa.graphs.algorithm.shortestpath.DijkstraAlgorithm;
+import org.insa.graphs.algorithm.shortestpath.AStarAlgorithm;
+
+import org.insa.graphs.algorithm.ArcInspectorFactory;
+import org.insa.graphs.algorithm.shortestpath.ShortestPathData;
+
+public class PerformancesTest {
+
+    // Graph utilisé pour les tests
+    static Graph graph;
+    
+    //Lecture du graphe
+    @BeforeClass
+    public static void initAll() throws Exception {
+    	final String mapName = "/home/paulfaure/Documents/3A/JAVA/Cartes BE/haute-garonne/europe/france/haute-garonne.mapgr";
+
+        // Create a graph reader.
+        final GraphReader reader = new BinaryGraphReader(
+                new DataInputStream(new BufferedInputStream(new FileInputStream(mapName))));
+
+        // Read the graph.
+        PerformancesTest.graph = reader.read();
+
+        reader.close();
+    }
+    
+    @Test
+    public void testDijkstraPlusRapidePetitTrajet() {
+    	// On ne fait le test qu'avec un filtre sur les chemins autorisés
+    	ShortestPathData data = new ShortestPathData(graph, graph.get(87500), graph.get(103867), ArcInspectorFactory.getAllFilters().get(0));
+    	ShortestPathAlgorithm dijkstra = new DijkstraAlgorithm(data);
+    	ShortestPathAlgorithm aStar = new AStarAlgorithm(data);
+    	ShortestPathSolution solutionAStar = aStar.run();
+    	ShortestPathSolution solutionDijkstra = dijkstra.run();
+        assertTrue(solutionDijkstra.getSolvingTime().compareTo(solutionAStar.getSolvingTime()) < 0);
+    }
+    
+    @Test
+    public void testDijkstraPlusRapideCheminNul() {
+    	// On ne fait le test qu'avec un filtre sur les chemins autorisés
+    	ShortestPathData data = new ShortestPathData(graph, graph.get(103867), graph.get(103867), ArcInspectorFactory.getAllFilters().get(0));
+    	ShortestPathAlgorithm dijkstra = new DijkstraAlgorithm(data);
+    	ShortestPathAlgorithm aStar = new AStarAlgorithm(data);
+    	ShortestPathSolution solutionAStar = aStar.run();
+    	ShortestPathSolution solutionDijkstra = dijkstra.run();
+        assertTrue(solutionDijkstra.getSolvingTime().compareTo(solutionAStar.getSolvingTime()) < 0);
+    }
+    
+    @Test
+    public void testDijkstraPlusRapideCheminInexistant() {
+    	// On ne fait le test qu'avec un filtre sur les chemins autorisés
+    	ShortestPathData data = new ShortestPathData(graph, graph.get(135847), graph.get(103867), ArcInspectorFactory.getAllFilters().get(0));
+    	ShortestPathAlgorithm dijkstra = new DijkstraAlgorithm(data);
+    	ShortestPathAlgorithm aStar = new AStarAlgorithm(data);
+    	ShortestPathSolution solutionAStar = aStar.run();
+    	ShortestPathSolution solutionDijkstra = dijkstra.run();
+        assertTrue(solutionDijkstra.getSolvingTime().compareTo(solutionAStar.getSolvingTime()) < 0);
+    }
+    
+    @Test
+    public void testAStarPlusRapideLongTrajet() {
+    	// On ne fait le test qu'avec un filtre sur les chemins autorisés
+    	ShortestPathData data = new ShortestPathData(graph, graph.get(12305), graph.get(103867), ArcInspectorFactory.getAllFilters().get(0));
+    	ShortestPathAlgorithm dijkstra = new DijkstraAlgorithm(data);
+    	ShortestPathAlgorithm aStar = new AStarAlgorithm(data);
+    	ShortestPathSolution solutionAStar = aStar.run();
+    	ShortestPathSolution solutionDijkstra = dijkstra.run();
+        assertTrue(solutionDijkstra.getSolvingTime().compareTo(solutionAStar.getSolvingTime()) > 0);
+    }
+}