diff --git a/src/Configurator.java b/src/Configurator.java
index 3c39169..9ce36d1 100644
--- a/src/Configurator.java
+++ b/src/Configurator.java
@@ -12,6 +12,7 @@ public class Configurator implements fr.istic.nplouzeau.cartaylor.api.Configurat
     private Set<Category> categories;
     private Set<PartType> partTypes;
     private Configuration configuration;
+    private CompatibilityChecker compatibilityChecker;
 
     public Configurator (Set<Category> cat, Set<PartType> pt, Configuration config) {
         this.categories= cat;
@@ -42,6 +43,6 @@ public class Configurator implements fr.istic.nplouzeau.cartaylor.api.Configurat
 
     @Override
     public CompatibilityChecker getCompatibilityChecker() {
-        return null;
+       return this.compatibilityChecker;
     }
 }
diff --git a/src/Test.java b/src/Test.java
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test.java b/tests/test.java
index c4ab749..fb09535 100644
--- a/tests/test.java
+++ b/tests/test.java
@@ -1,5 +1,23 @@
 package tests;
+import src.*;
 
 public class test {
+    public static void main(String[] args){
+        Category Engine = new Category("Engine");
+        Category Transmission = new Category("Transmission");
+        Category Exterior= new Category("Exterior");
+        Category Interior= new Category("Interior");
+
+        //PartType
+        PartType EG100= new PartType("EG100", Engine);
+        PartType EG133= new PartType("EG133", Engine);
+        PartType EG210= new PartType("EG210", Engine);
+        PartType ED110= new PartType("ED110", Engine);
+        PartType ED180= new PartType("ED180", Engine);
+        PartType EH120= new PartType("EH120", Engine);
+
+        //Transmission
+        PartType TM5= new PartType("TM5", Engine);
+    }
     
 }