Update test

Test

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;
     }
 }