diff --git a/src/fr/test/test.java b/src/fr/test/test.java
index 112c472..bfdd014 100644
--- a/src/fr/test/test.java
+++ b/src/fr/test/test.java
@@ -15,33 +15,33 @@ import src.fr.api.*;
 
 public class test {
 
-    Category Engine;
-    Category Transmission;
-    Category Exterior;
-    Category Interior;
+    Category Engine = new CategoryImpl("Engine");
+    Category Transmission = new CategoryImpl("Transmission");
+    Category Exterior= new CategoryImpl("Exterior");
+    Category Interior= new CategoryImpl("Interior");
 
     //PartType
-    PartType EG100;
-    PartType EG133;
-    PartType EG210;
-    PartType ED110;
-    PartType ED180;
-    PartType EH120;
+    PartType EG100= new PartTypeImpl("EG100", Engine);
+    PartType EG133= new PartTypeImpl("EG133", Engine);
+    PartType EG210= new PartTypeImpl("EG210", Engine);
+    PartType ED110= new PartTypeImpl("ED110", Engine);
+    PartType ED180= new PartTypeImpl("ED180", Engine);
+    PartType EH120= new PartTypeImpl("EH120", Engine);
 
-    PartType TM5;
-    PartType TM6;
-    PartType TA5;
-    PartType TS6;
-    PartType TSF7;
-    PartType TC120;
+    PartType TM5= new PartTypeImpl("TM5", Transmission);
+    PartType TM6= new PartTypeImpl("TM6", Transmission);
+    PartType TA5= new PartTypeImpl("TA5", Transmission);
+    PartType TS6= new PartTypeImpl("TS6", Transmission);
+    PartType TSF7= new PartTypeImpl("TSF7", Transmission);
+    PartType TC120= new PartTypeImpl("TC120", Transmission);
 
-    PartType XC;
-    PartType XM;
-    PartType XS;
+    PartType XC= new PartTypeImpl("XC", Exterior);
+    PartType XM= new PartTypeImpl("XM", Exterior);
+    PartType XS= new PartTypeImpl("XS", Exterior);
 
-    PartType IN;
-    PartType IH;
-    PartType IS;
+    PartType IN= new PartTypeImpl("IN", Interior);
+    PartType IH= new PartTypeImpl("IH", Interior);
+    PartType IS= new PartTypeImpl("IS", Interior);
 
     CompatibilityManager cm;
 
@@ -50,34 +50,6 @@ public class test {
     @BeforeEach
     public void init(){
 
-        Engine = new CategoryImpl("Engine");
-        Transmission = new CategoryImpl("Transmission");
-        Exterior= new CategoryImpl("Exterior");
-        Interior= new CategoryImpl("Interior");
-
-        Engine = new CategoryImpl("Engine");
-        Transmission = new CategoryImpl("Transmission");
-        Exterior= new CategoryImpl("Exterior");
-        Interior= new CategoryImpl("Interior");
-        EG100= new PartTypeImpl("EG100", Engine);
-        EG133= new PartTypeImpl("EG133", Engine);
-        EG210= new PartTypeImpl("EG210", Engine);
-        ED110= new PartTypeImpl("ED110", Engine);
-        ED180= new PartTypeImpl("ED180", Engine);
-        EH120= new PartTypeImpl("EH120", Engine);
-        TM5= new PartTypeImpl("TM5", Transmission);
-        TM6= new PartTypeImpl("TM6", Transmission);
-        TA5= new PartTypeImpl("TA5", Transmission);
-        TS6= new PartTypeImpl("TS6", Transmission);
-        TSF7= new PartTypeImpl("TSF7", Transmission);
-        TC120= new PartTypeImpl("TC120", Transmission);
-        XC= new PartTypeImpl("XC", Exterior);
-        XM= new PartTypeImpl("XM", Exterior);
-        XS= new PartTypeImpl("XS", Exterior);
-        IN= new PartTypeImpl("IN", Interior);
-        IH= new PartTypeImpl("IH", Interior);
-        IS= new PartTypeImpl("IS", Interior);
-
         cm = new CompatibilityManagerImpl();
 
         Set<PartType> EH120Requirement = new HashSet<PartType>();