diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9920c87
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+
+# bloop and metals
+.bloop
+.bsp
+.metals
+project/metals.sbt
+
+# vs code
+.vscode
+.idea
diff --git a/src/fr/impl/Parts/Engine.java b/src/fr/impl/Parts/Engine.java
index 3587291..5b0ae1f 100644
--- a/src/fr/impl/Parts/Engine.java
+++ b/src/fr/impl/Parts/Engine.java
@@ -1,6 +1,5 @@
 package src.fr.impl.Parts;
 
-import src.fr.api.PartType;
 import src.fr.impl.CategoryImpl;
 import src.fr.impl.PartImpl;
 import src.fr.impl.PartTypeImpl;
diff --git a/src/fr/test/test.java b/src/fr/test/test.java
index f048e13..d1094b0 100644
--- a/src/fr/test/test.java
+++ b/src/fr/test/test.java
@@ -16,6 +16,10 @@ import src.fr.api.*;
 public class test {
     CategoryImpl engine = new CategoryImpl("Engine");
     CategoryImpl transmission = new CategoryImpl("Transmission");
+    CategoryImpl exterior = new CategoryImpl("Exterior");
+    CategoryImpl interior = new CategoryImpl("Interior");
+
+
 
 
     Engine EG100 = new Engine("EG100",engine);
@@ -32,84 +36,65 @@ public class test {
     Transmission TSF7= new Transmission("TSF7", transmission);
     Transmission TC120= new Transmission("TC120", transmission);
 
-    /*
-    Category Engine = new CategoryImpl("Engine");
-    Category Transmission = new CategoryImpl("Transmission");
-    Category Exterior= new CategoryImpl("Exterior");
-    Category Interior= new CategoryImpl("Interior");
+    Exterior XC= new Exterior("XC", exterior);
+    Exterior XM= new Exterior("XM", exterior);
+    Exterior XS= new Exterior("XS", exterior);
 
-    //PartType
-    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);
+    Interior IN= new Interior("IN", interior);
+    Interior IH= new Interior("IH", interior);
+    Interior IS= new Interior("IS", interior);
 
-    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= new PartTypeImpl("XC", Exterior);
-    PartType XM= new PartTypeImpl("XM", Exterior);
-    PartType XS= new PartTypeImpl("XS", Exterior);
 
-    PartType IN= new PartTypeImpl("IN", Interior);
-    PartType IH= new PartTypeImpl("IH", Interior);
-    PartType IS= new PartTypeImpl("IS", Interior);
 
     CompatibilityManager cm = new CompatibilityManagerImpl();
-    */
     @Before
     public void init(){
 
-        /*
+        
         Set<PartType> EH120Requirement = new HashSet<PartType>();
-        EH120Requirement.add(TC120);
+        EH120Requirement.add(TC120.getType());
 
         Set<PartType> TA5Incompatibilities = new HashSet<PartType>();
-        TA5Incompatibilities.add(EG100);
+        TA5Incompatibilities.add(EG100.getType());
 
         Set<PartType> TSF7Incompatibilities = new HashSet<PartType>();
-        TSF7Incompatibilities.add(EG100);
-        TSF7Incompatibilities.add(EG133);
-        TSF7Incompatibilities.add(ED110);
+        TSF7Incompatibilities.add(EG100.getType());
+        TSF7Incompatibilities.add(EG133.getType());
+        TSF7Incompatibilities.add(ED110.getType());
 
         Set<PartType> TC120Requirement = new HashSet<PartType>();
-        TC120Requirement.add(EH120);
+        TC120Requirement.add(EH120.getType());
 
         Set<PartType> XCIncompatibilities = new HashSet<PartType>();
-        XCIncompatibilities.add(EG210);
+        XCIncompatibilities.add(EG210.getType());
 
         Set<PartType> XMIncompatibilities = new HashSet<PartType>();
-        XMIncompatibilities.add(EG100);
+        XMIncompatibilities.add(EG100.getType());
 
         Set<PartType> XSIncompatibilities = new HashSet<PartType>();
-        XSIncompatibilities.add(EG100);
+        XSIncompatibilities.add(EG100.getType());
         Set<PartType> XSRequirement = new HashSet<PartType>();
-        XSRequirement.add(IS);
+        XSRequirement.add(IS.getType());
 
         Set<PartType> ISIncompatibilities = new HashSet<PartType>();
-        ISIncompatibilities.add(EG100);
-        ISIncompatibilities.add(TM5);
+        ISIncompatibilities.add(EG100.getType());
+        ISIncompatibilities.add(TM5.getType());
         Set<PartType> ISRequirement = new HashSet<PartType>();
-        ISRequirement.add(XS);
+        ISRequirement.add(XS.getType());
 
-        cm.addRequirements(EH120, EH120Requirement);
-        cm.addIncompatibilities(TA5, TA5Incompatibilities);
-        cm.addIncompatibilities(TSF7, TSF7Incompatibilities);
-        cm.addRequirements(TC120, TC120Requirement);
-        cm.addIncompatibilities(XC, XCIncompatibilities);
-        cm.addIncompatibilities(XM, XMIncompatibilities);
-        cm.addIncompatibilities(XS, XSIncompatibilities);
-        cm.addRequirements(XS, XSRequirement);
-        cm.addIncompatibilities(IS, ISIncompatibilities);
-        cm.addRequirements(IS, ISRequirement);
+        cm.addRequirements(EH120.getType(), EH120Requirement);
+        cm.addIncompatibilities(TA5.getType(), TA5Incompatibilities);
+        cm.addIncompatibilities(TSF7.getType(), TSF7Incompatibilities);
+        cm.addRequirements(TC120.getType(), TC120Requirement);
+        cm.addIncompatibilities(XC.getType(), XCIncompatibilities);
+        cm.addIncompatibilities(XM.getType(), XMIncompatibilities);
+        cm.addIncompatibilities(XS.getType(), XSIncompatibilities);
+        cm.addRequirements(XS.getType(), XSRequirement);
+        cm.addIncompatibilities(IS.getType(), ISIncompatibilities);
+        cm.addRequirements(IS.getType(), ISRequirement);
 
-        */
+    
 
 
     }