diff --git a/src/tests.ts b/src/tests.ts
index 2930e45..d61e2d9 100644
--- a/src/tests.ts
+++ b/src/tests.ts
@@ -4,8 +4,8 @@ import { ClassesInstances, MergeInheritanceTree } from "./util"
 
 
 const Identifiable = <ID>() =>
-    trait(Parent => {
-        abstract class Identifiable extends Parent {
+    trait(Super => {
+        abstract class Identifiable extends Super {
             abstract readonly id: ID
 
             equals(el: Identifiable) {
@@ -22,9 +22,9 @@ const Identifiable = <ID>() =>
     })
 
 const ImplementsIdentifiable = <ID>(defaultID: ID) =>
-    trait(Parent => {
+    trait(Super => {
         abstract class ImplementsIdentifiable extends extendsAndExpresses(
-            Parent,
+            Super,
             Identifiable<ID>(),
         ) {
             id: ID = defaultID
@@ -39,8 +39,8 @@ const ImplementsIdentifiable = <ID>(defaultID: ID) =>
     })
 
 
-const Permissible = trait(Parent => {
-    abstract class Permissible extends Parent {
+const Permissible = trait(Super => {
+    abstract class Permissible extends Super {
         static readonly defaultPermissions: string[] = []
         permissions: string[] = []
 
@@ -72,26 +72,46 @@ console.log(user1)
 console.log(user1.equals(user1))
 
 
-abstract class Test1 {
-    declare static name: string
-    abstract name: string
+const Test1 = trait(Super => {
+    abstract class Test1 extends Super {
+        declare static name: string
+        declare static testValue: (
+            { _tag: "type1", value: string } |
+            { _tag: "type2", value: number }
+        )
 
-    declare createdAt: Date
-    declare readonly status: (
-        { _tag: "awaitingPayment" } |
-        { _tag: "active", activeSince: Date, expiresAt?: Date } |
-        { _tag: "expired", expiredSince: Date }
-    )
-}
+        abstract name: string
 
-class Test2 {
-    declare readonly status: { _tag: "active", activeSince: Date, expiresAt?: Date }
-}
+        declare createdAt: Date
+        declare readonly status: (
+            { _tag: "awaitingPayment" } |
+            { _tag: "active", activeSince: Date, expiresAt?: Date } |
+            { _tag: "expired", expiredSince: Date }
+        )
+    }
 
-class Test3 {
-    declare lol: 10n
-}
+    return Test1
+})
 
+const Test2 = trait(Super => {
+    abstract class Test2 extends Super {
+        declare readonly status: { _tag: "active", activeSince: Date, expiresAt?: Date }
+    }
+
+    return Test2
+})
+
+const Test3 = trait(Super => {
+    abstract class Test3 extends Super {
+        declare static testValue: { _tag: "type2", value: number }
+        declare lol: 10n
+    }
+
+    return Test3
+})
+
+const TestObjectProto = expresses(Test1, Test2, Test3)
+TestObjectProto.testValue
 
 type CleanupInheritanceTreeProperties<Classes extends readonly AbstractClass<any>[]> = (
     MergeInheritanceTree<