diff --git a/src/tests.ts b/src/tests.ts
index 1d32cae..df65161 100644
--- a/src/tests.ts
+++ b/src/tests.ts
@@ -51,25 +51,28 @@ const subInst = await SubTest.createPromise({ name: "", prout: "" })
 // console.log(subInst)
 
 
-class BaseClass {
-    declare ["constructor"]: typeof BaseClass
-
-    static readonly issou = "gneugneu"
+class Box<T> {
+    declare ["constructor"]: typeof Box
+    constructor(public value: T) {}
 
     otherMethod() {
         return "prout" as const
     }
 
-    method<I extends object>(
-        this: Omit<BaseClass, "constructor"> & { ["constructor"]: Class<I> }
+    method<
+        C extends typeof Box & Class<I>,
+        I extends Box<any>
+    >(
+        // this: Omit<BaseClass<T>, "constructor"> & { ["constructor"]: Class<I> }
+        this: { ["constructor"]: C }
     ) {
-        this.otherMethod()
-        return new this.constructor()
+        // this.otherMethod()
+        return new this.constructor(69)
     }
 }
 
-class Superclass extends BaseClass {
-    declare ["constructor"]: typeof Superclass
+class SuperBox<T> extends Box<T> {
+    declare ["constructor"]: typeof SuperBox
 }
 
 console.log(new Superclass().method())