fix(test): stub names

Author: Gerald Baulig

src/stub.ts

@@ -13,12 +13,8 @@ export abstract class Stub
   static cfg: any = null;
   static logger: Logger = null;
 
-  private static getType<T extends Stub>(stub: T): string {
-    return stub.constructor.name;
-  }
-
   get type(): string {
-    return Stub.getType(this);
+    return this.constructor.name;
   }
 
   constructor(