tests

tests/proto-middleware-dispatcher.spec.ts

@@ -4,7 +4,11 @@ describe('ProtoMiddlewareDispatcher', () => {
   class Base {
     value: number;
   }
-  class Sub extends Base {}
+  class Sub extends Base {
+    get mutated() { 
+      return this.value * 2;
+    }
+  }
 
   it('builds middlewares by prototype chain (prior: Base->Sub, normal: Sub->Base)', async () => {
     const d = new ProtoMiddlewareDispatcher<[res: number]>();
@@ -68,5 +72,6 @@ describe('ProtoMiddlewareDispatcher', () => {
     ]);
     expect(res).toBeInstanceOf(Sub);
     expect(res.value).toBe(9); // 5 + 3 + 1
+    expect(res.mutated).toBe(18);
   });
 });