bugfix(): fix invalid middleware instantiation

integration/hello-world/e2e/middleware-class.spec.ts

@@ -0,0 +1,60 @@
+import {
+  Controller,
+  Get,
+  INestApplication,
+  Injectable,
+  MiddlewareConsumer,
+  Module,
+} from '@nestjs/common';
+import { Test } from '@nestjs/testing';
+import * as request from 'supertest';
+import { ApplicationModule } from '../src/app.module';
+
+const RETURN_VALUE = 'test';
+
+@Injectable()
+class Middleware {
+  use(req, res, next) {
+    res.send(RETURN_VALUE);
+  }
+}
+
+@Controller()
+class TestController {
+  @Get('test')
+  test() {
+    return 'test';
+  }
+}
+
+@Module({
+  imports: [ApplicationModule],
+  controllers: [TestController],
+})
+class TestModule {
+  configure(consumer: MiddlewareConsumer) {
+    consumer.apply(Middleware).forRoutes('*');
+  }
+}
+
+describe('Middleware (class)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    app = (await Test.createTestingModule({
+      imports: [TestModule],
+    }).compile()).createNestApplication();
+
+    await app.init();
+  });
+
+  it(`forRoutes(*)`, () => {
+    return request(app.getHttpServer())
+      .get('/hello')
+      .expect(200, RETURN_VALUE);
+  });
+
+  afterEach(async () => {
+    await app.close();
+  });
+});