nest install module service & controller for url-shortener

src/app.module.ts

@@ -1,9 +1,10 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { UrlShortenerModule } from './url-shortener/url-shortener.module';
 
 @Module({
-  imports: [],
+  imports: [UrlShortenerModule],
   controllers: [AppController],
   providers: [AppService],
 })

src/url-shortener/url-shortener.controller.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { UrlShortenerController } from './url-shortener.controller';
+
+describe('UrlShortenerController', () => {
+  let controller: UrlShortenerController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [UrlShortenerController],
+    }).compile();
+
+    controller = module.get<UrlShortenerController>(UrlShortenerController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

src/url-shortener/url-shortener.controller.ts

@@ -0,0 +1,6 @@
+import { Controller } from '@nestjs/common';
+
+@Controller('url-shortener')
+export class UrlShortenerController {
+  
+}

src/url-shortener/url-shortener.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { UrlShortenerService } from './url-shortener.service';
+import { UrlShortenerController } from './url-shortener.controller';
+
+@Module({
+  providers: [UrlShortenerService],
+  controllers: [UrlShortenerController]
+})
+export class UrlShortenerModule {}

src/url-shortener/url-shortener.service.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { UrlShortenerService } from './url-shortener.service';
+
+describe('UrlShortenerService', () => {
+  let service: UrlShortenerService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [UrlShortenerService],
+    }).compile();
+
+    service = module.get<UrlShortenerService>(UrlShortenerService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

src/url-shortener/url-shortener.service.ts

@@ -0,0 +1,4 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class UrlShortenerService {}