feat: add endpoint for getting API version

src/app.controller.spec.ts

@@ -1,6 +1,7 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { version } from '../package.json';
 
 describe('AppController', () => {
   let appController: AppController;
@@ -15,8 +16,8 @@ describe('AppController', () => {
   });
 
   describe('root', () => {
-    it('should return "Hello World!"', () => {
-      expect(appController.getHello()).toBe('Hello World!');
+    it('should return "$version"', () => {
+      expect(appController.getVersion()).toBe(version);
     });
   });
 });

src/app.controller.ts

@@ -6,7 +6,7 @@ export class AppController {
   constructor(private readonly appService: AppService) {}
 
   @Get()
-  getHello(): string {
-    return this.appService.getHello();
+  getVersion(): string {
+    return this.appService.getVersion();
   }
 }

src/app.service.ts

@@ -1,8 +1,9 @@
 import { Injectable } from '@nestjs/common';
+import { version } from '../package.json';
 
 @Injectable()
 export class AppService {
-  getHello(): string {
-    return 'Hello World!';
+  getVersion(): string {
+    return version;
   }
 }

test/app.e2e-spec.ts

@@ -2,6 +2,7 @@ import { Test, TestingModule } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
 import * as request from 'supertest';
 import { AppModule } from './../src/app.module';
+import { version } from '../package.json';
 
 describe('AppController (e2e)', () => {
   let app: INestApplication;
@@ -16,9 +17,6 @@ describe('AppController (e2e)', () => {
   });
 
   it('/ (GET)', () => {
-    return request(app.getHttpServer())
-      .get('/')
-      .expect(200)
-      .expect('Hello World!');
+    return request(app.getHttpServer()).get('/').expect(200).expect(version);
   });
 });

tsconfig.json

@@ -16,6 +16,7 @@
     "noImplicitAny": false,
     "strictBindCallApply": false,
     "forceConsistentCasingInFileNames": false,
-    "noFallthroughCasesInSwitch": false
+    "noFallthroughCasesInSwitch": false,
+    "resolveJsonModule": true
   }
 }