fix(api): fixed the the app.e2e-spec.ts by mocking the PrismaService

package.json

@@ -51,6 +51,7 @@
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^4.0.0",
     "jest": "29.3.1",
+    "jest-mock-extended": "^2.0.4",
     "prettier": "^2.3.2",
     "source-map-support": "^0.5.20",
     "supertest": "^6.1.3",

src/app.module.ts

@@ -4,10 +4,11 @@ import { ConfigModule, ConfigService } from '@nestjs/config';
 import { TerminusModule } from '@nestjs/terminus';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
-import { PrismaService } from './prisma.service';
+import { PrismaService } from './prisma/prisma.service';
 import { PrismaHealthIndicator } from './health/prisma.health';
 import { ClientsModule, Transport } from '@nestjs/microservices';
 import { HealthController } from './health/health.controller';
+import { PrismaModule } from './prisma/prisma.module';
 
 @Module({
   imports: [
@@ -36,6 +37,7 @@ import { HealthController } from './health/health.controller';
     ]),
     HttpModule,
     TerminusModule,
+    PrismaModule,
   ],
   controllers: [AppController, HealthController],
   providers: [AppService, PrismaService, PrismaHealthIndicator],

src/health/health.controller.spec.ts

@@ -3,7 +3,7 @@ import { HealthController } from './health.controller';
 import { PrismaHealthIndicator } from './prisma.health';
 import { ConfigService } from '@nestjs/config';
 import { TerminusModule } from '@nestjs/terminus';
-import { PrismaService } from '../prisma.service';
+import { PrismaService } from '../prisma/prisma.service';
 
 describe('HealthController', () => {
   let controller: HealthController;

src/health/prisma.health.ts

@@ -4,7 +4,7 @@ import {
   HealthIndicator,
   HealthIndicatorResult,
 } from '@nestjs/terminus';
-import { PrismaService } from '../prisma.service';
+import { PrismaService } from '../prisma/prisma.service';
 
 @Injectable()
 export class PrismaHealthIndicator extends HealthIndicator {

src/prisma/prisma.module.ts

@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { PrismaService } from './prisma.service';
+
+@Module({
+  providers: [PrismaService],
+  exports: [PrismaService],
+})
+export class PrismaModule {}

src/prisma/prisma.service.spec.ts

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

test/app.e2e-spec.ts

@@ -2,21 +2,27 @@ import { Test, TestingModule } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
 import * as request from 'supertest';
 import { AppModule } from './../src/app.module';
+import { PrismaService } from '../src/prisma/prisma.service';
+import { mockDeep, DeepMockProxy } from 'jest-mock-extended';
+import { PrismaClient } from '@prisma/client';
 
 describe('AppController (e2e)', () => {
   let app: INestApplication;
 
   beforeEach(async () => {
     const moduleFixture: TestingModule = await Test.createTestingModule({
       imports: [AppModule],
-      // TODO: mock prisma service
-    }).compile();
+      providers: [PrismaService],
+    })
+      .overrideProvider(PrismaService)
+      .useValue(mockDeep<PrismaService>())
+      .compile();
 
     app = moduleFixture.createNestApplication();
     await app.init();
   });
 
   it('/ (GET)', () => {
-    return request(app.getHttpServer()).get('/api').expect('Doc Generator');
+    return request(app.getHttpServer()).get('/').expect('Doc Generator');
   });
 });