E2E Testing MongoDB application with Mockgoose.

Author: vladotesanovic

examples/10-mockgoose/e2e/cats/cats.e2e-spec.ts

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+import * as express from 'express';
+import * as bodyParser from 'body-parser';
+import * as request from 'supertest';
+import { Test } from '@nestjs/testing';
+import { CatsModule } from '../../src/modules/cats/cats.module';
+
+describe('Cats', () => {
+    const server = express();
+    server.use(bodyParser.json());
+
+    beforeAll(async () => {
+        const module = await Test.createTestingModule({
+            modules: [CatsModule],
+        })
+            .compile();
+
+        const app = module.createNestApplication(server);
+        await app.init();
+    });
+
+    it(`/POST insert cat`, () => {
+        return request(server)
+            .post('/cats')
+            .send({
+                name: 'Tiger',
+                age: 2,
+                breed: 'Russian Blue'
+            })
+            .expect(201);
+    });
+
+    it(`/GET cats`, async (done) => {
+
+        const cats = await request(server)
+            .get('/cats')
+            .expect(200);
+
+        const [cat] = cats.body;
+
+        expect(cat.name).toBe('Tiger');
+        expect(cat.age).toBe(2);
+        expect(cat.breed).toBe('Russian Blue');
+
+        done();
+    });
+});

examples/10-mockgoose/e2e/jest-e2e.json

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+{
+    "moduleFileExtensions": [
+        "ts",
+        "tsx",
+        "js",
+        "json"
+    ],
+    "transform": {
+        "^.+\\.tsx?$": "<rootDir>/../node_modules/ts-jest/preprocessor.js"
+    },
+    "testRegex": "/e2e/.*\\.(e2e-test|e2e-spec).(ts|tsx|js)$",
+    "collectCoverageFrom" : ["src/**/*.{js,jsx,tsx,ts}", "!**/node_modules/**", "!**/vendor/**"],
+    "coverageReporters": ["json", "lcov"]
+}

examples/10-mockgoose/index.js

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+require('ts-node/register');
+require('./src/server');
+
+
+
+
+
+
+
+
+
+
+
+

examples/10-mockgoose/package.json

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+{
+  "name": "nest-typescript-starter",
+  "version": "1.0.0",
+  "description": "Nest TypeScript starter repository",
+  "license": "MIT",
+  "scripts": {
+    "start": "node index.js",
+    "prestart:prod": "tsc",
+    "start:prod": "node dist/server.js",
+    "e2e": "jest --config=e2e/jest-e2e.json",
+    "e2e:watch": "jest --watch --config=e2e/jest-e2e.json"
+  },
+  "dependencies": {
+    "@nestjs/common": "^4.3.0",
+    "@nestjs/core": "^4.3.0",
+    "@nestjs/microservices": "^4.3.0",
+    "@nestjs/testing": "^4.3.0",
+    "@nestjs/websockets": "^4.3.0",
+    "mongoose": "^4.11.13",
+    "redis": "^2.7.1",
+    "reflect-metadata": "^0.1.10",
+    "rxjs": "^5.4.3",
+    "typescript": "^2.4.2"
+  },
+  "devDependencies": {
+    "@types/mongoose": "^4.7.23",
+    "@types/jest": "^20.0.8",
+    "@types/node": "^7.0.41",
+    "mockgoose": "^7.3.3",
+    "jest": "^20.0.4",
+    "supertest": "^3.0.0",
+    "ts-jest": "^20.0.14",
+    "ts-node": "^3.3.0"
+  }
+}

examples/10-mockgoose/src/modules/app.module.ts

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+import { Module } from '@nestjs/common';
+import { CatsModule } from './cats/cats.module';
+
+@Module({
+  modules: [CatsModule],
+})
+export class ApplicationModule {}

examples/10-mockgoose/src/modules/cats/cats.controller.ts

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+import { Controller, Get, Post, Body, Param } from '@nestjs/common';
+import { CreateCatDto } from './dto/create-cat.dto';
+import { CatsService } from './cats.service';
+import { Cat } from './interfaces/cat.interface';
+
+@Controller('cats')
+export class CatsController {
+  constructor(private readonly catsService: CatsService) {}
+
+  @Post()
+  async create(@Body() createCatDto: CreateCatDto) {
+    this.catsService.create(createCatDto);
+  }
+
+  @Get()
+  async findAll(): Promise<Cat[]> {
+    return this.catsService.findAll();
+  }
+}

examples/10-mockgoose/src/modules/cats/cats.module.ts

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+import { Module } from '@nestjs/common';
+import { CatsController } from './cats.controller';
+import { CatsService } from './cats.service';
+import { catsProviders } from './cats.providers';
+import { DatabaseModule } from '../database/database.module';
+
+@Module({
+  modules: [DatabaseModule],
+  controllers: [CatsController],
+  components: [
+    CatsService,
+    ...catsProviders,
+  ],
+})
+export class CatsModule {}

examples/10-mockgoose/src/modules/cats/cats.providers.ts

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+import * as mongoose from 'mongoose';
+import { CatSchema } from './schemas/cat.schema';
+
+export const catsProviders = [
+  {
+    provide: 'CatModelToken',
+    useFactory: (mongoose) => mongoose.connection.model('Cat', CatSchema),
+    inject: ['DbToken'],
+  },
+];

examples/10-mockgoose/src/modules/cats/cats.service.ts

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+import { Model } from 'mongoose';
+import { Component, Inject } from '@nestjs/common';
+import { Cat } from './interfaces/cat.interface';
+import { CreateCatDto } from './dto/create-cat.dto';
+
+@Component()
+export class CatsService {
+  constructor(
+    @Inject('CatModelToken') private readonly catModel: Model<Cat>) {}
+
+  async create(createCatDto: CreateCatDto): Promise<Cat> {
+    const createdCat = new this.catModel(createCatDto);
+    return await createdCat.save();
+  }
+
+  async findAll(): Promise<Cat[]> {
+    return await this.catModel.find().exec();
+  }
+}

examples/10-mockgoose/src/modules/cats/dto/create-cat.dto.ts

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+export class CreateCatDto {
+  readonly name: string;
+  readonly age: number;
+  readonly breed: string;
+}