[英]Do not pass e2e tests in framework NestJS
我使用NestJS框架。 使用@nestjs/typeorm 時,我為用戶創建了一個存儲庫。 使用這種方法創建存儲庫,我的e2e 測試. 使用數據庫時,所有數據都成功保存。 連接沒有問題。 這是我的文件:
app.module.ts
import { Module } from '@nestjs/common';
import { TypeOrmModule } from '@nestjs/typeorm';
import { Connection } from 'typeorm';
import { AuthModule } from './modules/auth/auth.module';
@Module({
imports: [
TypeOrmModule.forRoot(),
AuthModule,
],
})
export class AppModule {
constructor(private readonly connection: Connection) { }
}
auth.module.ts
import { Module } from '@nestjs/common';
import { TypeOrmModule } from '@nestjs/typeorm';
import { AuthService } from './auth.service';
import { AuthController } from './auth.controller';
import { Users } from '../../entity/Users';
@Module({
imports: [TypeOrmModule.forFeature([Users])],
controllers: [AuthController],
providers: [AuthService],
})
export class AuthModule {}
auth.service.ts
...
// my repo
constructor(
@InjectRepository(Users)
private readonly usersRepository: Repository<Users>,
) { }
...
app.e2e-spec.ts
import { INestApplication } from '@nestjs/common';
import { Test } from '@nestjs/testing';
import * as request from 'supertest';
import { AppModule } from './../src/app.module';
describe('AppController (e2e)', () => {
let app: INestApplication;
beforeAll(async () => {
const moduleFixture = await Test.createTestingModule({
imports: [AppModule],
}).compile();
app = moduleFixture.createNestApplication();
await app.init();
});
it('/ (GET)', () => {
return request(app.getHttpServer())
.get('/')
.expect(404)
.expect('{"statusCode":404,"error":"Not Found","message":"Cannot GET /"}'); //todo fix me
});
});
一切都是按照文檔編寫的。 當您運行npm run test:e2e 時,控制台給出以下錯誤:
> project@0.0.0 test:e2e
> jest --config ./test/jest-e2e.json
[Nest] 7206 - 2/2/2019, 5:06:52 PM [TypeOrmModule] Unable to connect to the database. Retrying (1)...
Error: getaddrinfo ENOTFOUND postgres postgres:5432
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:57:26)
[Nest] 7206 - 2/2/2019, 5:06:55 PM [TypeOrmModule] Unable to connect to the database. Retrying (2)... +3234ms
Error: getaddrinfo ENOTFOUND postgres postgres:5432
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:57:26)
FAIL test/app.e2e-spec.ts (6.198s)
AppController (e2e)
✕ / (GET) (6ms)
● AppController (e2e) › / (GET)
Timeout - Async callback was not invoked within the 5000ms timeout specified by jest.setTimeout.
at mapper (../node_modules/jest-jasmine2/build/queue_runner.js:41:52)
● AppController (e2e) › / (GET)
TypeError: Cannot read property 'getHttpServer' of undefined
17 |
18 | it('/ (GET)', () => {
> 19 | return request(app.getHttpServer())
| ^
20 | .get('/')
21 | .expect(404)
22 | .expect('{"statusCode":404,"error":"Not Found","message":"Cannot GET /"}'); // todo fix me
at Object.<anonymous> (app.e2e-spec.ts:19:24)
請幫我!
如果你想用AppModule
編寫 e2e 測試,你不需要導入AppModule
你只需要導入你的AppController
和AppService
,這樣你就可以避免連接到數據庫並使用模擬來測試整個應用程序流程。
import { INestApplication } from '@nestjs/common';
import { Test } from '@nestjs/testing';
import * as request from 'supertest';
import { AppController } from './../src/app.controller';
import { AppService } from './../src/app.service';
describe('AppController (e2e)', () => {
let app: INestApplication;
beforeAll(async () => {
const moduleFixture = await Test.createTestingModule({
imports: [],
controllers: [AppController],
providers: [AppService],
}).compile();
app = moduleFixture.createNestApplication();
await app.init();
});
it('/ (GET)', () => {
return request(app.getHttpServer())
.get('/')
.expect(404)
.expect('{"statusCode":404,"error":"Not Found","message":"Cannot GET /"}'); //todo fix me
});
});
使用這種方法,您可以獲得一個沒有TypeOrmModule
的干凈測試模塊。 注意:如果你需要模擬服務, Test
有一個方法overrideProvider
來覆蓋你的服務和像useClass
、 useValue
或useFactory
來提供你的模擬。
如果您想編寫一個集成測試以確認所有這些都正常工作,您可以覆蓋您的TypeOrmModule
的配置,將其傳遞給具有新數據庫配置的測試模塊,如本文所述。
我希望我有所幫助。 祝你好運和問候。
請務必按照https://docs.nestjs.com/fundamentals/testing#end-to-end-testing 上的示例使用app.close()
關閉app
對象。
即使您輸入了錯誤的 api 路徑,也可能發生該錯誤。 它不會記錄錯誤,但它總是在您顯示的那一行上拋出。 我也遇到了類似的問題,我將 globalPrefix 放在/api
,在我的測試中,我忘記了它的另一個嵌套應用程序實例,因此從 e2e 模擬中刪除 /api/ 修復了所有問題。
永遠不要在單元測試中使用TypeOrmModule
。 它將連接到數據庫。 當您的數據庫未啟動時,您將無法運行單元測試。
試試這個例子。
// mytest.e2e-spec.ts
import * as request from 'supertest';
import { Test } from "@nestjs/testing";
import { INestApplication } from '@nestjs/common';
import { MyTestsController } from './myTests.controller';
import { MyTestsService } from ".";
import { Warehouse } from './myTest.entity';
import { getRepositoryToken } from '@nestjs/typeorm';
describe("MyTestsController (e2e)", () => {
let app: INestApplication;
const myTests = [
{
id: "1ccc2222a-8072-4ff0-b5ff-103cc85f3be6",
name: "Name #1",
}
];
const myTestsCount = 1;
const getAllResult = { myTests, myTestsCount };
// Mock data for service
let myTestsService = { getAll: () => getAllResult };
beforeAll(async () => {
const module = await Test.createTestingModule({
providers: [
MyTestsService,
{
provide: getRepositoryToken(Warehouse),
useValue: myTestsService
}
],
controllers: [MyTestsController],
})
.overrideProvider(MyTestsService)
.useValue(myTestsService)
.compile();
app = module.createNestApplication();
await app.init();
});
beforeEach(async () => {});
it(`/GET all myTests`, async() => {
return await request(app.getHttpServer())
.get('/myTests')
.expect(200)
.expect(myTestsService.getAll());
});
afterAll(async () => {
await app.close();
});
});
和服務
// myTests.service.ts
public async getAll(query?): Promise<myTestsRO> {
const qb = await this.repo.createQueryBuilder("myTests");
const myTestsCount = await qb.getCount();
if ("limit" in query) {
qb.limit(query.limit);
}
if ("offset" in query) {
qb.offset(query.offset);
}
const myTests = await qb
.getMany()
.then(myTests =>
myTests.map(entity => WarehouseDto.fromEntity(entity))
);
return { myTests, myTestsCount };
}
和控制器
// myTest.controller.ts
@Get()
public async getAll(@Query() query): Promise<myTestsRO> {
try {
return await this.myTestsService.getAll(query);
} catch (error) {
throw new InternalServerErrorException(error.message);
}
}
希望這有幫助!
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