我正在尝试使用jest和nestjs运行e2e测试，并且遇到了最奇怪的错误，该错误在我的google搜索中不返回任何内容（ ExpressAdapter不是构造函数）：< / p>
$ env-cmd -f .env.test jest --config ./test/jest-e2e.json
FAIL test/sensor.e2e-spec.ts (29.498 s)
SensorController (e2e)
× /sensors (GET) (15165 ms)
● SensorController (e2e) › /sensors (GET)
Timeout - Async callback was not invoked within the 5000 ms timeout specified by jest.setTimeout.Error: Timeout - Async callback was not invoked within the 5000 ms timeout specified by jest.setTimeout.
at mapper (../node_modules/jest-jasmine2/build/queueRunner.js:29:45)
● SensorController (e2e) › /sensors (GET)
TypeError: Cannot read property 'getHttpServer' of undefined
24 |
25 | it('/sensors (GET)', () => {
> 26 | return request(app.getHttpServer()).get('/sensors').expect(200);
| ^
27 | });
28 |
29 | afterAll(async () => {
at Object.<anonymous> (sensor.e2e-spec.ts:26:24)
Test Suites: 1 failed, 1 total
Tests: 1 failed, 1 total
Snapshots: 0 total
Time: 29.69 s
Ran all test suites.
ReferenceError: You are trying to `import` a file after the Jest environment has been torn down.
17 | }).compile();
18 |
> 19 | app = moduleFixture.createNestApplication();
| ^
20 |
21 | await app.init();
22 | fixture = await SensorFixture(app);
at ../node_modules/@nestjs/testing/testing-module.js:25:117
at Object.loadPackage (../node_modules/@nestjs/common/utils/load-package.util.js:9:27)
at TestingModule.createHttpAdapter (../node_modules/@nestjs/testing/testing-module.js:25:56)
at TestingModule.createNestApplication (../node_modules/@nestjs/testing/testing-module.js:13:43)
at Object.<anonymous> (sensor.e2e-spec.ts:19:25)
(node:1500) UnhandledPromiseRejectionWarning: TypeError: Caught error after test environment was torn down
ExpressAdapter is not a constructor
(node:1500) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:1500) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Jest did not exit one second after the test run has completed.
This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with `--detectOpenHandles` to troubleshoot this issue.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
我的jest-e2e.json：
{
"moduleFileExtensions": ["js", "json", "ts"],
"rootDir": ".",
"testEnvironment": "node",
"testRegex": ".e2e-spec.ts$",
"transform": {
"^.+\\.(t|j)s$": "ts-jest"
},
"moduleNameMapper": {
"~(.*)$": "<rootDir>/../src/$1"
}
}
jest.config.js：
module.exports = {
verbose: true,
preset: 'ts-jest',
rootDir: 'src',
moduleNameMapper: {
'~(.*)$': '<rootDir>/$1',
},
moduleFileExtensions: ['js', 'json', 'ts'],
moduleDirectories: [
"node_modules",
"src"
],
};
我正在使用typeorm，并且我很确定我的测试数据库配置正确，因为我的单元测试执行没有问题（我正在针对实际的测试数据库运行它们）。
ormconfig.js：
module.exports = {
type: process.env.DB_TYPE,
host: process.env.DB_HOST,
port: process.env.DB_PORT,
username: process.env.DB_USERNAME,
password: process.env.DB_PASSWORD,
database: process.env.DB_DATABASE,
entities: process.env.DB_ENTITIES.split(' '),
synchronize: process.env.DB_SYNCHRONIZE,
autoLoadEntities: true,
logging: process.env.DB_LOGGING,
}
env变量：
DB_TYPE = "postgres"
DB_HOST = "localhost"
DB_PORT = 5432
DB_USERNAME = "postgres"
DB_PASSWORD = "postgres"
DB_DATABASE = "sensor-dashboard-test"
DB_SYNCHRONIZE = true
DB_LOGGING = true
DB_ENTITIES = "**/*.entity{.ts,.js} ../src/modules/**/*.entity{.ts,.js}"
我的依赖项：
"dependencies": {
"@nestjs/common": "^7.0.0",
"@nestjs/core": "^7.0.0",
"@nestjs/platform-express": "^7.0.0",
"@nestjs/typeorm": "^7.1.0",
"class-transformer": "^0.2.3",
"class-validator": "^0.12.2",
"date-fns": "^2.15.0",
"env-cmd": "^10.1.0",
"nestjs-admin": "^0.4.0",
"nestjs-typeorm-paginate": "^2.1.1",
"pg": "^8.3.0",
"postgres": "^1.0.2",
"reflect-metadata": "^0.1.13",
"rimraf": "^3.0.2",
"rxjs": "^6.5.4",
"typeorm": "^0.2.25",
"uuid": "^8.2.0"
},
失败的整个e2e测试：
import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication } from '@nestjs/common';
import * as request from 'supertest';
import {
SensorFixtureInterface,
SensorFixture,
} from '~modules/sensor/sensor.fixture';
import { AppModule } from '~app.module';
describe('SensorController (e2e)', () => {
let app: INestApplication;
let fixture: SensorFixtureInterface;
beforeEach(async () => {
const moduleFixture: TestingModule = await Test.createTestingModule({
imports: [AppModule],
}).compile();
app = moduleFixture.createNestApplication();
await app.init();
fixture = await SensorFixture(app);
});
it('/sensors (GET)', () => {
return request(app.getHttpServer()).get('/sensors').expect(200);
});
afterAll(async () => {
await app.close();
});
});
app.module.ts：
import { Module } from '@nestjs/common';
import { AppService } from './app.service';
import { SensorModule } from '~/modules/sensor/sensor.module';
import { DefaultAdminModule } from 'nestjs-admin';
import { TypeOrmModule } from '@nestjs/typeorm';
import { MeasurementModule } from '~/modules/measurement/measurement.module';
@Module({
imports: [
SensorModule,
MeasurementModule,
DefaultAdminModule,
TypeOrmModule.forRoot(),
],
controllers: [],
providers: [AppService],
})
export class AppModule {}
链接到整个项目：https://github.com/xtrinch/sensor-dashboard-nestjs-backend