typescript - TypeError : this. graphInspector.insertEnhancerMetadataCache 不是一个函数

Question

我正在使用 NestJS、Jest 和 Supertest。我创建了一个规范文件来测试我的 Controller 。

规范文件:

import * as request from 'supertest';
import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication } from '@nestjs/common';
import { IzvodiNalogModule } from './izvodi_nalog.module';
import { AppModule } from 'src/app.module';

describe('izvodi_nalog', () => {
  let app: INestApplication;

  beforeAll(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule, IzvodiNalogModule],
    }).compile();

    app = moduleFixture.createNestApplication();
    await app.init();
  });

  it(`/GET find modal fields`, async () => {
    const response = await request(app.getHttpServer())
      .get('/izvodi/modal-data')
      .set('Accept', 'application/json')
      .expect('Content-Type', /json/)
      .expect(200);

    expect(response.body).toBeDefined();
  });

  afterAll(async () => {
    await app.close();
  });
});

我运行yarn jest -- name-of-file.spec.ts 并得到:

➜  izvodi-api git:(krd-620-unos-novog-izvoda) ✗ yarn jest -- izvodi_nalog.controller.spec.ts
 FAIL  src/tenants/partner/modules/izvodi_nalog/izvodi_nalog.controller.spec.ts (7.596 s)
  ● izvodi_nalog › /GET find modal fields

    TypeError: this.graphInspector.insertEnhancerMetadataCache is not a function

      at DependenciesScanner.insertInjectable (../../../node_modules/@nestjs/core/scanner.js:259:33)
      at ../../../node_modules/@nestjs/core/scanner.js:147:66
          at Array.forEach (<anonymous>)
      at ../../../node_modules/@nestjs/core/scanner.js:147:39
          at Array.forEach (<anonymous>)
      at DependenciesScanner.reflectInjectables (../../../node_modules/@nestjs/core/scanner.js:146:27)
      at DependenciesScanner.reflectDynamicMetadata (../../../node_modules/@nestjs/core/scanner.js:124:14)
      at ../../../node_modules/@nestjs/core/scanner.js:114:18
          at Array.forEach (<anonymous>)
      at DependenciesScanner.reflectControllers (../../../node_modules/@nestjs/core/scanner.js:112:21)


  ● Test suite failed to run

    TypeError: Cannot read properties of undefined (reading 'close')

      28 |
      29 |   afterAll(async () => {
    > 30 |     await app.close();
         |               ^
      31 |   });
      32 | });
      33 |

      at tenants/partner/modules/izvodi_nalog/izvodi_nalog.controller.spec.ts:30:15

Test Suites: 1 failed, 1 total
Tests:       1 failed, 1 total
Snapshots:   0 total
Time:        7.656 s
Ran all test suites matching /izvodi_nalog.controller.spec.ts/i.

进一步的背景: 我正在开发我公司制作的 monorepo，所以我怀疑 package.json 中是否有任何错误。我还尝试在 monorepo 内的不同包中运行所有测试，其代码位于 main 上，因此应该是防弹的并经过测试，但仍然得到相同的错误并且所有测试都失败，所以我怀疑它是因为代码。

如果这里有人知道发生了什么，请告诉我。我打算向我的导师询问这个问题，但首先我想至少对这个问题有一些了解，这样我就不会显得像个白痴。

Answer 1

确保@nestjs/testing的版本与@nestjs/core的版本匹配。如果您通过 nest update --force 命令更新 NestJS，它只会更新 @nestjs/core，这会破坏测试。