如何使用GRAPHQL测试e2e Nestjs API

import { Test, TestingModule } from '@nestjs/testing';
import { GraphQLModule } from '@nestjs/graphql';

describe('API', () => {
  let app: TestingModule;

  beforeAll(async () => {
    app = await Test.createTestingModule({
      imports: [
        GraphQLModule.forRoot({
          autoSchemaFile: true,
        }),
      ],
    }).compile();
  });

  // ...
});

describe('API', () => {
  let app: TestingModule;
  let client: ClientProxy;

  beforeAll(async () => {
    app = await Test.createTestingModule({
      imports: [
        GraphQLModule.forRoot({
          autoSchemaFile: true,
        }),
      ],
    }).compile();

    const httpServer = await app.resolve(HttpAdapterHost).httpAdapter.getHttpServer();
    const url = `http://localhost:${httpServer.address().port}/graphql`;

    client = new ClientProxy({
      transport: Transport.HTTP,
      options: {
        urls: [url],
      },
    });
  });

  // ...
});

describe('API', () => {
  // ...

  it('should return user by ID', async () => {
    const query = `
      query {
        user(id: 1) {
          id
          name
        }
      }
    `;

    const response = await client.send('graphql', { query }).toPromise();
    const user = response.data.user;

    expect(user).toBeDefined();
    expect(user.id).toBe(1);
    expect(user.name).toBe('John Doe');
  });

  // ...
});

npm run test:e2e