如何在单元测试中使用带有NestJS事务代码的jest.spyOn

import { Test, TestingModule } from '@nestjs/testing';
import { YourService } from './your.service';

describe('YourService', () => {
  let service: YourService;

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [YourService],
    }).compile();

    service = module.get<YourService>(YourService);
  });

  it('should do something with transaction', async () => {
    const mockTransaction = jest.spyOn(service, 'transaction').mockImplementation(() => {
      // 在这里编写你的模拟实现
    });

    // 执行你的测试代码

    expect(mockTransaction).toHaveBeenCalled();
  });
});