示例代码:

import { Test } from '@nestjs/testing';

import { getModelToken } from '@nestjs/mongoose';


describe('auth', () => {
  let deviceController: DeviceController;
  let deviceService: DeviceService;

  const mockRepository = {
    find() {
      return {};
    }
  };

  beforeAll(async () => {
    const module = await Test.createTestingModule({
      imports: [DeviceModule]
    })
      .overrideProvider(getModelToken('Auth'))
      .useValue(mockRepository)
      .compile();

    deviceService = module.get<DeviceService>(DeviceService);
  });

  // ...


});