generator-nest-js-boilerplate/generators/casl/templates/postgresql/jwt/src/modules/v1/users/users.service.spec.ts

This generator will help you to build your own Nest.js Mongodb API using TypeScript 4

import { Test, TestingModule } from '@nestjs/testing';
import UsersService from './users.service';

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

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

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

  it('should be defined', () => {
    expect(service).toBeDefined();
  });
});