NestJS Testing

Master testing in NestJS for building reliable applications with comprehensive unit, integration, and end-to-end tests.

Unit Testing Setup

Creating and configuring test modules with TestingModule.

import { Test, TestingModule } from '@nestjs/testing';
import { UserService } from './user.service';
import { getRepositoryToken } from '@nestjs/typeorm';
import { User } from './entities/user.entity';

describe('UserService', () => {
  let service: UserService;
  let module: TestingModule;