miinventario-v2/apps/backend/test/utils/test-app.ts

import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication, ValidationPipe } from '@nestjs/common';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { TypeOrmModule } from '@nestjs/typeorm';
import { JwtService } from '@nestjs/jwt';
import { DataSource } from 'typeorm';

import { AppModule } from '../../src/app.module';

export interface TestContext {
  app: INestApplication;
  moduleRef: TestingModule;
  dataSource: DataSource;
  jwtService: JwtService;
}

export async function createTestApp(): Promise<TestContext> {
  const moduleRef = await Test.createTestingModule({
    imports: [AppModule],
  })
    .overrideProvider(ConfigService)
    .useValue({
      get: (key: string, defaultValue?: string) => {
        const testConfig: Record<string, string> = {
          NODE_ENV: 'test',
          DATABASE_HOST: process.env.DATABASE_HOST || 'localhost',
          DATABASE_PORT: process.env.DATABASE_PORT || '5433',
          DATABASE_NAME: process.env.DATABASE_NAME || 'miinventario_test',
          DATABASE_USER: process.env.DATABASE_USER || 'postgres',
          DATABASE_PASSWORD: process.env.DATABASE_PASSWORD || 'postgres',
          JWT_SECRET: 'test-secret',
          JWT_EXPIRES_IN: '15m',
          JWT_REFRESH_SECRET: 'test-refresh-secret',
          JWT_REFRESH_EXPIRES_IN: '7d',
          REDIS_HOST: process.env.REDIS_HOST || 'localhost',
          REDIS_PORT: process.env.REDIS_PORT || '6380',
          S3_ENDPOINT: 'http://localhost:9002',
          S3_ACCESS_KEY: 'minioadmin',
          S3_SECRET_KEY: 'minioadmin',
          S3_BUCKET: 'miinventario-test',
          S3_REGION: 'us-east-1',
        };
        return testConfig[key] ?? defaultValue;
      },
    })
    .compile();

  const app = moduleRef.createNestApplication();

  // Apply same pipes as production
  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      forbidNonWhitelisted: true,
      transform: true,
    }),
  );

  await app.init();

  const dataSource = moduleRef.get<DataSource>(DataSource);
  const jwtService = moduleRef.get<JwtService>(JwtService);

  return { app, moduleRef, dataSource, jwtService };
}

export async function closeTestApp(context: TestContext): Promise<void> {
  if (context.dataSource?.isInitialized) {
    await context.dataSource.destroy();
  }
  await context.app.close();
}

export async function cleanDatabase(dataSource: DataSource): Promise<void> {
  const entities = dataSource.entityMetadatas;

  for (const entity of entities) {
    const repository = dataSource.getRepository(entity.name);
    await repository.query(`TRUNCATE TABLE "${entity.tableName}" CASCADE`);
  }
}