portalweb-api/src/data-consult/__tests__/data-consult.service.spec.helper.ts

import { Test, TestingModule } from '@nestjs/testing';
import { Logger } from '@nestjs/common';
import { DataConsultService } from '../data-consult.service';
import { DataConsultRepository } from '../data-consult.repository';
import { IRedisClient } from '../../core/configs/cache/IRedisClient';
import { RedisClientToken } from '../../core/configs/cache/redis-client.adapter.provider';
import { DataSource } from 'typeorm';
import { DATA_SOURCE } from '../../core/constants';

export const createMockRepository = (
  methods: Partial<DataConsultRepository> = {},
) =>
  ({
    findStores: jest.fn(),
    findSellers: jest.fn(),
    findBillings: jest.fn(),
    findCustomers: jest.fn(),
    findProducts: jest.fn(),
    findProductsByCodauxiliar: jest.fn(),
    findAllProducts: jest.fn(),
    findAllCarriers: jest.fn(),
    findRegions: jest.fn(),
    ...methods,
  } as any);

export const createMockRedisClient = () =>
  ({
    get: jest.fn().mockResolvedValue(null),
    set: jest.fn().mockResolvedValue(undefined),
  } as any);

export interface DataConsultServiceTestContext {
  service: DataConsultService;
  mockRepository: jest.Mocked<DataConsultRepository>;
  mockRedisClient: jest.Mocked<IRedisClient>;
  mockDataSource: jest.Mocked<DataSource>;
  mockLogger: {
    error: jest.Mock;
  };
}

export async function createDataConsultServiceTestModule(
  repositoryMethods: Partial<DataConsultRepository> = {},
  redisClientMethods: Partial<IRedisClient> = {},
): Promise<DataConsultServiceTestContext> {
  const mockRepository = createMockRepository(repositoryMethods);
  const mockRedisClient = {
    ...createMockRedisClient(),
    ...redisClientMethods,
  } as any;
  const mockDataSource = {} as any;

  const module: TestingModule = await Test.createTestingModule({
    providers: [
      DataConsultService,
      {
        provide: DataConsultRepository,
        useValue: mockRepository,
      },
      {
        provide: RedisClientToken,
        useValue: mockRedisClient,
      },
      {
        provide: DATA_SOURCE,
        useValue: mockDataSource,
      },
    ],
  }).compile();

  const service = module.get<DataConsultService>(DataConsultService);

  const mockLogger = {
    error: jest.fn(),
  };

  jest
    .spyOn(Logger.prototype, 'error')
    .mockImplementation((message: any, ...optionalParams: any[]) => {
      mockLogger.error(message, ...optionalParams);
    });

  return {
    service,
    mockRepository,
    mockRedisClient,
    mockDataSource,
    mockLogger,
  };
}