spaghiajoeojo / express-beans

import { InjectLogger } from '@/decorators/InjectLogger';

import { Bean, Logger as PinoLogger } from '@/main';

import Logger from '@/Logger';

jest.mock('@/decorators', () => ({

  registeredBeans: new Map(),

  registeredMethods: new Map(),

  logger: {

    info: jest.fn(),

    debug: jest.fn(),

    error: jest.fn(),

  },

}));

jest.mock('@/Logger');

describe('InjectLogger.ts', () => {

  beforeEach(() => {

    jest.resetAllMocks();

    (Logger as jest.Mock).mockImplementation(jest.requireActual('@/Logger').default);

  });

  it('injects a logger', async () => {

    // GIVEN

    class Class {

      @InjectLogger()

      private logger!: PinoLogger;

      getLogger() {

        return this.logger;

      }

    }

    // WHEN

    const instance = new Class();

    await flushPromises();

    // THEN

    expect(instance.getLogger()).toBeDefined();

  });

  it('injects a logger with a scope', async () => {

    // GIVEN

    @Bean

    class ClassBean {

      @InjectLogger('ClassBean')

      private logger!: PinoLogger;

    }

    // WHEN

    const instance = new ClassBean();

    await flushPromises();

    await flushPromises();

    await flushPromises();

    // THEN

    instance.getLogger().debug('ciao');

    expect(instance.getLogger()).toBeDefined();

    expect(Logger).toBeCalledWith('ClassBean');

  });

});