Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Issue while (unit test) mocking container.get service

See original GitHub issue

Hello all,

I have some issues in unit testing container.get(service), checkout the below code.

import * as _ from 'lodash';
import {Service, Inject, Container} from 'typedi';
import OTPService from '../otp/index';

@Service()
export default class DevicechangeService {
  constructor(@Inject('devicechangeModel')private devicechangeModel, @Inject('otpModel')private otpModel, @Inject('logger')private logger,) {}

  /**
   *
   * Service to change the device
   *
   * @method deviceChange
   * @param {number} accountId
   * @param {string} deviceId
   * @param {number} mobile
   * @return {object} resolves after sending otp
   */

  public async deviceChange(accountId : number, deviceId : string, newdeviceId : string, created : number, mobile : number,) : Promise < any > {
    try {
      await this
        .devicechangeModel
        .addDeviceChangeDetails(accountId);

       let OTPServiceInstance = Container.get(OTPService);


      await this
        .otpModel
        .updateOTPtoInactiveForModule('DEVICE_CHANGE', accountId);
      //get the new otp

        //get the user details
        //send the otp
        let result = await OTPServiceInstance.sendOTP(serviceprovider, mobile, otpMessage, isd);
        if (result instanceof Object) {
          return result;
        }
        return true;
      } else {
        return {
          field: 421,
          message: errorCode('account').getMessage(421)
        };
      }
    } catch (e) {
      throw e;
    }
  }
}

Here i am not able to set mock class for OTPService, so not able to alter container.get(OTPService) from the above code.

I have tried below but still it does’nt come inside mocked service.

@Service()
class OTPService {
  public generateOTP : any = jest
    .fn()
    .mockImplementation(async(accountId : number, deviceId : string, status : string) => new Promise((resolve : any) => {
      console.log('calls here')
      resolve({})
    }),);
  public sendOTP : any = jest
    .fn()
    .mockImplementation(async(serviceprovider : string, mobile : number, otpMessage : string, isd : number) => new Promise((resolve : any) => resolve({})),);
}

describe('Account', () => {
  beforeEach(done => {
    Container.set(OTPService, new OTPService());
    done();
  });
  describe('#deviceChange', () => {
    it('check everyting cool', async done => {
      let logger = {};
      let otpModel = {
        updateOTPtoInactiveForModule: jest
          .fn()
          .mockImplementation(async(deviceChange : string, accountId : number) => new Promise((resolve : any) => resolve(true))),
        getUserPhoneService: jest
          .fn()
          .mockResolvedValue(true)
      };
      let devicechangeModel = {
        addDeviceChangeDetails: jest
          .fn()
          .mockResolvedValue(true),
        updateDeviceChangeToInactive: jest
          .fn()
          .mockResolvedValue(true)
      };
      // Container.set('OTPService', new OTPService());
      let DeviceChangeServiceInstance = new DeviceChangeService(devicechangeModel, otpModel, logger);
      let deviceChangeStatus = DeviceChangeServiceInstance.deviceChange(accountId, deviceId, newdeviceId, created, mobile);
    });
  });
});

Guys any input how to solve this…