Styjun

i have two classes ValidationHelper, BeneficiaryHelper with a static method each which i am trying to mock using proxyquire but on running npm test its giving me error:

TypeError: Cannot read property 'checkMandatory' of undefined

typescript file code:

import ValidationHelper from '../validations/common';
import BeneficiaryHelper from '../validations/beneficiary';
const lib = nbind.init<typeof LibTypes>(__dirname + '/../../').lib;



class beneficiaryaddv2 

 utilities: any = ;

 constructor() 
 this.utilities = new lib.Utilities();
 


 parse(req: any, res: any, message: [k: string]: any ) 

 //..more code

 ValidationHelper.checkMandatory(req.body.beneficiaryType, 'beneficiaryType');
 ValidationHelper.checkMandatory(req.body.customerId, 'customerId');
 BeneficiaryHelper.checkBeneficiaryType(req.body.beneficiaryType);

 message.RESERVED1 = req.body.city;
 //..more code
 



export beneficiaryaddv2 

code for unit test of this file:

 class BeneficiaryHelper 
 static checkBeneficiaryType(beneficiaryType: string) return; 


 class ValidationHelper 
 static checkMandatory(stringValue: string, parameterName: string, errorMessage: string = '') return; 
 


describe('unit test for beneficiary add parse', () => 

let utilBase;
let utilGenerateRRNMock;
let utilGenerateSTANMock;

let target = common.proxyquire('../../APIServer/controller/beneficiaryaddv2', 
 'nbind': common.nbindStub,
 '../../local_modules/logger': common.LoggerMock,
 '../validations/common': ValidationHelper,
 '../../local_modules/dbconnmgr': common.DbConnMgrMock,
 '../validations/beneficiary': BeneficiaryHelper,
 '@noCalThrough': true
);

//...

);

Hope this works (y)!!!

let ValidationHelperMock = 
 ValidationHelper: class
 static checkMandatory(stringValue, parameterName, errorMessage) ;
 
;

let BeneficiaryHelperMock = 
 BeneficiaryHelper: class
 static checkBeneficiaryType(beneficiaryType) ;
 
;

describe('unit test for beneficiary add parse', () => 

let utilBase;
let utilGenerateRRNMock;
let utilGenerateSTANMock;

let target = common.proxyquire('../../APIServer/controller/beneficiaryaddv2', 
 'nbind': common.nbindStub,
 '../../local_modules/logger': common.LoggerMock,
 '../validations/common': ValidationHelperMock, //check these paths to exact from the test file
 '../../local_modules/dbconnmgr': common.DbConnMgrMock,
 '../validations/beneficiary': BeneficiaryHelperMock, //check these paths to exact from the test file
 '@noCalThrough': true
);

//...

);