Jest Mockup ldap in nodejs

Question

Here is my AD class code I am using ldapjs library and trying to mock its add method but facing some warning which cause code coverage issue

const ldap = require('ldapjs'); 
    class AD {
     /**
     * Create Connection Active Directory
     */
     async createConnection(){
        return new Promise((resolve, reject) => {

            var options = {
                'rejectUnauthorized': false,
            };
            
            this.ADConnnection = ldap.createClient({
                url: [
                    process.env.LDAP_SERVER_1 + ':' + process.env.LDAP_SERVER_PORT,
                ],
                reconnect: true,
                tlsOptions: options
            });

            this.ADConnnection.on('error', (err) => {
                reject(err)
            })

            this.ADConnnection.bind(this.ldapUsername, this.ldapPassword, async (err) => {
                if (err) {
                    reject(err)
                }
            });

            resolve(true)
        });
    }

    /**
     * Create Record in Active Directory
     * @param {*} oRequest 
     * @param {*} oEntry 
     */
    async create(oRequest, oADCreateUserDT) {
        const sUsername = oRequest.vpnUsername;
        this.adOu = oRequest.apiUser;
        let oEntry = oADCreateUserDT.ADCreateUserData();

        if(oEntry.hasOwnProperty('msRADIUSFramedIPAddress')){
            this.adOu = ADConstant.AD_PARAMS.OU_DED;
            oADCreateUserDT.setTitle(ADConstant.AD_PARAMS.OU_DED);
            oEntry = oADCreateUserDT.ADCreateUserData();
        }

        return new Promise(async (resolve, reject) => {
            this.ADConnnection.add('cn=' + sUsername + ',ou=' + this.adOu + ',' + this.dc, oEntry, (err) => {
                if (err) {
                    reject(err);
                } else {
                    resolve(true);
                }
            });
            await this.closeConnection()
        });

    }

    async closeConnection() {
        this.ADConnnection.unbind(err => {
            if (err) {
                reject(err)
            }
        }, () => {
            this.ADConnnection.destroy();
        });
    }
   }

module.exports = AD;

Now this is my test class (I am using jest for nodejs testing)

const AD = require("../../app/libraries/AD");
const ldap = require('ldapjs');

jest.mock('ldapjs', () => {
    return jest.fn().mockImplementation(() => {
        return {
            createClient: jest.fn(),
            add: jest.fn(() => Promise.resolve(true)),
        }
    })
});

const isDedicatedIP = true;
const oRequest = { uuid: "vpn00s01" }
const oEntry = { UserAccountControl: ADConstant.AD_PARAMS.AD_ACC_CONTROL_ENABLE }
const oSearch = { attributes: ["cn", "Accountexpires", "UserAccountControl"], scope: "sub", filter: "" }

describe('should test all cases of ldap function', () => {

    test('should test constructor', async () => {
        const oAD = new AD()
        const response = oAD
        expect(JSON.stringify(response)).toBe(JSON.stringify({ "dc": "dc=undefined,dc=undefined", "adOu": "purevpn", "objectclass": "user" }));
    });

    test('should set Adu', async () => {
        const oAD = new AD()
        const response = oAD.setAdOu(isDedicatedIP)
        expect(JSON.stringify(response)).toBe(JSON.stringify({}));
    });

    test('should test create form ldap', async () => {
        const oAD = new AD()
        const response = oAD.create(oRequest, oADCreateUserDT)
        expect(JSON.stringify(response)).toBe(JSON.stringify({}));
    });
});

While running this jest test facing this issue

I don't understand how to mock my ldapjs methods. Even after adding in in mock implementation still having the same issue