class BankCustomer {
  constructor(name, secretCode){
    let privatename = name;
    let privatepin = secretCode;
    this.getName = () => {
      return privatename;
    }
    this.verifyPinInput = (code) => {
      if (code === privatepin) {
        return true;
      } else {
        return false;
      }
    }
  }
}


const customer = new BankCustomer('John Doe', '3579');

const assert = require('assert');
assert.equal(typeof customer.getName, 'function');
assert.equal(typeof customer.verifyPinInput, 'function');
assert.equal(customer.getName(), 'John Doe');
assert.ok(customer.verifyPinInput('3579'));