const assert = require('assert');

class BankCustomer {
    constructor(clientName, clientPin) {
        this.name = clientName;
        let secretPin = clientPin;
        this.getSecretPin = () => {
            return secretPin;
        };
    }
    verifyPinInput (clientPin) {
        if (this.getSecretPin() === clientPin) {
            return true;
        } else {
            return false;
}
    }

    getName() {
        return this.name;
    }
}

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