.. index::
    single: Getting Started; Simple Example

Simple Example
==============

Imagine we have a ``Temperature`` class which samples the temperature of a
locale before reporting an average temperature. The data could come from a web
service or any other data source, but we do not have such a class at present.
We can, however, assume some basic interactions with such a class based on its
interaction with the ``Temperature`` class:

.. code-block:: php

    class Temperature
    {
        private $service;

        public function __construct($service)
        {
            $this->service = $service;
        }

        public function average()
        {
            $total = 0;
            for ($i=0; $i<3; $i++) {
                $total += $this->service->readTemp();
            }
            return $total/3;
        }
    }

Even without an actual service class, we can see how we expect it to operate.
When writing a test for the ``Temperature`` class, we can now substitute a
mock object for the real service which allows us to test the behaviour of the
``Temperature`` class without actually needing a concrete service instance.

.. code-block:: php

    use \Mockery;

    class TemperatureTest extends \PHPUnit\Framework\TestCase
    {
        public function tearDown()
        {
            Mockery::close();
        }

        public function testGetsAverageTemperatureFromThreeServiceReadings()
        {
            $service = Mockery::mock('service');
            $service->shouldReceive('readTemp')
                ->times(3)
                ->andReturn(10, 12, 14);

            $temperature = new Temperature($service);

            $this->assertEquals(12, $temperature->average());
        }
    }

We create a mock object which our ``Temperature`` class will use and set some
expectations for that mock — that it should receive three calls to the ``readTemp``
method, and these calls will return 10, 12, and 14 as results.

.. note::

    PHPUnit integration can remove the need for a ``tearDown()`` method. See
    ":doc:`/reference/phpunit_integration`" for more information.

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About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard