ticketbeast/tests/unit/Billing/FakePaymentGatewayTest.php

<?php

use App\Billing\FakePaymentGateway;
use App\Billing\PaymentFailedException;
use Illuminate\Foundation\Testing\WithoutMiddleware;
use Illuminate\Foundation\Testing\DatabaseMigrations;
use Illuminate\Foundation\Testing\DatabaseTransactions;

class FakePaymentGatewayTest extends TestCase
{
    /** @test */
    function charges_with_a_valid_payment_token_are_successful()
    {
        $paymentGateway = new FakePaymentGateway;

        $paymentGateway->charge(2500, $paymentGateway->getValidTestToken());

        $this->assertEquals(2500, $paymentGateway->totalCharges());
    }

    /** @test */
    function charges_with_an_invalid_payment_token_fail()
    {
        try {
            $paymentGateway = new FakePaymentGateway;
            $paymentGateway->charge(2500, 'invalid-payment-token');
        } catch (PaymentFailedException $e) {
            return;
        }

        $this->fail();
    }

    /** @test */
    function running_a_hook_before_the_first_charge()
    {
        $paymentGateway = new FakePaymentGateway;
        $callbackRan = false;

        $paymentGateway->beforeFirstCharge(function ($paymentGateway) use (&$callbackRan) {
            $callbackRan = true;
            $this->assertEquals(0, $paymentGateway->totalCharges());
        });

        $paymentGateway->charge(2500, $paymentGateway->getValidTestToken());
        $this->assertTrue($callbackRan);
        $this->assertEquals(2500, $paymentGateway->totalCharges());
    }
}