2.4 - Faking the Payment Gateway

app/Billing/FakePaymentGateway.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Billing;
+
+class FakePaymentGateway implements PaymentGateway
+{
+    private $charges;
+
+    public function __construct()
+    {
+        $this->charges = collect();
+    }
+
+    public function getValidTestToken()
+    {
+        return "valid-token";
+    }
+
+    public function charge($amount, $token)
+    {
+        $this->charges[] = $amount;
+    }
+
+    public function totalCharges()
+    {
+        return $this->charges->sum();
+    }
+}

app/Billing/PaymentGateway.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Billing;
+
+interface PaymentGateway
+{
+    public function charge($amount, $token);
+}

app/Exceptions/Handler.php

@@ -44,6 +44,7 @@ class Handler extends ExceptionHandler
      */
     public function render($request, Exception $exception)
     {
+        throw $exception;
         return parent::render($request, $exception);
     }
 

app/Http/Controllers/ConcertOrdersController.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Concert;
+use Illuminate\Http\Request;
+use App\Billing\PaymentGateway;
+
+class ConcertOrdersController extends Controller
+{
+    private $paymentGateway;
+
+    public function __construct(PaymentGateway $paymentGateway)
+    {
+        $this->paymentGateway = $paymentGateway;
+    }
+
+    public function store($concertId)
+    {
+        $concert = Concert::find($concertId);
+        $ticketQuantity = request('ticket_quantity');
+        $amount = $ticketQuantity * $concert->ticket_price;
+        $token = request('payment_token');
+        $this->paymentGateway->charge($amount, $token);
+        return response()->json([], 201);
+    }
+}