2.9 - Handling Failed Charges

app/Billing/FakePaymentGateway.php

@@ -18,6 +18,9 @@ class FakePaymentGateway implements PaymentGateway
 
     public function charge($amount, $token)
     {
+        if ($token !== $this->getValidTestToken()) {
+            throw new PaymentFailedException;
+        }
         $this->charges[] = $amount;
     }
 

app/Billing/PaymentFailedException.php

@@ -0,0 +1,5 @@
+<?php
+
+namespace App\Billing;
+
+class PaymentFailedException extends \RuntimeException {}