57 - Don't Mock What You Don't Own

app/Billing/Alternate/StripePaymentGateway.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Billing\Alternate;
+
+use App\Billing\PaymentGateway;
+
+class StripePaymentGateway implements PaymentGateway
+{
+    private $stripeClient;
+
+    public function __construct(\Stripe\ApiClient $stripeClient)
+    {
+        $this->stripeClient = $stripeClient;
+    }
+
+    public function charge($amount, $token)
+    {
+        $this->stripeClient->createCharge([
+            'amount' => $amount,
+            'source' => $token,
+            'currency' => 'usd',
+        ]);
+    }
+}