From 3472361c350ae3883b5a209a78171a3ba711c735 Mon Sep 17 00:00:00 2001
From: Adam Wathan <adam.wathan@gmail.com>
Date: Thu, 29 Dec 2016 21:21:03 -0500
Subject: [PATCH] 56 - Dealing with Lingering State

---
 .../unit/Billing/StripePaymentGatewayTest.php | 46 +++++++++++++------
 1 file changed, 33 insertions(+), 13 deletions(-)

diff --git a/tests/unit/Billing/StripePaymentGatewayTest.php b/tests/unit/Billing/StripePaymentGatewayTest.php
index 119c160..66fe196 100644
--- a/tests/unit/Billing/StripePaymentGatewayTest.php
+++ b/tests/unit/Billing/StripePaymentGatewayTest.php
@@ -7,13 +7,44 @@ use Illuminate\Foundation\Testing\DatabaseTransactions;
 
 class StripePaymentGatewayTest extends TestCase
 {
+    protected function setUp()
+    {
+        parent::setUp();
+        $this->lastCharge = $this->lastCharge();
+    }
+
     /** @test */
     function charges_with_a_valid_payment_token_are_successful()
     {
-        // Create a new StripePaymentGateway
         $paymentGateway = new StripePaymentGateway(config('services.stripe.secret'));
 
-        $token = \Stripe\Token::create([
+        $paymentGateway->charge(2500, $this->validToken());
+
+        $this->assertCount(1, $this->newCharges());
+        $this->assertEquals(2500, $this->lastCharge()->amount);
+    }
+
+    private function lastCharge()
+    {
+        return array_first(\Stripe\Charge::all(
+            ['limit' => 1],
+            ['api_key' => config('services.stripe.secret')]
+        )['data']);
+    }
+
+    private function newCharges()
+    {
+        return \Stripe\Charge::all(
+            [
+                'ending_before' => $this->lastCharge ? $this->lastCharge->id : null,
+            ],
+            ['api_key' => config('services.stripe.secret')]
+        )['data'];
+    }
+
+    private function validToken()
+    {
+        return \Stripe\Token::create([
             "card" => [
                 "number" => "4242424242424242",
                 "exp_month" => 1,
@@ -21,16 +52,5 @@ class StripePaymentGatewayTest extends TestCase
                 "cvc" => "123"
             ]
         ], ['api_key' => config('services.stripe.secret')])->id;
-
-        // Create a new charge for some amount using a valid token
-        $paymentGateway->charge(2500, $token);
-
-        // Verify that the charge was completed successfully
-        $lastCharge = \Stripe\Charge::all(
-            ['limit' => 1],
-            ['api_key' => config('services.stripe.secret')]
-        )['data'][0];
-
-        $this->assertEquals(2500, $lastCharge->amount);
     }
 }