Made CartItem implement Jsonable, so it can be cast to json by laravel when building a response

tests/CartItemTest.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Gloudemans\Tests\Shoppingcart;
+
+use Orchestra\Testbench\TestCase;
+use Gloudemans\Shoppingcart\CartItem;
+use Gloudemans\Shoppingcart\ShoppingcartServiceProvider;
+
+class CartItemTest extends TestCase
+{
+    /**
+     * Set the package service provider.
+     *
+     * @param \Illuminate\Foundation\Application $app
+     * @return array
+     */
+    protected function getPackageProviders($app)
+    {
+        return [ShoppingcartServiceProvider::class];
+    }
+
+    /** @test */
+    public function it_can_be_cast_to_an_array()
+    {
+        $cartItem = new CartItem(1, 'Some item', 10.00, ['size' => 'XL', 'color' => 'red']);
+
+        $this->assertEquals([
+            'id' => 1,
+            'name' => 'Some item',
+            'price' => 10.00,
+            'rowId' => '07d5da5550494c62daf9993cf954303f',
+            'qty' => null,
+            'options' => [
+                'size' => 'XL',
+                'color' => 'red'
+            ],
+            'tax' => 0,
+            'subtotal' => 0,
+        ], $cartItem->toArray());
+    }
+
+    /** @test */
+    public function it_can_be_cast_to_json()
+    {
+        $cartItem = new CartItem(1, 'Some item', 10.00, ['size' => 'XL', 'color' => 'red']);
+
+        $this->assertJson($cartItem->toJson());
+
+        $json = '{"rowId":"07d5da5550494c62daf9993cf954303f","id":1,"name":"Some item","qty":null,"price":10,"options":{"size":"XL","color":"red"},"tax":0,"subtotal":0}';
+
+        $this->assertEquals($json, $cartItem->toJson());
+    }
+}

tests/CartTest.php

@@ -66,7 +66,6 @@ class CartTest extends TestCase
         });
     }
 
-
     /** @test */
     public function it_has_a_default_instance()
     {
@@ -489,7 +488,7 @@ class CartTest extends TestCase
                 'price' => 10.00,
                 'tax' => 2.10,
                 'subtotal' => 10.0,
-                'options' => new CartItemOptions,
+                'options' => [],
             ],
             '370d08585360f5c568b18d1f2e4ca1df' => [
                 'rowId' => '370d08585360f5c568b18d1f2e4ca1df',
@@ -499,7 +498,7 @@ class CartTest extends TestCase
                 'price' => 10.00,
                 'tax' => 2.10,
                 'subtotal' => 10.0,
-                'options' => new CartItemOptions,
+                'options' => [],
             ]
         ], $content->toArray());
     }