lets see if it passes tests

src/Entities/Schema.php

@@ -16,6 +16,7 @@
 use IteratorAggregate;
 use Rebilly\Entities\Coupons\Coupon;
 use Rebilly\Entities\Coupons\Redemption;
+use Rebilly\Entities\Shipping\ShippingZone;
 use Rebilly\Rest\Collection;
 
 /**

src/Entities/Shipping/Rate.php

@@ -0,0 +1,161 @@
+<?php
+/**
+ * This file is part of the PHP Rebilly API package.
+ *
+ * (c) 2016 Rebilly SRL
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
+namespace Rebilly\Entities\Shipping;
+
+use DomainException;
+use Rebilly\Rest\Resource;
+
+/**
+ * Class Rate.
+ */
+class Rate extends Resource
+{
+    /*
+     * @var string
+     */
+    private $name;
+
+    /*
+     * @var float
+     */
+    private $minOrderSubtotal;
+
+    /*
+     * @var float
+     */
+    private $maxOrderSubtotal;
+
+    /*
+     * @var float
+     */
+    private $price;
+
+    /*
+     * @var string
+     */
+    private $currency;
+
+    const MSG_REQUIRED_NAME = 'Name can not be blank.';
+    const MSG_REQUIRED_PRICE = 'Price can not be blank.';
+    const MSG_REQUIRED_CURRENCY = 'Currency can not be blank.';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct(array $data = [])
+    {
+        parent::__construct($data);
+    }
+
+    /**
+     * @param array $data
+     *
+     * @return Rate
+     */
+    public static function createFromData(array $data)
+    {
+        if (!isset($data['name'])) {
+            throw new DomainException(self::MSG_REQUIRED_NAME);
+        }
+
+        if (!isset($data['price'])) {
+            throw new DomainException(self::MSG_REQUIRED_NAME);
+        }
+
+        if (!isset($data['currency'])) {
+            throw new DomainException(self::MSG_REQUIRED_CURRENCY);
+        }
+
+        $rate = new Rate($data);
+
+        return $rate;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param mixed $name
+     */
+    public function setName($name)
+    {
+        $this->name = $name;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getMinOrderSubtotal()
+    {
+        return $this->minOrderSubtotal;
+    }
+
+    /**
+     * @param mixed $minOrderSubtotal
+     */
+    public function setMinOrderSubtotal($minOrderSubtotal)
+    {
+        $this->minOrderSubtotal = $minOrderSubtotal;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getMaxOrderSubtotal()
+    {
+        return $this->maxOrderSubtotal;
+    }
+
+    /**
+     * @param mixed $maxOrderSubtotal
+     */
+    public function setMaxOrderSubtotal($maxOrderSubtotal)
+    {
+        $this->maxOrderSubtotal = $maxOrderSubtotal;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getPrice()
+    {
+        return $this->price;
+    }
+
+    /**
+     * @param mixed $price
+     */
+    public function setPrice($price)
+    {
+        $this->price = $price;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getCurrency()
+    {
+        return $this->currency;
+    }
+
+    /**
+     * @param mixed $currency
+     */
+    public function setCurrency($currency)
+    {
+        $this->currency = $currency;
+    }
+}

src/Entities/ShippingZone.php → src/Entities/Shipping/ShippingZone.php

@@ -8,8 +8,9 @@
  * file that was distributed with this source code.
  */
 
-namespace Rebilly\Entities;
+namespace Rebilly\Entities\Shipping;
 
+use DomainException;
 use Rebilly\Rest\Entity;
 
 /**
@@ -29,6 +30,8 @@
  */
 final class ShippingZone extends Entity
 {
+    const MSG_RATES_WRONG = "Rates must be an array of Rate resource";
+
     /**
      * @return string
      */
@@ -64,6 +67,8 @@ public function getCountries()
     }
 
     /**
+     * @param []string $value
+     *
      * @return $this
      */
     public function setCountries($value)
@@ -80,10 +85,16 @@ public function getRates()
     }
 
     /**
+     * @param []Rate $value
+     *
      * @return $this
      */
     public function setRates($value)
     {
+        if (!is_array($value)) {
+            throw new DomainException(self::MSG_RATES_WRONG);
+        }
+
         return $this->setAttribute('rates', $value);
     }
 

src/Services/ShippingZoneService.php

@@ -4,7 +4,7 @@
 
 use ArrayObject;
 use JsonSerializable;
-use Rebilly\Entities\ShippingZone;
+use Rebilly\Entities\Shipping\ShippingZone;
 use Rebilly\Http\Exception\NotFoundException;
 use Rebilly\Http\Exception\UnprocessableEntityException;
 use Rebilly\Paginator;

tests/Api/ApiTest.php

@@ -743,6 +743,8 @@ public function provideEntityClasses()
             [Entities\Coupons\Coupon::class],
             [Entities\Coupons\Redemption::class],
             [Entities\ValuesList::class],
+            [Entities\Shipping\ShippingZone::class],
+            [Entities\Shipping\Rate::class],
         ];
     }
 
@@ -948,7 +950,7 @@ public function provideServiceClasses()
             [
                 'shippingZones',
                 Services\ShippingZoneService::class,
-                Entities\ShippingZone::class,
+                Entities\Shipping\ShippingZone::class,
             ],
         ];
     }
@@ -1283,6 +1285,27 @@ private function getFakeValue($attribute, $class)
                     $faker->word,
                     $faker->numberBetween(1, 100),
                 ];
+            case 'minOrderSubtotal':
+                return $faker->numberBetween(5, 7);
+            case 'maxOrderSubtotal':
+                return $faker->numberBetween(8, 10);
+            case 'price':
+                return $faker->numberBetween(2, 3);
+            case 'countries':
+                return ['US'];
+            case 'isDefault':
+                return false;
+            case 'rates':
+                return [
+                    Entities\Shipping\Rate::createFromData([
+                        'name' => 'test',
+                        'minOrderSubtotal'=> 4,
+                        'maxOrderSubtotal'=> 10,
+                        'price'=> 5,
+                        'default' => false,
+                        'currency'=> 'USD',
+                    ]),
+                ];
             case 'cancelCategory':
                 return $faker->randomElement(Entities\SubscriptionCancel::cancelCategories());
             case 'canceledBy':