MAGETWO-44615: Add product to guest cart via API shows zero price

- added default billing & shipping address when a guest cart/quote is created

Author: Partica, Cristian

app/code/Magento/Quote/Model/GuestCart/GuestCartManagement.php

@@ -12,6 +12,7 @@
 use Magento\Quote\Model\QuoteIdMaskFactory;
 use Magento\Quote\Api\Data\PaymentInterface;
 use Magento\Quote\Api\CartRepositoryInterface;
+use Magento\Quote\Model\Quote\Address;
 
 /**
  * Cart Management class for guest carts.
@@ -35,21 +36,29 @@ class GuestCartManagement implements GuestCartManagementInterface
      */
     protected $cartRepository;
 
+    /**
+     * @var \Magento\Quote\Model\Quote\AddressFactory
+     */
+    protected $quoteAddressFactory;
+
     /**
      * Initialize dependencies.
      *
      * @param CartManagementInterface $quoteManagement
      * @param QuoteIdMaskFactory $quoteIdMaskFactory
+     * @param \Magento\Quote\Model\Quote\AddressFactory $quoteAddressFactory
      * @param CartRepositoryInterface $cartRepository
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
     public function __construct(
         CartManagementInterface $quoteManagement,
         QuoteIdMaskFactory $quoteIdMaskFactory,
+        \Magento\Quote\Model\Quote\AddressFactory $quoteAddressFactory,
         CartRepositoryInterface $cartRepository
     ) {
         $this->quoteManagement = $quoteManagement;
         $this->quoteIdMaskFactory = $quoteIdMaskFactory;
+        $this->quoteAddressFactory = $quoteAddressFactory;
         $this->cartRepository = $cartRepository;
     }
 
@@ -61,6 +70,15 @@ public function createEmptyCart()
         /** @var $quoteIdMask \Magento\Quote\Model\QuoteIdMask */
         $quoteIdMask = $this->quoteIdMaskFactory->create();
         $cartId = $this->quoteManagement->createEmptyCart();
+
+        /** @var \Magento\Quote\Model\Quote  $cart */
+        $cart = $this->cartRepository->get($cartId);
+        $billingAddress = $this->quoteAddressFactory->create()->setAddressType(Address::TYPE_BILLING);
+        $cart->addAddress($billingAddress);
+        $shippingAddress = $this->quoteAddressFactory->create()->setAddressType(Address::TYPE_SHIPPING);
+        $cart->addAddress($shippingAddress);
+        $cart->save();
+
         $quoteIdMask->setQuoteId($cartId)->save();
         return $quoteIdMask->getMaskedId();
     }

app/code/Magento/Quote/Test/Unit/Model/GuestCart/GuestCartManagementTest.php

@@ -24,6 +24,11 @@ class GuestCartManagementTest extends \PHPUnit_Framework_TestCase
      */
     protected $quoteIdMaskFactoryMock;
 
+    /**
+     * @var \PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $quoteAddressFactory;
+
     /**
      * @var \PHPUnit_Framework_MockObject_MockObject
      */
@@ -64,6 +69,15 @@ protected function setUp()
             '',
             false
         );
+
+        $this->quoteAddressFactory = $this->getMock(
+            'Magento\Quote\Model\Quote\AddressFactory',
+            ['create'],
+            [],
+            '',
+            false
+        );
+
         $this->quoteIdMaskMock = $this->getMock(
             'Magento\Quote\Model\QuoteIdMask',
             ['getQuoteId', 'getMaskedId', 'load', 'save', 'setQuoteId'],
@@ -95,6 +109,7 @@ protected function setUp()
             [
                 'quoteManagement' => $this->quoteManagementMock,
                 'quoteIdMaskFactory' => $this->quoteIdMaskFactoryMock,
+                'quoteAddressFactory' => $this->quoteAddressFactory,
                 'cartRepository' => $this->cartRepositoryMock
             ]
         );
@@ -104,12 +119,30 @@ public function testCreateEmptyCart()
     {
         $maskedCartId = 'masked1cart2id3';
         $cartId = 1;
-
+        $quoteMock = $this->getMock(
+            'Magento\Quote\Model\Quote',
+            ['get', 'save', 'addAddress'],
+            [],
+            '',
+            false
+        );
+        $quoteAddress = $this->getMock(
+            '\Magento\Quote\Model\Quote\Address',
+            ['get'],
+            [],
+            '',
+            false
+        );
         $this->quoteIdMaskMock->expects($this->once())->method('setQuoteId')->with($cartId)->willReturnSelf();
         $this->quoteIdMaskMock->expects($this->once())->method('save')->willReturnSelf();
         $this->quoteIdMaskMock->expects($this->once())->method('getMaskedId')->willreturn($maskedCartId);
         $this->quoteIdMaskFactoryMock->expects($this->once())->method('create')->willReturn($this->quoteIdMaskMock);
         $this->quoteManagementMock->expects($this->once())->method('createEmptyCart')->willReturn($cartId);
+        $this->quoteAddressFactory->expects($this->any())->method('create')->willReturn($quoteAddress);
+        $this->quoteIdMaskFactoryMock->expects($this->once())->method('create')->willReturn($this->quoteIdMaskMock);
+        $this->cartRepositoryMock->expects($this->once())->method('get')->willReturn($quoteMock);
+        $quoteMock->expects($this->any())->method('addAddress')->with($quoteAddress)->willReturnSelf();
+        $quoteMock->expects($this->any())->method('save')->willReturnSelf();
 
         $this->assertEquals($maskedCartId, $this->guestCartManagement->createEmptyCart());
     }