MAGETWO-33058: Refactor Checkout module

Author: Yurii Torbyk

dev/tests/unit/testsuite/Magento/Checkout/Controller/Cart/ConfigureTest.php

@@ -72,6 +72,7 @@ public function setUp()
             ->getMock();
         $resultRedirectFactoryMock = $this->getMockBuilder('Magento\Framework\Controller\Result\RedirectFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultRedirectFactoryMock->expects($this->any())
             ->method('create')

dev/tests/unit/testsuite/Magento/Checkout/Controller/CartTest.php

@@ -62,6 +62,7 @@ public function testGoBack()
             ->getMock();
         $resultRedirectFactoryMock = $this->getMockBuilder('Magento\Framework\Controller\Result\RedirectFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultRedirectFactoryMock->expects($this->any())
             ->method('create')

dev/tests/unit/testsuite/Magento/Checkout/Controller/Onepage/IndexTest.php

@@ -122,13 +122,15 @@ public function setUp()
 
         $resultPageFactoryMock = $this->getMockBuilder('Magento\Framework\View\Result\PageFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultPageFactoryMock->expects($this->any())
             ->method('create')
             ->willReturn($this->resultPageMock);
 
         $resultRedirectFactoryMock = $this->getMockBuilder('Magento\Framework\Controller\Result\RedirectFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultRedirectFactoryMock->expects($this->any())
             ->method('create')

dev/tests/unit/testsuite/Magento/Checkout/Controller/Onepage/SaveBillingTest.php

@@ -134,6 +134,7 @@ protected function setUp()
             ->getMock();
         $resultRawFactory = $this->getMockBuilder('Magento\Framework\Controller\Result\RawFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultRawFactory->expects($this->any())
             ->method('create')
@@ -144,6 +145,7 @@ protected function setUp()
             ->getMock();
         $resultJsonFactory = $this->getMockBuilder('Magento\Framework\Controller\Result\JsonFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultJsonFactory->expects($this->any())
             ->method('create')

dev/tests/unit/testsuite/Magento/Checkout/Controller/Onepage/SaveShippingTest.php

@@ -135,6 +135,7 @@ protected function setUp()
             ->getMock();
         $resultRawFactory = $this->getMockBuilder('Magento\Framework\Controller\Result\RawFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultRawFactory->expects($this->any())
             ->method('create')
@@ -145,6 +146,7 @@ protected function setUp()
             ->getMock();
         $resultJsonFactory = $this->getMockBuilder('Magento\Framework\Controller\Result\JsonFactory')
             ->disableOriginalConstructor()
+            ->setMethods(['create'])
             ->getMock();
         $resultJsonFactory->expects($this->any())
             ->method('create')