From ccba42089f1ca465cb43fc60339671db5e9a504a Mon Sep 17 00:00:00 2001
From: NazarKlovanych <nazarn96@gmail.com>
Date: Tue, 13 Nov 2018 16:59:23 +0200
Subject: [PATCH] Customer related values are NULL for guests

---
 app/code/Magento/Quote/Model/QuoteManagement.php            | 6 ++++++
 .../Magento/Quote/Test/Unit/Model/QuoteManagementTest.php   | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/code/Magento/Quote/Model/QuoteManagement.php b/app/code/Magento/Quote/Model/QuoteManagement.php
index 451ad08d425f5..b71cee9845134 100644
--- a/app/code/Magento/Quote/Model/QuoteManagement.php
+++ b/app/code/Magento/Quote/Model/QuoteManagement.php
@@ -354,6 +354,12 @@ public function placeOrder($cartId, PaymentInterface $paymentMethod = null)
         if ($quote->getCheckoutMethod() === self::METHOD_GUEST) {
             $quote->setCustomerId(null);
             $quote->setCustomerEmail($quote->getBillingAddress()->getEmail());
+            $quote->setCustomerFirstname($quote->getBillingAddress()->getFirstname());
+            $quote->setCustomerLastname($quote->getBillingAddress()->getLastname());
+
+            if ($quote->getBillingAddress()->getMiddlename()) {
+                $quote->setCustomerMiddlename($quote->getBillingAddress()->getMiddlename());
+            }
             $quote->setCustomerIsGuest(true);
             $quote->setCustomerGroupId(\Magento\Customer\Api\Data\GroupInterface::NOT_LOGGED_IN_ID);
         }
diff --git a/app/code/Magento/Quote/Test/Unit/Model/QuoteManagementTest.php b/app/code/Magento/Quote/Test/Unit/Model/QuoteManagementTest.php
index 107445bb18d2a..c7b271ca1d3c6 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/QuoteManagementTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/QuoteManagementTest.php
@@ -644,7 +644,7 @@ public function testPlaceOrderIfCustomerIsGuest()
 
         $addressMock = $this->createPartialMock(\Magento\Quote\Model\Quote\Address::class, ['getEmail']);
         $addressMock->expects($this->once())->method('getEmail')->willReturn($email);
-        $this->quoteMock->expects($this->once())->method('getBillingAddress')->with()->willReturn($addressMock);
+        $this->quoteMock->expects($this->any())->method('getBillingAddress')->with()->willReturn($addressMock);
 
         $this->quoteMock->expects($this->once())->method('setCustomerIsGuest')->with(true)->willReturnSelf();
         $this->quoteMock->expects($this->once())