MAGETWO-37571: [TechDebt] Covered php code after new checkout implementation by unit tests

Author: okarpenko

app/code/Magento/Quote/Test/Unit/Model/QuoteManagementTest.php

@@ -725,6 +725,42 @@ public function testPlaceOrderIfCustomerIsGuest()
         $this->assertEquals($orderId, $service->placeOrder($cartId));
     }
 
+    /**
+     * @expectedException \Magento\Framework\Exception\CouldNotSaveException
+     */
+    public function testPlaceOrderIfAgreementsIsNotValid()
+    {
+        $this->agreementsValidatorMock->expects($this->once())->method('isValid')->willReturn(false);
+        
+        /** @var \PHPUnit_Framework_MockObject_MockObject|\Magento\Quote\Model\QuoteManagement $service */
+        $service = $this->getMock(
+            '\Magento\Quote\Model\QuoteManagement',
+            ['submit'],
+            [
+                'eventManager' => $this->eventManager,
+                'quoteValidator' => $this->quoteValidator,
+                'orderFactory' => $this->orderFactory,
+                'orderManagement' => $this->orderManagement,
+                'customerManagement' => $this->customerManagement,
+                'quoteAddressToOrder' => $this->quoteAddressToOrder,
+                'quoteAddressToOrderAddress' => $this->quoteAddressToOrderAddress,
+                'quoteItemToOrderItem' => $this->quoteItemToOrderItem,
+                'quotePaymentToOrderPayment' => $this->quotePaymentToOrderPayment,
+                'userContext' => $this->userContextMock,
+                'quoteRepository' => $this->quoteRepositoryMock,
+                'customerRepository' => $this->customerRepositoryMock,
+                'customerModelFactory' => $this->customerFactoryMock,
+                'dataObjectHelper' => $this->dataObjectHelperMock,
+                'storeManager' => $this->storeManagerMock,
+                'checkoutSession' => $this->checkoutSessionMock,
+                'customerSession' => $this->customerSessionMock,
+                'accountManagement' => $this->accountManagementMock,
+                'agreementsValidator' => $this->agreementsValidatorMock,
+            ]
+        );
+        $service->placeOrder(45);
+    }
+
     public function testPlaceOrder()
     {
         $cartId = 323;