update test case, add comment

modules/cart/tests/src/Kernel/CartOrderRefreshTest.php

@@ -7,6 +7,7 @@ use Drupal\commerce_order\Entity\OrderTypeInterface;
 use Drupal\commerce_order\OrderRefresh;
 use Drupal\Component\Datetime\TimeInterface;
 use Drupal\Core\Session\AnonymousUserSession;
+use Prophecy\Argument;
 
 /**
  * Tests the order refresh process.
@@ -96,7 +97,10 @@ class CartOrderRefreshTest extends CartKernelTestBase {
     $time = $this->prophesize(TimeInterface::class);
     $time->getCurrentTime()->willReturn($current_time);
     $time = $time->reveal();
-    $order_refresh = new OrderRefresh($entity_type_manager, $chain_price_resolver, $user, $time);
+    $lock_backend = $this->prophesize('Drupal\Core\Lock\LockBackendInterface');
+    $lock_backend->lockMayBeAvailable(Argument::any())->willReturn(FALSE);
+    $lock_backend = $lock_backend->reveal();
+    $order_refresh = new OrderRefresh($entity_type_manager, $chain_price_resolver, $user, $time, $lock_backend);
     $order_refresh->addProcessor($this->container->get('commerce_order.availability_order_processor'));
 
     return $order_refresh;

modules/order/src/OrderRefresh.php

@@ -77,6 +77,8 @@ class OrderRefresh implements OrderRefreshInterface {
    *   The current user.
    * @param \Drupal\Component\Datetime\TimeInterface $time
    *   The time.
+   * @param \Drupal\Core\Lock\LockBackendInterface $lock_backend
+   *   The lock backend.
    */
   public function __construct(EntityTypeManagerInterface $entity_type_manager, ChainPriceResolverInterface $chain_price_resolver, AccountInterface $current_user, TimeInterface $time, LockBackendInterface $lock_backend) {
     $this->orderTypeStorage = $entity_type_manager->getStorage('commerce_order_type');