MAGETWO-70885: [SOAP] The 'incrementId' property of the order with state 'complete' is increased after order status update

- Added api-functional test;

Author: Aliaksei Yakimovich2

dev/tests/api-functional/testsuite/Magento/Sales/Service/V1/OrderUpdateTest.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Sales\Service\V1;
+
+use Magento\TestFramework\TestCase\WebapiAbstract;
+use Magento\Sales\Api\Data\OrderInterface;
+
+/**
+ * Test order updating via webapi
+ */
+class OrderUpdateTest extends WebapiAbstract
+{
+    const RESOURCE_PATH = '/V1/orders';
+
+    const SERVICE_NAME = 'salesOrderRepositoryV1';
+
+    const SERVICE_VERSION = 'V1';
+
+    const ORDER_INCREMENT_ID = '100000001';
+
+    /**
+     * @var \Magento\Framework\ObjectManagerInterface
+     */
+    protected $objectManager;
+
+    /**
+     * @inheritDoc
+     */
+    protected function setUp()
+    {
+        $this->objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
+    }
+
+    /**
+     * Check order increment id after updating via webapi
+     *
+     * @magentoApiDataFixture Magento/Sales/_files/order.php
+     */
+    public function testOrderUpdate()
+    {
+        /** @var \Magento\Sales\Model\Order $order */
+        $order = $this->objectManager->get(\Magento\Sales\Model\Order::class)
+            ->loadByIncrementId(self::ORDER_INCREMENT_ID);
+
+        $entityData = [
+            OrderInterface::ENTITY_ID => $order->getId(),
+            OrderInterface::STATE => 'processing',
+            OrderInterface::STATUS => 'processing'
+        ];
+        $requestData = ['entity' => $entityData];
+
+        $serviceInfo = [
+            'rest' => [
+                'resourcePath' => '/V1/orders',
+                'httpMethod' => \Magento\Framework\Webapi\Rest\Request::HTTP_METHOD_POST,
+            ],
+            'soap' => [
+                'service' => self::SERVICE_NAME,
+                'serviceVersion' => self::SERVICE_VERSION,
+                'operation' => self::SERVICE_NAME . 'save',
+            ],
+        ];
+        $result = $this->_webApiCall($serviceInfo, $requestData);
+        $this->assertGreaterThan(1, count($result));
+
+        /** @var \Magento\Sales\Model\Order $actualOrder */
+        $actualOrder = $this->objectManager->get(\Magento\Sales\Model\Order::class)->load($order->getId());
+        $this->assertEquals(
+            $order->getData(OrderInterface::INCREMENT_ID),
+            $actualOrder->getData(OrderInterface::INCREMENT_ID)
+        );
+    }
+}