AC-1479: Incorrect qty to ship after few creditmemos

Fix static and Integration test

Author: sumesh-GL

app/code/Magento/Sales/Test/Unit/Model/Order/ItemTest.php

@@ -18,9 +18,9 @@
 
 /**
  * Unit test for order item class.
- * 
- * @suppressWarnings(PHPMD.TooManyPublicMethods)
+ *
  * @suppressWarnings(PHPMD.CouplingBetweenObjects)
+ * @suppressWarnings(PHPMD.ExcessivePublicCount)
  */
 class ItemTest extends TestCase
 {

dev/tests/integration/testsuite/Magento/Sales/Model/Order/ItemTest.php

@@ -89,19 +89,19 @@ public static function getProductOptionsDataProvider()
         DataFixture(InvoiceFixture::class, ['order_id' => '$order.id$'], 'invoice'),
         DataFixture(
             ShipmentFixture::class,
-            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 1]]]
+            ['order_id' => '$order.id$', 'items' => [['sku' => '$product.sku$', 'qty' => 1]]]
         ),
         DataFixture(
             CreditmemoFixture::class,
-            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 2]]]
+            ['order_id' => '$order.id$', 'items' => [['sku' => '$product.sku$', 'qty' => 2]]]
         ),
         DataFixture(
             ShipmentFixture::class,
-            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 1]]]
+            ['order_id' => '$order.id$', 'items' => [['sku' => '$product.sku$', 'qty' => 1]]]
         ),
         DataFixture(
             CreditmemoFixture::class,
-            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 2]]]
+            ['order_id' => '$order.id$', 'items' => [['sku' => '$product.sku$', 'qty' => 2]]]
         )
     ]
     public function testGetSimpleQtyToShip()