AC-15108: fix integration test faliure

Author: shashi011

app/code/Magento/Quote/Test/Unit/Helper/CartItemExtensionTestHelper.php

@@ -19,6 +19,16 @@ class CartItemExtensionTestHelper implements CartItemExtensionInterface
      */
     private $negotiableQuoteItem;
 
+    /**
+     * @var \Magento\SalesRule\Api\Data\RuleDiscountInterface[]|null
+     */
+    private $discounts;
+
+    /**
+     * @var \Magento\User\Api\Data\UserInterface|null
+     */
+    private $quoteItemTestAttribute;
+
     /**
      * Get negotiable quote item
      *
@@ -40,4 +50,48 @@ public function setNegotiableQuoteItem($negotiableQuoteItem)
         $this->negotiableQuoteItem = $negotiableQuoteItem;
         return $this;
     }
+
+    /**
+     * Get discounts
+     *
+     * @return \Magento\SalesRule\Api\Data\RuleDiscountInterface[]|null
+     */
+    public function getDiscounts()
+    {
+        return $this->discounts;
+    }
+
+    /**
+     * Set discounts
+     *
+     * @param \Magento\SalesRule\Api\Data\RuleDiscountInterface[]|null $discounts
+     * @return $this
+     */
+    public function setDiscounts($discounts)
+    {
+        $this->discounts = $discounts;
+        return $this;
+    }
+
+    /**
+     * Get quote item test attribute
+     *
+     * @return \Magento\User\Api\Data\UserInterface|null
+     */
+    public function getQuoteItemTestAttribute()
+    {
+        return $this->quoteItemTestAttribute;
+    }
+
+    /**
+     * Set quote item test attribute
+     *
+     * @param \Magento\User\Api\Data\UserInterface|null $quoteItemTestAttribute
+     * @return $this
+     */
+    public function setQuoteItemTestAttribute($quoteItemTestAttribute)
+    {
+        $this->quoteItemTestAttribute = $quoteItemTestAttribute;
+        return $this;
+    }
 }