AC-2457: Checkout Improvements

* Textual changes

Author: nvshivakumar

app/code/Magento/Checkout/Controller/Sidebar/UpdateItemQty.php

@@ -18,6 +18,9 @@
 use Magento\Framework\Json\Helper\Data;
 use Psr\Log\LoggerInterface;
 
+/**
+ * Class used to update item quantity.
+ */
 class UpdateItemQty extends Action implements HttpPostActionInterface
 {
     /**

app/code/Magento/Checkout/Test/Unit/Controller/Sidebar/UpdateItemQtyTest.php

@@ -19,6 +19,9 @@
 use PHPUnit\Framework\TestCase;
 use Psr\Log\LoggerInterface;
 
+/**
+ * Class used to execute test cases for update item quantity
+ */
 class UpdateItemQtyTest extends TestCase
 {
     /**
@@ -248,7 +251,7 @@ public function testExecuteWithException(): void
     /**
      * @return void
      */
-    public function testExecuteWithNonNumericItemQty(): void
+    public function testExecuteInvalidItemQty(): void
     {
         $error = [
             'success' => false,