Convert OnePageCheckoutJsValidationTest to MFTF

Author: rogyar

app/code/Magento/Checkout/Test/Mftf/Test/StorefrontOnePageCheckoutJsValidationTest.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
+    <test name="StorefrontOnePageCheckoutJsValidationTest">
+        <annotations>
+            <features value="Checkout"/>
+            <title value="Js validation error messages must be absent for required fields after checkout start."/>
+            <description value="Js validation error messages must be absent for required fields after checkout start."/>
+            <group value="shoppingCart"/>
+            <group value="mtf_migrated"/>
+        </annotations>
+        <before>
+            <createData entity="_defaultCategory" stepKey="createCategory"/>
+            <createData entity="ApiSimpleProduct" stepKey="createProduct">
+                <requiredEntity createDataKey="createCategory"/>
+            </createData>
+            <actionGroup ref="AddSimpleProductToCart" stepKey="addToCartFromStorefrontProductPage">
+                <argument name="product" value="$$createProduct$$"/>
+            </actionGroup>
+            <actionGroup ref="GoToCheckoutFromMinicartActionGroup" stepKey="guestGoToCheckoutFromMinicart"/>
+            <waitForPageLoad stepKey="waitForCheckoutPage"/>
+        </before>
+        <after>
+            <deleteData createDataKey="createCategory" stepKey="deleteCategory"/>
+            <deleteData createDataKey="createProduct" stepKey="deleteProduct"/>
+        </after>
+
+        <dontSeeElement selector="div .field-error" stepKey="dontSeeValidationErrors"/>
+    </test>
+</tests>

dev/tests/functional/tests/app/Magento/Checkout/Test/TestCase/OnePageCheckoutJsValidationTest.xml

@@ -12,6 +12,7 @@
             <data name="tag" xsi:type="string">severity:S2</data>
             <data name="products/0" xsi:type="string">catalogProductSimple::default</data>
             <data name="checkoutMethod" xsi:type="string">guest</data>
+            <data name="tag" xsi:type="string">mftf_migrated:yes</data>
             <constraint name="Magento\Checkout\Test\Constraint\AssertShippingAddressJsValidationMessagesIsAbsent" />
         </variation>
     </testCase>