Cover changes with mftf test

Author: Nazar65

app/code/Magento/Customer/Test/Mftf/Test/StorefrontUpdateCustomerAddressBelgiumTest.xml

@@ -47,5 +47,13 @@
         <actionGroup ref="VerifyCustomerShippingAddressWithState" stepKey="verifyShippingAddress">
             <argument name="address" value="updateCustomerBelgiumAddress"/>
         </actionGroup>
+
+        <!-- Verify country Belgium can be saved without state as state not required -->
+        <actionGroup ref="StoreFrontClickEditDefaultShippingAddressActionGroup" stepKey="clickOnDefaultShippingAddress"/>
+        <selectOption selector="{{StorefrontCustomerAddressFormSection.country}}" userInput="Belgium" stepKey="selectCountry"/>
+        <selectOption selector="{{StorefrontCustomerAddressFormSection.state}}" userInput="Please select a region, state or province." stepKey="selectState"/>
+        <actionGroup ref="AdminSaveCustomerAddressActionGroup" stepKey="saveAddress"/>
+        <see selector="{{StorefrontCustomerAddressesSection.defaultShippingAddress}}" userInput="Belgium" stepKey="seeAssertCustomerDefaultShippingAddressCountry"/>
+
     </test>
 </tests>