magento-test/app/code/Magento/Paypal/Test/Mftf/ActionGroup/ConfigPayPalExpressCheckoutActionGroup.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
    <actionGroup name="ConfigPayPalExpressCheckoutActionGroup">
        <annotations>
            <description>Goes to the 'Configuration' page for 'Payment Methods'. Fills in the provided PayPal credentials and other details. Clicks on Save.</description>
        </annotations>
        <arguments>
            <argument name="credentials" defaultValue="_CREDS"/>
            <argument name="countryCode" type="string" defaultValue="us"/>
        </arguments>

        <amOnPage url="{{AdminConfigPaymentMethodsPage.url}}" stepKey="navigateToPaymentConfigurationPage"/>
        <waitForPageLoad stepKey="waitForPageLoad1"/>
        <click selector="{{PayPalExpressCheckoutConfigSection.configureBtn(countryCode)}}" stepKey="clickPayPalConfigureBtn"/>
        <waitForElementVisible selector="{{PayPalAdvancedSettingConfigSection.advancedSettingTab(countryCode)}}" stepKey="waitForAdvancedSettingTab"/>
        <fillField selector ="{{PayPalExpressCheckoutConfigSection.email(countryCode)}}" userInput="{{credentials.magento/paypal_express_checkout_us_business_account}}" stepKey="inputEmailAssociatedWithPayPalMerchantAccount"/>
        <selectOption selector ="{{PayPalExpressCheckoutConfigSection.apiMethod(countryCode)}}" userInput="API Signature" stepKey="inputAPIAuthenticationMethods"/>
        <fillField selector ="{{PayPalExpressCheckoutConfigSection.username(countryCode)}}" userInput="{{credentials.magento/paypal_express_checkout_us_api_username}}" stepKey="inputAPIUsername"/>
        <fillField selector ="{{PayPalExpressCheckoutConfigSection.password(countryCode)}}" userInput="{{credentials.magento/paypal_express_checkout_us_api_password}}" stepKey="inputAPIPassword"/>
        <fillField selector ="{{PayPalExpressCheckoutConfigSection.signature(countryCode)}}" userInput="{{credentials.magento/paypal_express_checkout_us_api_signature}}" stepKey="inputAPISignature"/>
        <selectOption selector ="{{PayPalExpressCheckoutConfigSection.sandboxMode(countryCode)}}" userInput="Yes" stepKey="enableSandboxMode"/>
        <selectOption selector="{{PayPalExpressCheckoutConfigSection.enableSolution(countryCode)}}" userInput="Yes" stepKey="enableSolution"/>
        <selectOption selector="{{PayPalExpressCheckoutConfigSection.enableInContext(countryCode)}}" userInput="Yes" stepKey="enableInContext"/>
        <waitForElementVisible selector="{{PayPalExpressCheckoutConfigSection.merchantID(countryCode)}}" stepKey="waitForMerchantIdField"/>
        <fillField selector ="{{PayPalExpressCheckoutConfigSection.merchantID(countryCode)}}" userInput="{{credentials.magento/paypal_express_checkout_us_merchant_id}}" stepKey="inputMerchantID"/>
        <!--Save configuration-->
        <click selector="{{AdminConfigSection.saveButton}}" stepKey="saveConfig"/>
    </actionGroup>
</actionGroups>