magento-test/app/code/Magento/Checkout/etc/frontend/di.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Framework\Url\SecurityInfo">
        <arguments>
            <argument name="secureUrlList" xsi:type="array">
                <item name="checkout_index" xsi:type="string">/checkout</item>
            </argument>
            <argument name="excludedUrlList" xsi:type="array">
                <item name="checkout_sidebar" xsi:type="string">/checkout/sidebar</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Framework\View\Layout">
        <plugin name="checkout-session-depersonalize"
                type="Magento\Checkout\Model\Layout\DepersonalizePlugin" sortOrder="20"/>
    </type>
    <type name="Magento\Customer\CustomerData\SectionPoolInterface">
        <arguments>
            <argument name="sectionSourceMap" xsi:type="array">
                <item name="cart" xsi:type="string">Magento\Checkout\CustomerData\Cart</item>
                <item name="directory-data" xsi:type="string">Magento\Checkout\CustomerData\DirectoryData</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Customer\Block\SectionConfig">
        <arguments>
            <argument name="clientSideSections" xsi:type="array">
                <item name="checkout-data" xsi:type="string">checkout-data</item>
                <item name="cart-data" xsi:type="string">cart-data</item>
            </argument>
        </arguments>
    </type>
    <preference for="Magento\Checkout\CustomerData\ItemPoolInterface"
                type="Magento\Checkout\CustomerData\ItemPool"/>
    <type name="Magento\Checkout\CustomerData\ItemPool">
        <arguments>
            <argument name="defaultItemId" xsi:type="string">Magento\Checkout\CustomerData\DefaultItem</argument>
        </arguments>
    </type>
    <type name="Magento\Checkout\Model\CompositeConfigProvider">
        <arguments>
            <argument name="configProviders" xsi:type="array">
                <item name="checkout_default_config_provider" xsi:type="object">Magento\Checkout\Model\DefaultConfigProvider</item>
                <item name="checkout_summary_config_provider" xsi:type="object">Magento\Checkout\Model\Cart\CheckoutSummaryConfigProvider</item>
                <item name="checkout_payment_provider" xsi:type="object">Magento\Checkout\Model\PaymentCaptchaConfigProvider</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Checkout\Block\Onepage">
        <arguments>
            <argument name="layoutProcessors" xsi:type="array">
                <item name="addressFormAttributes" xsi:type="object">Magento\Checkout\Block\Checkout\LayoutProcessor</item>
                <item name="totalsSortOrder" xsi:type="object">Magento\Checkout\Block\Checkout\TotalsProcessor</item>
                <item name="directoryData" xsi:type="object">Magento\Checkout\Block\Checkout\DirectoryDataProcessor</item>
            </argument>
            <argument name="serializer" xsi:type="object">Magento\Framework\Serialize\Serializer\JsonHexTag</argument>
        </arguments>
    </type>
    <type name="Magento\Checkout\Block\Cart\Totals">
        <arguments>
            <argument name="layoutProcessors" xsi:type="array">
                <item name="totalsSortOrder" xsi:type="object">Magento\Checkout\Block\Cart\CartTotalsProcessor</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Checkout\Block\Cart\Shipping">
        <arguments>
            <argument name="layoutProcessors" xsi:type="array">
                <item name="addressFormAttributes" xsi:type="object">Magento\Checkout\Block\Cart\LayoutProcessor</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Checkout\Model\Cart\RequestInfoFilter">
        <arguments>
            <argument name="filterList" xsi:type="array">
                <item name="form_key" xsi:type="string">form_key</item>
                <item name="custom_price" xsi:type="string">custom_price</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Framework\View\Element\Message\MessageConfigurationsPool">
        <arguments>
            <argument name="configurationsMap" xsi:type="array">
                <item name="addCartSuccessMessage" xsi:type="array">
                    <item name="renderer" xsi:type="const">\Magento\Framework\View\Element\Message\Renderer\BlockRenderer::CODE</item>
                    <item name="data" xsi:type="array">
                        <item name="template" xsi:type="string">Magento_Checkout::messages/addCartSuccessMessage.phtml</item>
                    </item>
                </item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Quote\Model\Quote">
        <plugin name="clear_addresses_after_product_delete" type="Magento\Checkout\Plugin\Model\Quote\ResetQuoteAddresses"/>
    </type>
    <type name="Magento\Captcha\CustomerData\Captcha">
        <arguments>
            <argument name="formIds" xsi:type="array">
                <item name="payment_processing_request" xsi:type="string">payment_processing_request</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Store\Model\StoreSwitcher\RedirectDataPreprocessorComposite">
        <arguments>
            <argument name="processors" xsi:type="array">
                <item name="checkout_session" xsi:type="object">Magento\Checkout\Model\StoreSwitcher\RedirectDataPreprocessor</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Store\Model\StoreSwitcher\RedirectDataPostprocessorComposite">
        <arguments>
            <argument name="processors" xsi:type="array">
                <item name="checkout_session" xsi:type="object">Magento\Checkout\Model\StoreSwitcher\RedirectDataPostprocessor</item>
            </argument>
        </arguments>
    </type>
</config>