magento-test/app/code/Magento/Checkout/etc/frontend/sections.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:module:Magento_Customer:etc/sections.xsd">
    <action name="checkout/cart/add">
        <section name="cart"/>
        <section name="directory-data"/>
    </action>
    <action name="checkout/cart/delete">
        <section name="cart"/>
    </action>
    <action name="checkout/cart/updatePost">
        <section name="cart"/>
    </action>
    <action name="checkout/cart/updateItemOptions">
        <section name="cart"/>
    </action>
    <action name="checkout/cart/couponPost">
        <section name="cart"/>
    </action>
    <action name="checkout/cart/estimatePost">
        <section name="cart"/>
    </action>
    <action name="checkout/cart/estimateUpdatePost">
        <section name="cart"/>
    </action>
    <action name="checkout/onepage/saveOrder">
        <section name="cart"/>
        <section name="checkout-data"/>
        <section name="last-ordered-items"/>
    </action>
    <action name="checkout/sidebar/removeItem">
        <section name="cart"/>
    </action>
    <action name="checkout/sidebar/updateItemQty">
        <section name="cart"/>
    </action>
    <action name="rest/*/V1/carts/*/payment-information">
        <section name="cart"/>
        <section name="last-ordered-items"/>
    </action>
    <action name="rest/*/V1/guest-carts/*/payment-information">
        <section name="cart"/>
    </action>
    <action name="rest/*/V1/guest-carts/*/selected-payment-method">
        <section name="cart"/>
        <section name="checkout-data"/>
    </action>
    <action name="rest/*/V1/carts/*/selected-payment-method">
        <section name="cart"/>
        <section name="checkout-data"/>
    </action>
</config>