magento-test/app/code/Magento/Customer/etc/frontend/events.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:Event/etc/events.xsd">
    <event name="controller_action_predispatch">
        <observer name="customer_visitor" instance="Magento\Customer\Observer\Visitor\InitByRequestObserver" />
    </event>
    <event name="controller_action_postdispatch">
        <observer name="customer_visitor" instance="Magento\Customer\Observer\Visitor\SaveByRequestObserver" />
    </event>
    <event name="customer_data_object_login">
        <observer name="customer_visitor" instance="Magento\Customer\Observer\Visitor\BindCustomerLoginObserver" />
    </event>
    <event name="customer_logout">
        <observer name="customer_visitor" instance="Magento\Customer\Observer\Visitor\BindCustomerLogoutObserver" />
        <observer name="customer_log_logout" instance="Magento\Customer\Observer\LogLastLogoutAtObserver" />
    </event>
    <event name="checkout_quote_destroy">
        <observer name="customer_visitor" instance="Magento\Customer\Observer\Visitor\BindQuoteDestroyObserver" />
    </event>
    <event name="customer_login">
        <observer name="customer_log_login" instance="Magento\Customer\Observer\LogLastLoginAtObserver" />
    </event>
    <event name="customer_customer_authenticated">
        <observer name="customer_password" instance="Magento\Customer\Observer\UpgradeCustomerPasswordObserver" />
        <observer name="customer_unlock" instance="Magento\Customer\Observer\CustomerLoginSuccessObserver" />
    </event>
</config>