Plugin not executed in test

Question

I have a plugin that plugs into the execute method of \Magento\Checkout\Controller\Cart\Index and redirects under some condition.

di.xml:

<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Checkout\Controller\Cart\Index">
        <plugin sortOrder="1" name="do_stuff_with_cart" type="MyVendor\MyModule\Plugin\CartPlugin"/>
    </type>
</config>

The Plugin itself:

<?php

namespace MyVendor\MyModule\Plugin;

use MyVendor\MyModule\Helper\Data;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\ActionFlag;
use Magento\Framework\App\Response\RedirectInterface;
use Magento\Framework\Controller\ResultFactory;
use Magento\Framework\Event\Observer;
use Magento\Framework\Message\ManagerInterface;
use Magento\Framework\Pricing\Render;

class CartPlugin
{
    protected Data $helper;
    protected RedirectInterface $redirect;
    protected ResultFactory $resultFactory;

    public function __construct(
        Data $helper,
        RedirectInterface $redirect,
        \Magento\Framework\Controller\ResultFactory $resultFactory
    ) {
        $this->helper = $helper;
        $this->resultFactory = $resultFactory;
        $this->redirect = $redirect;
    }

    public function aroundExecute($subject, callable $proceed)
    {
        if ($this->helper->isEnabled()) {
            $resultRedirect = $this->resultFactory->create(ResultFactory::TYPE_REDIRECT);
            $resultRedirect->setPath('vendor/module/index');

            return $resultRedirect;
        }

        return $proceed();
    }
}

When I access the /checkout/index/ route locally in my dev environment, everything works as expected. However, this integration test fails:

<?php

namespace MyVendor\MyModule\Test\Integration;

use Magento\TestFramework\TestCase\AbstractController;

class FormTest extends AbstractController
{
    /**
     * @magentoConfigFixture current_store vendor/module/enabled 1
     */
    public function testShouldRedirectToForm()
    {
        $this->dispatch('checkout/cart/index');

        $this->assertRedirect($this->equalTo('vendor/module/index/'));
    }
}

I debugged into my plugin and it looks like the method is never called, even a die('HERE') in the aroundExecute method does not work. I've tried all the usual stuff (clearing cache, sandbox, generated) already.

When I dump $this->getResponse() in the test, it has a status code of 200 but the response content itself is empty.

EDIT: I've tried moving the plugin configuration from etc/frontend/di.xml to etc/di.xml with no success.

Answer 1

$request->setPathInfo('checkout/cart/index');

$this->dispatch($request);