castopod/tests/_support/SessionTestCase.php

<?php namespace Tests\Support;

use CodeIgniter\Session\Handlers\ArrayHandler;
use CodeIgniter\Session\SessionInterface;
use CodeIgniter\Test\CIUnitTestCase;
use CodeIgniter\Test\Mock\MockSession;
use Config\Services;

class SessionTestCase extends CIUnitTestCase
{
    /**
     * @var SessionInterface
     */
    protected $session;

    public function setUp(): void
    {
        parent::setUp();

        $this->mockSession();
    }

    /**
     * Pre-loads the mock session driver into $this->session.
     *
     * @var string
     */
    protected function mockSession()
    {
        $config = config('App');
        $this->session = new MockSession(
            new ArrayHandler($config, '0.0.0.0'),
            $config,
        );
        Services::injectMock('session', $this->session);
    }
}