grav/tests/_support/Helper/Unit.php

<?php
namespace Helper;

use Codeception;

// here you can define custom actions
// all public methods declared in helper class will be available in $I

/**
 * Class Unit
 * @package Helper
 */
class Unit extends Codeception\Module
{
    /**
     * HOOK: used after configuration is loaded
     */
    public function _initialize()
    {
    }

    /**
     * HOOK: on every Actor class initialization
     */
    public function _cleanup()
    {
    }

    /**
     * HOOK: before suite
     *
     * @param array $settings
     */
    public function _beforeSuite($settings = [])
    {
    }

    /**
     * HOOK: after suite
     **/
    public function _afterSuite()
    {
    }

    /**
     * HOOK: before each step
     *
     * @param Codeception\Step $step*
     */
    public function _beforeStep(Codeception\Step $step)
    {
    }

    /**
     * HOOK: after each step
     *
     * @param Codeception\Step $step
     */
    public function _afterStep(Codeception\Step $step)
    {
    }

}