Laravel PHP Unit test private and protected variable or function

helpers.php

<?php

if (!function_exists('testShadow')) {
    /**
     * Magically access a private or protected variable or methods from an instance of a class.
     * Use this only in UnitTests
     *
     * @param mixed $instance Instance of a class
     * @param string $name Name of the inaccessible variable or method
     * @return mixed variable
     */
    function testShadow($instance, string $name, ...$args)
    {
        return (fn() => isset($this->$name) ? $this->$name : $this->$name(...$args))->call($instance);
    }
}


testShadow(new SomeClass, 'variableName');
testShadow(new SomeClass, 'methodName', 1, 2);