ProtectedPrivates.php

<?php

namespace Drupal\phpunit_example;


/**
 * A class with features to show how to do unit testing.
 *
 * This class has private and protected methods to demonstrate
 * how to test with reflection and mocking.
 *
 * protectedAdd() and privateAdd() are shim methods to AddClass::add().
 * We do this so we're concentrating on the testing instead of the
 * code being tested.
 *
 * @ingroup phpunit_example
 */
class ProtectedPrivates {
    
    /**
     * A simple addition method with validity checking.
     *
     * @param int|float $a
     *   A number to add.
     * @param int|float $b
     *   Another number to add.
     *
     * @return int|float
     *   The sum of $a and $b.
     *
     * @throws \InvalidArgumentException
     *   If either $a or $b is non-numeric, we can't add, so we throw.
     */
    protected function protectedAdd($a, $b) {
        $adder = new AddClass();
        return $adder->add($a, $b);
    }
    // phpcs:disable
    
    /**
     * A simple addition method with validity checking.
     *
     * @param int|float $a
     *   A number to add.
     * @param int|float $b
     *   Another number to add.
     *
     * @return int|float
     *   The sum of $a and $b.
     *
     * @throws \InvalidArgumentException
     *   If either $a or $b is non-numeric, we can't add, so we throw.
     */
    private function privateAdd($a, $b) {
        $adder = new AddClass();
        return $adder->add($a, $b);
    }
    // phpcs:enable

}