class UpdateScriptTestRequirements

class UpdateScriptTestRequirements {
    public function __construct(ConfigFactoryInterface $configFactory) {
    }
    
    /**
     * Implements hook_update_requirements().
     */
    public function update() : array {
        $requirements = [];
        // Set a requirements warning or error when the test requests it.
        $requirement_type = $this->configFactory
            ->get('update_script_test.settings')
            ->get('requirement_type');
        switch ($requirement_type) {
            case REQUIREMENT_WARNING:
                $requirements['update_script_test'] = [
                    'title' => 'Update script test',
                    'value' => 'Warning',
                    'description' => 'This is a requirements warning provided by the update_script_test module.',
                    'severity' => REQUIREMENT_WARNING,
                ];
                break;
            case REQUIREMENT_ERROR:
                $requirements['update_script_test'] = [
                    'title' => 'Update script test',
                    'value' => 'Error',
                    'description' => 'This is a (buggy description fixed in update_script_test_requirements_alter()) requirements error provided by the update_script_test module.',
                    'severity' => REQUIREMENT_ERROR,
                ];
                break;
        }
        return $requirements;
    }
    
    /**
     * Implements hook_update_requirements_alter().
     */
    public function updateAlter(array &$requirements) : void {
        if (isset($requirements['update_script_test']) && $requirements['update_script_test']['severity'] === REQUIREMENT_ERROR) {
            $requirements['update_script_test']['description'] = 'This is a requirements error provided by the update_script_test module.';
        }
    }

}