<?php namespace PhpOffice\PhpSpreadsheetTests\Helper; use PhpOffice\PhpSpreadsheet\Helper\Migrator; class MigratorTest extends \PHPUnit_Framework_TestCase { public function testMappingOnlyContainExistingClasses() { $migrator = new Migrator(); foreach ($migrator->getMapping() as $classname) { if (substr_count($classname, '\\')) { $this->assertTrue(class_exists($classname) || interface_exists($classname), 'mapping is wrong, class does not exists in project: ' . $classname); } } } }