public function testFindRelativePath()
{
$config = new ResourceManager(new \Pimple(['rootpath' => PHPUNIT_WEBROOT, 'pathmanager' => new PlatformFileSystemPathFactory()]));
$rel = $config->findRelativePath(PHPUNIT_WEBROOT, PHPUNIT_WEBROOT . '/A/B');
$this->assertEquals('A/B/', $rel);
}