public function testAddValidatorNamespace()
{
$structure = new Structure();
$structure->addValidatorNamespace('\\Vendor\\Mongo\\Validator\\');
$reflectionClass = new \ReflectionClass($structure);
$property = $reflectionClass->getProperty('validatorNamespaces');
$property->setAccessible(true);
$namespaces = $property->getValue($structure);
$this->assertNotEquals(false, array_search('\\Vendor\\Mongo\\Validator', $namespaces));
}
