public function testInArrayValidator()
 {
     $element = new \Library\Form\Element\SelectSimple();
     $element->setValueOptions(array('option1', 'option2'));
     $factory = new \Zend\InputFilter\Factory();
     $input = $factory->createInput($element->getInputSpecification());
     $input->setValue('option1');
     $this->assertTrue($input->isValid());
     $input->setValue('option2');
     $this->assertTrue($input->isValid());
     $input->setValue('option3');
     $this->assertFalse($input->isValid());
 }