/**
  * @expectedException FormulaMedia_Validate_Exception
  */
 public function testFormulaInvalidaPorErroDeSintaxe()
 {
     $formula = '(Rc * 0.4) + (Se * 0.6) ()';
     $validator = new FormulaMedia_Validate_Formula(array('excludeToken' => NULL));
     $this->assertTrue($validator->isValid($formula));
 }