public function testSetUpConstraintsEmpty()
{
$constraints = array();
$model = new EloquentStub();
$this->config->shouldReceive('getDataModel')->once()->andReturn($model);
$this->validator->shouldReceive('arrayGet')->once()->andReturn($constraints);
$options = array();
$this->field->setUpConstraints($options);
$this->assertTrue(!isset($options['constraints']));
}