public function testExceptMultipleFieldSingleExcept()
{
$this->specify('Test except option as combination of fields and single value in uniqueness validator.', function () {
$validation = new Validation();
$validation->add(['type', 'year'], new Uniqueness(['except' => ['type' => 'mechanical', 'year' => 1972]]));
$messages = $validation->validate(null, $this->robot);
expect($messages->count())->equals(0);
$messages = $validation->validate(null, $this->anotherRobot);
expect($messages->count())->equals(0);
});
}