public function testAddSelect()
{
$builder = new FieldsBuilder('fields');
$builder->addSelect('colors', ['choices' => [['yellow' => 'Yellow']]])->addChoices(['red' => 'Rojo'], 'blue')->addChoice('green');
$expectedConfig = ['fields' => [['name' => 'colors', 'type' => 'select', 'choices' => ['yellow' => 'Yellow', 'red' => 'Rojo', 'blue' => 'blue', 'green' => 'green']]]];
$this->assertArraySubset($expectedConfig, $builder->build());
}