<?php

class User {
    public function addGroup($group) {
        if (!$this->groups->contains($group)) {
            $this->groups[] = $group;
        }
    }
}

use Symfony\Component\Form\Extension\Core\CoreExtension;
use Symfony\Component\Form\FormFactory;
use Symfony\Component\Form\AbstractType;
use Doctrine\Common\Collections\ArrayCollection;

class MergeCollectionListenerTest_CarAxes
{
    private $axes;

    public function addAxis(MergeCollectionListenerTest_CarAxis $axis)
    {
        //we are not checking if it's already in collection on purpose
        //if (!$this->getAxes()->contains($axis)) {
            $this->getAxes()->add($axis);
            $axis->setCar($this);
        //}
    }

    public function removeAxis(MergeCollectionListenerTest_CarAxis $axis)
    {
        $this->getAxes()->removeElement($axis);
    }

    public function getAxes()
    {
        return $this->axes ?: $this->axes = new ArrayCollection();
    }
}

class MergeCollectionListenerTest_CarAxis
{
    private $car;

    public $prop1;
    public $prop2;

    public function setCar($car)
    {
        $this->car = $car;
    }

    public function getCar()
    {
        return $this->car;
    }
}

class MergeCollectionListenerTest_CarAxisType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder
            ->add('prop1', 'text')
            ->add('prop2', 'text')
        ;
    }

    public function getName()
    {
        return 'axis';
    }

    public function getDefaultOptions(array $options)
    {
        return array(
            'data_class' => __NAMESPACE__ .'\\MergeCollectionListenerTest_CarAxis',
        );
    }
}

    public function testDoubles()
    {
        $ff = new FormFactory(array(new CoreExtension()));

        $axes = new MergeCollectionListenerTest_CarAxes();
        $builder = $ff->createBuilder('form', $axes);
        $builder
            ->add('axes', 'collection', array(
                    'type'      => new MergeCollectionListenerTest_CarAxisType(),
                    'allow_add' => true,
                    'options'       => array( //FIXME we need the line below because of bug https://github.com/symfony/symfony/issues/3354
                        'data_class' => 'Symfony\Component\Form\Tests\Extension\Core\EventListener\MergeCollectionListenerTest_CarAxis',
                    )
                )
            )
        ;

        $builder
            ->getForm()
                ->bind(
                    array('axes' => array(
                        array('prop1' => '01', 'prop2' => '02'),
                        array('prop1' => '11', 'prop2' => '12'),
                    )
                )
        );

        $newAxis = function($prop1, $prop2) {
            $ret = new MergeCollectionListenerTest_CarAxis();
            $ret->prop1 = $prop1;
            $ret->prop2 = $prop2;

            return $ret;
        };

        $cmpAxes = new MergeCollectionListenerTest_CarAxes();
        $cmpAxes->addAxis($newAxis('01', '02'));
        $cmpAxes->addAxis($newAxis('11', '12'));

        $this->assertEquals($cmpAxes->getAxes()->count(), $axes->getAxes()->count());
        $this->assertEquals($cmpAxes, $axes);
    }