doctrine2/tests/Doctrine/Tests/ORM/Functional/ManyToManyBasicAssociationTest.php

<?php

namespace Doctrine\Tests\ORM\Functional;

use Doctrine\Tests\Models\CMS\CmsUser,
    Doctrine\Tests\Models\CMS\CmsGroup;

require_once __DIR__ . '/../../TestInit.php';

/**
 * Basic many-to-many association tests.
 * ("Working with associations")
 * 
 * @author robo
 */
class ManyToManyBasicAssociationTest extends \Doctrine\Tests\OrmFunctionalTestCase
{
    protected function setUp()
    {
        $this->useModelSet('cms');
        parent::setUp();
    }

    public function testUnsetManyToMany()
    {
        $user = $this->addCmsUserGblancoWithGroups(1);

        unset($user->groups[0]->users[0]); // inverse side
        unset($user->groups[0]); // owning side!

        $this->_em->flush();

        // Check that the link in the association table has been deleted
        $this->assertGblancoGroupCountIs(0);
    }

    public function testBasicManyToManyJoin()
    {
        $user = $this->addCmsUserGblancoWithGroups(1);
        $this->_em->clear();

        $this->assertEquals(0, $this->_em->getUnitOfWork()->size());

        $query = $this->_em->createQuery("select u, g from Doctrine\Tests\Models\CMS\CmsUser u join u.groups g");

        $result = $query->getResult();

        $this->assertEquals(2, $this->_em->getUnitOfWork()->size());
        $this->assertTrue($result[0] instanceof CmsUser);
        $this->assertEquals('Guilherme', $result[0]->name);
        $this->assertEquals(1, $result[0]->getGroups()->count());
        $groups = $result[0]->getGroups();
        $this->assertEquals('Developers_0', $groups[0]->getName());

        $this->assertEquals(\Doctrine\ORM\UnitOfWork::STATE_MANAGED, $this->_em->getUnitOfWork()->getEntityState($result[0]));
        $this->assertEquals(\Doctrine\ORM\UnitOfWork::STATE_MANAGED, $this->_em->getUnitOfWork()->getEntityState($groups[0]));

        $this->assertTrue($groups instanceof \Doctrine\ORM\PersistentCollection);
        $this->assertTrue($groups[0]->getUsers() instanceof \Doctrine\ORM\PersistentCollection);

        $groups[0]->getUsers()->clear();
        $groups->clear();

        $this->_em->flush();
        $this->_em->clear();

        $query = $this->_em->createQuery("select u, g from Doctrine\Tests\Models\CMS\CmsUser u join u.groups g");
        $this->assertEquals(0, count($query->getResult()));
    }
    
    public function testManyToManyAddRemove()
    {
        $user = $this->addCmsUserGblancoWithGroups(2);
        $this->_em->clear();
        
        $uRep = $this->_em->getRepository(get_class($user));
    
        // Get user
        $user = $uRep->findOneById($user->getId());

        $this->assertNotNull($user, "Has to return exactly one entry.");

        $this->assertFalse($user->getGroups()->isInitialized());
        
        // Check groups
        $this->assertEquals(2, $user->getGroups()->count());
    
        $this->assertTrue($user->getGroups()->isInitialized());
        
        // Remove first group
        unset($user->groups[0]);
        //$user->getGroups()->remove(0);
    
        $this->_em->flush();
        $this->_em->clear();
    
        // Reload same user
        $user2 = $uRep->findOneById($user->getId());
    
        // Check groups
        $this->assertEquals(1, $user2->getGroups()->count());        
    }
    
    public function testManyToManyInverseSideIgnored()
    {
        $user = $this->addCmsUserGblancoWithGroups(0);
        
        $group = new CmsGroup;
        $group->name = 'Humans';
        
        // modify directly, addUser() would also (properly) set the owning side
        $group->users[] = $user;
        
        $this->_em->persist($user);
        $this->_em->persist($group);
        $this->_em->flush();
        $this->_em->clear();
        
        // Association should not exist
        $user2 = $this->_em->find(get_class($user), $user->getId());

        $this->assertNotNull($user2, "Has to return exactly one entry.");
        $this->assertEquals(0, $user2->getGroups()->count());
    }

    public function testManyToManyCollectionClearing()
    {
        $user = $this->addCmsUserGblancoWithGroups($groupCount = 10);

        // Check that there are indeed 10 links in the association table
        $this->assertGblancoGroupCountIs($groupCount);

        $user->groups->clear();

        $this->_em->flush();

        // Check that the links in the association table have been deleted
        $this->assertGblancoGroupCountIs(0);
    }

    public function testManyToManyCollectionClearAndAdd()
    {
        $user = $this->addCmsUserGblancoWithGroups($groupCount = 10);

        $groups = $user->groups->toArray();
        $user->groups->clear();

        foreach ($groups AS $group) {
            $user->groups[] = $group;
        }

        $this->assertType('Doctrine\ORM\PersistentCollection', $user->groups);
        $this->assertTrue($user->groups->isDirty());
        
        $this->assertEquals($groupCount, count($user->groups), "There should be 10 groups in the collection.");
        
        $this->_em->flush();
        
        $this->assertGblancoGroupCountIs($groupCount);
    }

    /**
     * @param int $expectedGroupCount
     */
    public function assertGblancoGroupCountIs($expectedGroupCount)
    {
        $countDql = "SELECT count(g.id) FROM Doctrine\Tests\Models\CMS\CmsUser u JOIN u.groups g WHERE u.username = 'gblanco'";
        $this->assertEquals(
            $expectedGroupCount,
            $this->_em->createQuery($countDql)->getSingleScalarResult(),
            "Failed to verify that CmsUser with username 'gblanco' has a group count of 10 with a DQL count query."
        );
    }

    public function testRetrieveManyToManyAndAddMore()
    {
        $user = $this->addCmsUserGblancoWithGroups(2);

        $group = new CmsGroup();
        $group->name = 'Developers_Fresh';
        $this->_em->persist($group);
        $this->_em->flush();

        $this->_em->clear();

        /* @var $freshUser CmsUser */
        $freshUser = $this->_em->find('Doctrine\Tests\Models\CMS\CmsUser', $user->getId());
        $newGroup = new CmsGroup();
        $newGroup->setName('12Monkeys');
        $freshUser->addGroup($newGroup);

        $this->assertFalse($freshUser->groups->isInitialized(), "CmsUser::groups Collection has to be uninitialized for this test.");

        $this->_em->flush();

        $this->assertFalse($freshUser->groups->isInitialized(), "CmsUser::groups Collection has to be uninitialized for this test.");
        $this->assertEquals(3, count($freshUser->getGroups()));
        $this->assertEquals(3, count($freshUser->getGroups()->getSnapshot()), "Snapshot of CmsUser::groups should contain 3 entries.");
        
        $this->_em->clear();

        $freshUser = $this->_em->find('Doctrine\Tests\Models\CMS\CmsUser', $user->getId());
        $this->assertEquals(3, count($freshUser->getGroups()));
    }

    /**
     * @group DDC-130
     */
    public function testRemoveUserWithManyGroups()
    {
        $user = $this->addCmsUserGblancoWithGroups(2);
        $userId = $user->getId();

        $this->_em->remove($user);
        $this->_em->flush();

        $newUser = $this->_em->find(get_class($user), $userId);
        $this->assertNull($newUser);
    }

    /**
     * @group DDC-130
     */
    public function testRemoveGroupWithUser()
    {
        $user = $this->addCmsUserGblancoWithGroups(2);

        foreach ($user->getGroups() AS $group) {
            $this->_em->remove($group);
        }
        $this->_em->flush();
        $this->_em->clear();

        $newUser = $this->_em->find(get_class($user), $user->getId());
        $this->assertEquals(0, count($newUser->getGroups()));
    }

    public function testDereferenceCollectionDelete()
    {
        $user = $this->addCmsUserGblancoWithGroups(2);
        $user->groups = null;

        $this->_em->flush();
        $this->_em->clear();

        $newUser = $this->_em->find(get_class($user), $user->getId());
        $this->assertEquals(0, count($newUser->getGroups()));
    }

    /**
     * @param  int $groupCount
     * @return CmsUser
     */
    public function addCmsUserGblancoWithGroups($groupCount = 1)
    {
        $user = new CmsUser;
        $user->name = 'Guilherme';
        $user->username = 'gblanco';
        $user->status = 'developer';

        for ($i=0; $i < $groupCount; ++$i) {
            $group = new CmsGroup;
            $group->name = 'Developers_' . $i;
            $user->addGroup($group);
        }

        $this->_em->persist($user);
        $this->_em->flush();

        $this->assertNotNull($user->getId(), "User 'gblanco' should have an ID assigned after the persist()/flush() operation.");

        return $user;
    }
}