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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Doctrine\Tests\ORM\Functional\Ticket;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\ORM\LazyCriteriaCollection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\Tests\Models\Tweet\Tweet;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\Tests\Models\Tweet\User;  | 
            
                            
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                use Doctrine\Tests\OrmFunctionalTestCase;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\Common\Collections\Criteria;  | 
            
                            
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                class DDC3740Test extends OrmFunctionalTestCase  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /** @var Criteria */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private $criteria;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /** @var LazyCriteriaCollection */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private $lazyCriteriaCollection;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    protected function setUp(): void  | 
            
                            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->useModelSet('tweet'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        parent::setUp();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->criteria = new Criteria();  | 
            
                            
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                        $this->lazyCriteriaCollection = new LazyCriteriaCollection(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->em->getUnitOfWork()->getEntityPersister(Tweet::class),  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->criteria  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function testCountIsCached() : void  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $user  = new User();  | 
            
                            
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                        $user->name = "Caio";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $tweet = new Tweet();  | 
            
                            
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                        $tweet->content = 'I am a teapot!';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $user->addTweet($tweet);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->em->persist($user);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->em->persist($tweet);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->em->flush();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->em->clear();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertSame(1, $this->lazyCriteriaCollection->count());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertSame(1, $this->lazyCriteriaCollection->count());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertSame(1, $this->lazyCriteriaCollection->count());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function testCountIsCachedEvenWithZeroResult() : void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::assertSame(0, $this->lazyCriteriaCollection->count());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::assertSame(0, $this->lazyCriteriaCollection->count());  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                        self::assertSame(0, $this->lazyCriteriaCollection->count());  | 
            
            
                                                                        
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                                        
                                                                
            
                                    
            
            
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Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: