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                <?php  | 
            
                            
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                namespace ReddogsTest\Doctrine\Migrations;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Interop\Container\ContainerInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Migrations\Tools\Console\Command\GenerateCommand;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\ORM\EntityManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\DBAL\Migrations\Tools\Console\Command\StatusCommand as StatusMigrationsCommand;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Reddogs\Doctrine\Migrations\StatusCommand;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Reddogs\Doctrine\Migrations\CommandFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once __DIR__ . '/_files/TestCommandImplementation.php';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class CommandFactoryTest extends \PHPUnit_Framework_TestCase  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $factory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function setUp()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->factory = new CommandFactory();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function testCreateService()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $factory = $this->getMockBuilder(CommandFactory::class)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                        ->setMethods(['getMigrationsCommand'])  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                        ->getMock();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $generateCommand = new GenerateCommand();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $factory->expects($this->once())  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ->method('getMigrationsCommand') | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ->with($this->equalTo(TestCommandImplementation::class))  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ->will($this->returnValue($generateCommand));  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $container = $this->getMockBuilder(ContainerInterface::class)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                          ->setMethods(['get', 'has'])  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                          ->getMock();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $entityManager = $this->createMock(EntityManager::class);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $connection = $this->createMock(Connection::class);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $entityManager->expects($this->once())  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                      ->method('getConnection') | 
            
            
                                                                        
                            
            
                                    
            
            
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                                      ->will($this->returnValue($connection));  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $config = [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'doctrine' => [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'reddogs_doctrine_migrations' => [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'testmodule' => ['test']  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ]  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            ]  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $container->expects($this->at(0))  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                  ->method('get') | 
            
            
                                                                        
                            
            
                                    
            
            
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                                  ->with($this->equalTo('config')) | 
            
            
                                                                        
                            
            
                                    
            
            
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                                  ->will($this->returnValue($config));  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $container->expects($this->at(1))  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                  ->method('get') | 
            
            
                                                                        
                            
            
                                    
            
            
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                                  ->with($this->equalTo(EntityManager::class))  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                  ->will($this->returnValue($entityManager));  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $service = $factory->__invoke($container, TestCommandImplementation::class);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->assertInstanceOf(TestCommandImplementation::class, $service);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testGetMigrationsCommand()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertInstanceOf(StatusMigrationsCommand::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                $this->factory->getMigrationsCommand(StatusCommand::class));  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.