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                <?php  | 
            
                            
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                namespace Tests\Cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Ds\Cache\CacheStorageInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Ds\Cache\Storage\MemcacheStorage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                error_reporting(E_ALL & ~E_STRICT & ~E_DEPRECATED);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Class MemcacheStorageTest  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package Tests\Cache  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class MemcacheStorageTest extends \PHPUnit\Framework\TestCase  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \DateInterval  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $ttl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \PHPUnit_Framework_MockObject_MockObject  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $memcacheMock;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \Memcached  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $memcacheStorage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Set up.  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function setUp()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->ttl = new \DateInterval('P1M'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->memcacheMock = $this->getMockBuilder('\Memcached')->getMock(); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->memcacheStorage = new MemcacheStorage($this->memcacheMock,'localhost',11211, $this->ttl);  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testAddServer()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $server = 'localhost';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $port = '11211';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheMock->expects($this->once())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->method('addServer') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->with(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($server),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($port)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheStorage->addServer($server, $port);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    public function testFlush()  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $delay = 10;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheMock->expects($this->once())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->method('flush') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->with(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($delay)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheStorage->flush($delay);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @dataProvider hasCacheProvider  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testHas($expected)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $key = 'key';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheMock->expects($this->once())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->method('get') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->with(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($key)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->willReturn($expected);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals($expected, $this->memcacheStorage->has($key));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function hasCacheProvider()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            [true],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            [false]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testSet()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $key = 'key';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $value = 'value';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $expires = 10;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheMock->expects($this->once())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->method('set') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->with(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($key),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($value),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($expires)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheStorage->set($key, $value, $expires);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                    public function testGet()  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $key = 'key';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheMock->expects($this->once())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->method('get') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->with(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($key)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheStorage->get($key);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                    public function testDelete()  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $key = 'key';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheMock->expects($this->once())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->method('delete') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->with(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->equalTo($key)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->memcacheStorage->delete($key);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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.