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Completed
Push — master ( 16915a...bf7eff )
by François
02:55
created

CacheTest::testMemcached()   A

↳ Parent: CacheTest

Complexity

Conditions 2
Paths 2

Size

Total Lines 13
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 1 Features 0
Metric Value
c 1
b 1
f 0
dl 0
loc 13
rs 9.4285
cc 2
eloc 9
nc 2
nop 0
1 
<?php
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/*

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * This file is part of the Bouncer package.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * (c) François Hodierne <[email protected]>

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * For the full copyright and license information, please view the LICENSE

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * file that was distributed with this source code.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Bouncer;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class CacheTest extends \PHPUnit_Framework_TestCase

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public function testMemcached()

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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      if (!class_exists('Memcached')) {

            


            
                                                                        
                            
            
                                    
            
            

                
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        $this->markTestSkipped('The Memcached extension is not available.');

            


            
                                                                        
                            
            
                                    
            
            

                
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        return;

            


            
                                                                        
                            
            
                                    
            
            

                
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      }

            


            
                                                                        
                            
            
                                    
            
            

                
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      $client = new \Memcached;

            


            
                                                                        
                            
            
                                    
            
            

                
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      $cache = new \Bouncer\Cache\Memcache(array('client' => $client));

            


            
                                                                        
                            
            
                                    
            
            

                
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      $bouncer = new \Bouncer\Bouncer(array('cache' => $cache));

            


            
                                                                        
                            
            
                                    
            
            

                
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      $this->assertInstanceOf('\\Bouncer\\Cache\\Memcache', $bouncer->getCache());

            


            
                                                                        
                            
            
                                    
            
            

                
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      $this->assertInstanceOf('\\Memcached', $bouncer->getCache()->getClient());

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

                            –
                            show
                        


                        

                                                                                        




    

        
            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
It seems like you code against a concrete implementation and not the interface Bouncer\Cache\CacheInterface as the method getClient() does only exist in the following implementations of said interface: Bouncer\Cache\Memcache, Bouncer\Cache\Redis.
                                                                                                                                                                                                        

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s take a look at an example:


interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}





In the above example, the authenticate() method works fine as long as you just pass
instances of MyUser. However, if you now also want to pass a different implementation
of User which does not have a getDisplayName() method, the code will break.




Available Fixes


  1. Change the type-hint for the parameter:
    

    class AuthSystem
{
    public function authenticate(MyUser $user) { /* ... */ }
}

    

    

    2. 

  2. Add an additional type-check:
    

    class AuthSystem
{
    public function authenticate(User $user)
    {
        if ($user instanceof MyUser) {
            $this->logger->info(/** ... */);
        }

        // or alternatively
        if ( ! $user instanceof MyUser) {
            throw new \LogicException(
                '$user must be an instance of MyUser, '
               .'other instances are not supported.'
            );
        }

    }
}

    

    

    3. 




 Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types
inside the if block in such a case.


  1. Add the method to the interface:
    

    interface User
{
    /** @return string */
    public function getPassword();

    /** @return string */
    public function getDisplayName();
}

    

    

    2. 



                        

                                                    

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