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                <?php  | 
            
                            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This software consists of voluntary contributions made by many individuals  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * and is licensed under the MIT license.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace ProxyManagerTest\Exception;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use PHPUnit_Framework_TestCase;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use ProxyManager\Exception\FileNotWritableException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Tests for {@see \ProxyManager\Exception\FileNotWritableException} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Marco Pivetta <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license MIT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @covers \ProxyManager\Exception\FileNotWritableException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @group Coverage  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class FileNotWritableExceptionTest extends PHPUnit_Framework_TestCase  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testFromInvalidMoveOperation()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $exception = FileNotWritableException::fromInvalidMoveOperation('/tmp/a', '/tmp/b'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertInstanceOf(FileNotWritableException::class, $exception);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertSame(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Could not move file "/tmp/a" to location "/tmp/b": either the source file is not readable,'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            . ' or the destination is not writable',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $exception->getMessage()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testFromNotWritableLocationWithNonFilePath()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $exception = FileNotWritableException::fromNonWritableLocation(__DIR__);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertInstanceOf(FileNotWritableException::class, $exception);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertSame(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Could not write to path "' . __DIR__ . '": exists and is not a file',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $exception->getMessage()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testFromNotWritableLocationWithNonWritablePath()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $path = sys_get_temp_dir() . '/' . uniqid('FileNotWritableExceptionTestNonWritable', true); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        mkdir($path, 0555);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $exception = FileNotWritableException::fromNonWritableLocation($path);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertInstanceOf(FileNotWritableException::class, $exception);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertSame(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Could not write to path "' . $path . '": exists and is not a file, is not writable',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $exception->getMessage()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function testFromNonExistingPath()  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $path = sys_get_temp_dir() . '/' . uniqid('FileNotWritableExceptionTestNonWritable', true); | 
            
            
                                                        
            
                                    
            
            
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                        $exception = FileNotWritableException::fromNonWritableLocation($path . '/foo');  | 
            
            
                                                        
            
                                    
            
            
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                        $this->assertInstanceOf(FileNotWritableException::class, $exception);  | 
            
            
                                                        
            
                                    
            
            
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                        $this->assertSame(  | 
            
            
                                                        
            
                                    
            
            
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                            'Could not write to path "' . $path . '/foo": path does not exist',  | 
            
            
                                                        
            
                                    
            
            
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                            $exception->getMessage()  | 
            
            
                                                        
            
                                    
            
            
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                        );  | 
            
            
                                                        
            
                                    
            
            
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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.