Doctrine\Common\Proxy\ProxyGenerator::getProxyFileName PHP Method

    public function getProxyFileName($className, $baseDirectory = null)
    {
        $baseDirectory = $baseDirectory ?: $this->proxyDirectory;
        return rtrim($baseDirectory, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR . Proxy::MARKER . str_replace('\\', '', $className) . '.php';
    }

 /**
  * @param $className
  *
  * @return string
  */
 private function generateProxyClass($className)
 {
     $proxyClassName = 'Doctrine\\Tests\\Common\\Proxy\\MagicMethodProxy\\__CG__\\' . $className;
     if (class_exists($proxyClassName, false)) {
         return $proxyClassName;
     }
     $metadata = $this->getMock('Doctrine\\Common\\Persistence\\Mapping\\ClassMetadata');
     $metadata->expects($this->any())->method('getName')->will($this->returnValue($className));
     $metadata->expects($this->any())->method('getIdentifier')->will($this->returnValue(array('id')));
     $metadata->expects($this->any())->method('getReflectionClass')->will($this->returnValue(new ReflectionClass($className)));
     $metadata->expects($this->any())->method('isIdentifier')->will($this->returnCallback(function ($fieldName) {
         return 'id' === $fieldName;
     }));
     $metadata->expects($this->any())->method('hasField')->will($this->returnCallback(function ($fieldName) {
         return in_array($fieldName, array('id', 'publicField'));
     }));
     $metadata->expects($this->any())->method('hasAssociation')->will($this->returnValue(false));
     $metadata->expects($this->any())->method('getFieldNames')->will($this->returnValue(array('id', 'publicField')));
     $metadata->expects($this->any())->method('getIdentifierFieldNames')->will($this->returnValue(array('id')));
     $metadata->expects($this->any())->method('getAssociationNames')->will($this->returnValue(array()));
     $metadata->expects($this->any())->method('getTypeOfField')->will($this->returnValue('string'));
     $this->proxyGenerator->generateProxyClass($metadata, $this->proxyGenerator->getProxyFileName($className));
     require_once $this->proxyGenerator->getProxyFileName($className);
     return $proxyClassName;
 }