/**
     * @return mixed
     */
    public function getValue()
    {
        $filter = $this->getFilterChain();
        return $filter->filter($this->value);
    }

In case filter have filters Zend\Filter\File\Rename, Zend\Filter\File\LowerCase, Zend\Filter\File\UpperCase, each call getValue() call filters, and we have result is different from the expected. Following example

   $source = __DIR__ . '/_files/toRename.txt';
   $testSource = __DIR__ . '/_files/_toRename.txt';
   if (!file_exists($testSource))
      copy($source, $testSource);

   $target = __DIR__ . '/_files/renamed.txt';


   $input = new Input('foo');

   $input->setValue($testSource);

   $filter = new Filter\File\Rename(
      array('target' => $target, 'overwrite' => true)
   );
   $input->getFilterChain()->attach($filter);

   $this->assertEquals($target, $input->getValue()); //Pass
   $this->assertEquals($target, $input->getValue()); //Fail

   if ($input->isValid()) //call $input->GetValue()
     $value = $input->getValue() // result is different from the expected