public function testPrepareDecryptAll()
 {
     $input = $this->getMock('Symfony\\Component\\Console\\Input\\InputInterface');
     $output = $this->getMock('Symfony\\Component\\Console\\Output\\OutputInterface');
     $this->decryptAllMock->expects($this->once())->method('prepare')->with($input, $output, 'user');
     $this->instance->prepareDecryptAll($input, $output, 'user');
 }