public function testGetExternalPath()
{
$this->publishedIoServiceMock->expects($this->once())->method('getExternalPath')->with('var/test/storage/images/path/file.png')->will($this->returnValue('path/file.png'));
self::assertEquals('path/file.png', $this->service->getExternalPath('var/test/storage/images/path/file.png'));
}