public IProcessManager SetupManager()
{
config = new Mock <IFFmpegConfig>();
var parser = new FFmpegParser();
var factory = new FakeProcessFactory();
var fileSystem = Mock.Of <FakeFileSystemService>(x =>
x.Exists(It.IsAny <string>()) == true && x.Exists(MissingFileName) == false);
return(new ProcessManager(config.Object, parser, factory, fileSystem));
}