public void SetUp()
{
_fileSystem = new Common.FileSystem.FileSystem();
_temporaryDirectory = new TemporaryDirectory();
_absoluteFilePath = _temporaryDirectory.GetRandomFilePath();
_relativeFilePath = Path.GetRelativePath(_temporaryDirectory.Path, _absoluteFilePath);
File.WriteAllText(_absoluteFilePath, string.Empty);
_absoluteDirectoryPath = _temporaryDirectory.GetRandomDirectoryPath();
_relativeDirectoryPath = Path.GetRelativePath(_temporaryDirectory.Path, _absoluteDirectoryPath);
Directory.CreateDirectory(_absoluteDirectoryPath);
}