public void LoadSecurities(string fileName, string source)
        {
            var fileLocation = string.Concat(_filePath, fileName);

            _validFileInfo = new ValidFileInfo(fileLocation, source, FileTypes.Xml);
            Task <TimeSeries> result = _dataLoader.LoadData(_validFileInfo);

            result.Wait();

            var list = result.Result.ToList();

            Assert.Greater(list.Count, 0);
        }