public IEnumerable<ConfigProfile> GetSavedProfiles(string product)
    {
        if(string.IsNullOrEmpty(product))
        {
            throw new ArgumentNullException("product");
        }

        string profileDirectory = _factory.GetCustomProfileDirectory(product);
        List<ConfigProfile> profiles = Enumerable.Empty<ConfigProfile>().ToList();

        _logger.Debug("Getting Saved profiles.");

        IList<FileInfo> files = GetProfilesInDirectory(profileDirectory).ToList();

        if (!files.Any())
        {
            _logger.Debug(string.Format("No custom profiles found for {0}.", product));
            return profiles;
        }

        profiles.AddRange(files.Select(LoadProfile));

        return profiles;

    }

protected virtual IEnumerable<FileInfo> GetProfilesInDirectory(string directory)
    {
        DirectoryInfo files = new DirectoryInfo(directory);

        return files.EnumerateFiles("*.ecu");
    }

protected virtual ConfigProfile LoadProfile(FileInfo file)
    {
        ConfigProfile profile;
        using (FileStream stream = new FileStream(file.FullName, FileMode.Open))
        {
            profile = _serializer.DeserializeFromDisk(stream);
        }
        return profile;
    }

public IDirectoryInfoWrap GetDirectoryInfoWrapper(string product)
{
    if(string.IsNullOrEmpty(product))
    {
        throw new ArgumentNullException("product");
    }

    string profileDirectory = _factory.GetCustomProfileDirectory(product);
    return new DirectoryInfoWrap(profileDirectory);
}

public IList<FileInfo> GetProfileFiles(IDirectoryInfoWrap di)
{
    _logger.Debug("Getting Saved profiles.");

    // NOTE:  EnumerateFiles is not in the SystemWrapper so you will have to use an alternative
    IList<FileInfo> files = di.EnumerateFiles("*.ecu").ToList();
    return files;
 }

// Left for you to do...refactor in a manner so that FileSystem is using the IFileSystemWrap
public IEnumerable<ConfigProfile> GetSavedProfiles(IList<FileInfo> files)
{
    List<ConfigProfile> profiles = Enumerable.Empty<ConfigProfile>().ToList();
    if (!files.Any())
    {
        _logger.Debug(string.Format("No custom profiles found for {0}.", product));
        return profiles;
    }

    profiles.AddRange(files.Select(LoadProfile));

    return profiles;

}