private WeatherInfo AggregateInternal(List<WeatherInfo> weatherInfos)
{
var weatherInfo = new WeatherInfo();
var existingWeatherInfos = weatherInfos.Where(p => p != null).ToList();
weatherInfo.Country = existingWeatherInfos.GetOneResult(info => info.Country != null, info => info.Country);
weatherInfo.Description = existingWeatherInfos.GetOneResult(info => info.Description != null, info => info.Description);
weatherInfo.Elevation = existingWeatherInfos.GetOneResult(info => info.Elevation != null, info => info.Elevation);
weatherInfo.RelativeHumidity = existingWeatherInfos.GetOneResult(info => info.RelativeHumidity != null, info => info.RelativeHumidity);
weatherInfo.WindDirection = existingWeatherInfos.GetOneResult(info => info.WindDirection != null, info => info.WindDirection);
var latititudes = existingWeatherInfos.GetMultipleResults(p => p.Latitude.HasValue, p => p.Latitude);
weatherInfo.Latitude = latititudes.Any() ? latititudes.Average() : null;
var longitudes = existingWeatherInfos.GetMultipleResults(p => p.Longitude.HasValue, p => p.Longitude);
weatherInfo.Longitude = longitudes.Any() ? longitudes.Average() : null;
var pressuresInMb = existingWeatherInfos.GetMultipleResults(p => p.PressureMb.HasValue, p => p.PressureMb);
weatherInfo.PressureMb = pressuresInMb.Any() ? MathExtensions.Floor(pressuresInMb.Average()) : null;
var temperaturesCelcius = existingWeatherInfos.GetMultipleResults(p => p.TemperatureCelcius.HasValue, p => p.TemperatureCelcius);
weatherInfo.TemperatureCelcius = temperaturesCelcius.Any() ? temperaturesCelcius.Average() : null;
var visibilityDistances = existingWeatherInfos.GetMultipleResults(p => p.VisibilityDistance.HasValue, p => p.VisibilityDistance);
weatherInfo.VisibilityDistance = visibilityDistances.Any() ? visibilityDistances.Average() : null;
var windAngles = existingWeatherInfos.GetMultipleResults(p => p.WindAngle.HasValue, p => p.WindAngle);
weatherInfo.WindAngle = windAngles.Any() ? MathExtensions.Floor(windAngles.Average()) : null;
var windSpeedsKph = existingWeatherInfos.GetMultipleResults(p => p.WindSpeedKph.HasValue, p => p.WindSpeedKph);
weatherInfo.WindSpeedKph = windSpeedsKph.Any() ? windSpeedsKph.Average() : null;
var windSpeedsMs = existingWeatherInfos.GetMultipleResults(p => p.WindSpeedMs.HasValue, p => p.WindSpeedMs);
weatherInfo.WindSpeedMs = windSpeedsMs.Any() ? windSpeedsMs.Average() : null;
return weatherInfo;
}
private void TestAverageValues(WeatherInfo aggregatedWeatherInfo)
{
Assert.AreEqual((Latitude1 + Latitude2)/2, aggregatedWeatherInfo.Latitude, delta);
Assert.AreEqual((Longitude1 + Longitude2)/2, aggregatedWeatherInfo.Longitude, delta);
Assert.AreEqual((PressureMb1 + PressureMb2)/2, aggregatedWeatherInfo.PressureMb, delta);
Assert.AreEqual((TemperatureCelcius1 + TemperatureCelcius2)/2, aggregatedWeatherInfo.TemperatureCelcius, delta);
Assert.AreEqual((VisibilityDistance1 + VisibilityDistance2)/2, aggregatedWeatherInfo.VisibilityDistance, delta);
Assert.AreEqual((WindAngle1 + WindAngle2)/2, aggregatedWeatherInfo.WindAngle, delta);
Assert.AreEqual((WindSpeedKph1 + WindSpeedKph2)/2, aggregatedWeatherInfo.WindSpeedKph, delta);
Assert.AreEqual((WindSpeedMs1 + WindSpeedMs2)/2, aggregatedWeatherInfo.WindSpeedMs, delta);
}