public void GetAverageReading()
{
var location = "London";
var testReadings = new List<Reading>();
testReadings.Add(new Reading { Location = location, WeatherSourceName = "BBC Weather", TemperatureValue = 10.0, TemperatureUnit = TemperatureUnit.Celsius, WindSpeedValue = 8.0, WindSpeedUnit = WindSpeedUnit.Kph });
testReadings.Add(new Reading { Location = location, WeatherSourceName = "Accu Weather", TemperatureValue = 68.0, TemperatureUnit = TemperatureUnit.Fahrenheit, WindSpeedValue = 10.0, WindSpeedUnit = WindSpeedUnit.Mph });
Mock<IWeatherProvider> mockWeatherProvider = new Mock<IWeatherProvider>();
mockWeatherProvider.Setup(x => x.GetAllReadings(It.IsAny<string>(), It.IsAny<List<WeatherSource>>())).ReturnsAsync(testReadings);
var testSettings = TestHelpers.SetupDefaultSettings();
Mock<IRepository> mockRepository = new Mock<IRepository>();
mockRepository.Setup(x => x.LoadSettings(It.IsAny<string>())).Returns(testSettings);
IUnitConverter unitConverter = new UnitConverter();
var homeController = new HomeController(mockRepository.Object, mockWeatherProvider.Object, unitConverter);
//Given temperatures of 10c from bbc and 68f from accuweather when searching then display either 15c or 59f (the average).
var weatherForecast1 = new WeatherForecast { Readings = testReadings, TemperatureUnit = TemperatureUnit.Celsius, WindSpeedUnit = WindSpeedUnit.Kph };
homeController.EvaluateAverageReading(weatherForecast1);
weatherForecast1.AverageTemperature.Should().BeApproximately(15, 0.001);
weatherForecast1.AverageWindSpeed.Should().BeApproximately(12, 0.001);
// Given wind speeds of 8kph from bbc and 10mph from accuweather when searching then display either 12kph or 7.5mph (the average).
var weatherForecast2 = new WeatherForecast { Readings = testReadings, TemperatureUnit = TemperatureUnit.Fahrenheit, WindSpeedUnit = WindSpeedUnit.Mph };
homeController.EvaluateAverageReading(weatherForecast2);
weatherForecast2.AverageTemperature.Should().BeApproximately(59, 0.001);
weatherForecast2.AverageWindSpeed.Should().BeApproximately(7.5, 0.001);
}
public void EvaluateAverageReading(WeatherForecast weatherForecast)
{
if (weatherForecast.Readings.Count == 0) return;
weatherForecast.AverageTemperature = weatherForecast.AverageWindSpeed = 0.0;
foreach (var reading in weatherForecast.Readings)
{
double temperatureValue = _unitConverter.Convert(reading.TemperatureValue, reading.TemperatureUnit, weatherForecast.TemperatureUnit);
double windSpeedValue = _unitConverter.Convert(reading.WindSpeedValue, reading.WindSpeedUnit, weatherForecast.WindSpeedUnit);
if (!double.IsNaN(temperatureValue)) weatherForecast.AverageTemperature += temperatureValue;
if (!double.IsNaN(windSpeedValue)) weatherForecast .AverageWindSpeed += windSpeedValue;
}
weatherForecast.AverageTemperature /= weatherForecast.Readings.Count;
weatherForecast.AverageWindSpeed /= weatherForecast.Readings.Count;
}
public async Task<ActionResult> WeatherForecast(WeatherForecast weatherForecast)
{
if (weatherForecast != null && !string.IsNullOrWhiteSpace(weatherForecast.Location))
{
var rootFolder = Server.MapPath("~/App_Data");
var settings = _repository.LoadSettings(rootFolder);
try
{
weatherForecast.Readings = await _weatherProvider.GetAllReadings(weatherForecast.Location, settings.WeatherSources);
EvaluateAverageReading(weatherForecast);
}
catch (Exception ex)
{
LoggerManager.WriteError(_thisClass, ex.Message);
}
}
return View(weatherForecast);
}
