private void assert_properties_have_default_values(WeatherModel model)
{
Assert.Empty(model.AirTemperature.Items);
Assert.Empty(model.Humidity.Items);
Assert.False(model.IsWet);
Assert.Empty(model.Pressure.Items);
Assert.Empty(model.TrackTemperature.Items);
Assert.Empty(model.WindAngle.Items);
Assert.Empty(model.WindSpeed.Items);
}