public void Aggregate_ReturnTheMaxOfTwoValues()
{
var reading1 = new Reading() { FeatureName = "test", Data = new MaxReadingData(1.1) };
var reading2 = new Reading() { FeatureName = "test", Data = new MaxReadingData(10.5) };
reading1.Data.Aggregate(reading2.Data);
Assert.That(reading1.Data.GetValue(), Is.EqualTo(10.5));
}
}