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