public void When_receving_a_reading_then_it_is_saved_against_the_meter()
{
var sut = new MeterReadingTakenFeature();
var meter = new Meter(Mpxn.From("1234"));
sut.Handle(meter, 12.1m);
meter.LatestReading().Should().Be(12.1m);
}
public void When_receving_a_reading_then_MeterReadingSaved_is_published()
{
var publisher = Substitute.For <MessageContext>();
var sut = new MeterReadingTakenFeature();
sut.UseContext(publisher);
var meter = new Meter(Mpxn.From(1234));
sut.Handle(meter, 12.1m);
publisher.Received().Publish(Arg.Is <MeterReadingSaved>(x => x.Meter == "1234"));
}