public void Throw_Error_When_Reusing_Grapes_In_Blend()
{
//Arrange
var originalName = new ChampagneName("Bollinger 2007");
var sut = new Champagne();
sut.Execute(new CreateChampagne(new AggregateId(Guid.NewGuid()), originalName));
sut.ClearUncommittedEvents();
var grapes = new[]
{
new GrapeBlend(new GrapeBlendPercentage(0.3), new GrapeVariety("PinotNoir")),
new GrapeBlend(new GrapeBlendPercentage(0.7), new GrapeVariety("PinotNoir")),
};
var cmd = new UpdateGrapeBlend(sut.Id, grapes);
//Act
Should.Throw <DomainError>(() =>
{
sut.Execute(cmd);
});
//Assert
sut.GetUncommittedEvents().Count().ShouldBe(0);
}
public void Record_GrapeBlendUpdated_When_Updating_Blend()
{
//Arrange
var originalName = new ChampagneName("Bollinger 2007");
var sut = new Champagne();
sut.Execute(new CreateChampagne(new AggregateId(Guid.NewGuid()), originalName));
sut.ClearUncommittedEvents();
var grapes = new[]
{
new GrapeBlend(new GrapeBlendPercentage(0.3), new GrapeVariety("PinotNoir")),
new GrapeBlend(new GrapeBlendPercentage(0.7), new GrapeVariety("PinotBlanc")),
};
var cmd = new UpdateGrapeBlend(sut.Id, grapes);
//Act
sut.Execute(cmd);
//Assert
sut.GetUncommittedEvents().Count().ShouldBe(1);
var evt = sut.GetUncommittedEvents().Single() as GrapeBlendUpdated;
evt.ShouldNotBeNull();
evt.Id.ShouldBeSameAs(sut.Id);
evt.UpdatedBlend.ShouldBeSameAs(grapes);
}
public void Execute(UpdateGrapeBlend cmd)
{
if (cmd.Grapes.Sum(x => x.Percentage.Value) > 1)
{
throw DomainError.Because("Grape blends cannot exceed 100% combined");
}
if (cmd.Grapes.GroupBy(x => x.GrapeVariety).Any(x => x.Count() > 1))
{
throw DomainError.Because("A grape can only appear once in the blend");
}
RaiseEvent(new GrapeBlendUpdated(Id, cmd.Grapes));
}
