public void ConcertIsPlannedWithIdAndValidCapacity()
{
var id = new ConcertId(Guid.NewGuid());
new ConstructorScenarioFor <Concert>(() => Concert.Plan(id, 100)).
Then(ConcertEvents.Planned(id)).
Assert();
}
public void PlanningConcertWithInvalidCapacityThrows()
{
new ConstructorScenarioFor <Concert>(() => Concert.Plan(new ConcertId(Guid.NewGuid()), -4)).
AssertThrows(new ArgumentException("venueCapacity"));
}