public void should_remove_setup_system_subscriptions_and_dispose_when_removing_corresponding_entity()
{
var dummyGroup = new Group(typeof(TestComponentOne));
var mockPoolManager = Substitute.For <IPoolManager>();
var mockEventSystem = Substitute.For <IEventSystem>();
var mockSetupSystemHandler = Substitute.For <ISetupSystemHandler>();
var fakeSystem = Substitute.For <ISetupSystem>();
fakeSystem.TargetGroup.Returns(dummyGroup);
var entity = new Entity(Guid.NewGuid(), mockEventSystem);
entity.AddComponent(new TestComponentOne());
var fakeDisposable = Substitute.For <IDisposable>();
mockSetupSystemHandler.ProcessEntity(fakeSystem, entity).Returns(new SubscriptionToken(entity, fakeDisposable));
var systemExecutor = new SystemExecutor(mockPoolManager, mockEventSystem,
null, null, mockSetupSystemHandler, null, null);
systemExecutor.AddSystem(fakeSystem);
systemExecutor.OnEntityAddedToPool(new EntityAddedEvent(entity, null));
Assert.That(systemExecutor.GetSubscriptionCountForSystem(fakeSystem), Is.EqualTo(1));
Assert.That(systemExecutor.GetTotalSubscriptions(), Is.EqualTo(1));
systemExecutor.OnEntityRemovedFromPool(new EntityRemovedEvent(entity, null));
Assert.That(systemExecutor.GetSubscriptionCountForSystem(fakeSystem), Is.EqualTo(0));
Assert.That(systemExecutor.GetTotalSubscriptions(), Is.EqualTo(0));
fakeDisposable.Received().Dispose();
}