public void TestDefaultProcessors()
{
var registry = new ServiceRegistry();
var entityManager = new CustomEntityManager(registry);
// Create events collector to check fired events on EntityManager
var componentTypes = new List <Type>();
var entityAdded = new List <Entity>();
var entityRemoved = new List <Entity>();
entityManager.ComponentTypeAdded += (sender, type) => componentTypes.Add(type);
entityManager.EntityAdded += (sender, entity1) => entityAdded.Add(entity1);
entityManager.EntityRemoved += (sender, entity1) => entityRemoved.Add(entity1);
// No processors registered by default
Assert.Empty(entityManager.Processors);
// ================================================================
// 1) Add an entity with the default TransformComponent to the Entity Manager
// ================================================================
var entity = new Entity();
entityManager.Add(entity);
// Check types are correctly registered
Assert.Single(componentTypes);
Assert.Equal(typeof(TransformComponent), componentTypes[0]);
// Check entity correctly added
Assert.Single(entityManager);
Assert.True(entityManager.Contains(entity));
Assert.Single(entityAdded);
Assert.Equal(entity, entityAdded[0]);
Assert.Empty(entityRemoved);
// We should have 1 processor
Assert.Single(entityManager.Processors);
var transformProcessor = entityManager.Processors[0] as TransformProcessor;
Assert.NotNull(transformProcessor);
Assert.Single(transformProcessor.TransformationRoots);
// TODO: Check the root entity.Transform
// Check internal mapping of component types => EntityProcessor
Assert.Single(entityManager.MapComponentTypeToProcessors);
Assert.True(entityManager.MapComponentTypeToProcessors.ContainsKey(typeof(TransformComponent).GetTypeInfo()));
var processorListForTransformComponentType = entityManager.MapComponentTypeToProcessors[typeof(TransformComponent).GetTypeInfo()];
Assert.Single(processorListForTransformComponentType);
Assert.True(processorListForTransformComponentType[0] is TransformProcessor);
// clear events collector
componentTypes.Clear();
entityAdded.Clear();
entityRemoved.Clear();
// ================================================================
// 2) Add another empty entity
// ================================================================
var newEntity = new Entity();
entityManager.Add(newEntity);
// We should not have new component types registered
Assert.Empty(componentTypes);
// Check entity correctly added
Assert.Equal(2, entityManager.Count);
Assert.True(entityManager.Contains(newEntity));
Assert.Single(entityAdded);
Assert.Equal(newEntity, entityAdded[0]);
Assert.Empty(entityRemoved);
// We should still have 2 processors
Assert.Single(entityManager.Processors);
Assert.Equal(2, transformProcessor.TransformationRoots.Count);
componentTypes.Clear();
entityAdded.Clear();
entityRemoved.Clear();
// ================================================================
// 3) Remove previous entity
// ================================================================
entityManager.Remove(newEntity);
// Check entity correctly removed
Assert.Single(entityManager);
Assert.False(entityManager.Contains(newEntity));
Assert.Empty(entityAdded);
Assert.Single(entityRemoved);
Assert.Equal(newEntity, entityRemoved[0]);
Assert.Single(transformProcessor.TransformationRoots);
componentTypes.Clear();
entityAdded.Clear();
entityRemoved.Clear();
}
