private static void AccessorTest(
string navigationName, Func <MyEntity, IEnumerable <MyOtherEntity> > reader, bool initializeCollections = true)
{
var accessor = new ClrCollectionAccessorFactory().Create(CreateNavigation(navigationName));
var entity = new MyEntity();
var value = new MyOtherEntity();
if (initializeCollections)
{
entity.InitializeCollections();
}
Assert.False(accessor.Contains(entity, value));
accessor.Remove(entity, value);
accessor.Add(entity, value);
Assert.True(accessor.Contains(entity, value));
Assert.Equal(1, reader(entity).Count());
accessor.Remove(entity, value);
Assert.False(accessor.Contains(entity, value));
Assert.Equal(0, reader(entity).Count());
}
public void Delegate_accessor_always_creates_collections_that_use_reference_equality_comparer()
{
IMutableModel model = new Model();
var entityType = model.AddEntityType(typeof(MyEntity));
var otherType = model.AddEntityType(typeof(MyEntityWithCustomComparer));
var foreignKey = otherType.AddForeignKey(
otherType.AddProperty("MyEntityId", typeof(int)),
entityType.SetPrimaryKey(entityType.AddProperty("Id", typeof(int))),
entityType);
var navigation = foreignKey.SetPrincipalToDependent(
typeof(MyEntity).GetProperty(
nameof(MyEntity.AsICollectionWithCustomComparer),
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance));
RunConvention(navigation);
var accessor = new ClrCollectionAccessorFactory().Create((INavigation)navigation);
var entity = new MyEntity(initialize: false);
var value = new MyEntityWithCustomComparer {
Id = 1
};
Assert.False(accessor.Contains(entity, value));
accessor.Add(entity, value, forMaterialization: false);
value.Id = 42;
accessor.Add(entity, value, forMaterialization: false);
Assert.Equal(1, entity.AsICollectionWithCustomComparer.Count);
}
private void AccessorTest(
string navigationName,
Func <MyEntity, IEnumerable <MyOtherEntity> > reader,
bool initializeCollections = true)
{
var accessor = new ClrCollectionAccessorFactory().Create(CreateNavigation(navigationName));
var entity = new MyEntity(initializeCollections);
var value = new MyOtherEntity();
Assert.False(accessor.Contains(entity, value));
accessor.Remove(entity, value);
accessor.Add(entity, value, forMaterialization: false);
Assert.True(accessor.Contains(entity, value));
Assert.Single(reader(entity));
accessor.Remove(entity, value);
Assert.False(accessor.Contains(entity, value));
Assert.Empty(reader(entity));
}