public void TestNativeObjectReferenceCounting()
{
Dog dog = new Dog();
Assert.Equal(1, dog.ReferenceCount);
Assert.Equal(1, dog.NativeReferenceCount);
dog.AddRef();
Assert.Equal(2, dog.ReferenceCount);
Assert.Equal(1, dog.NativeReferenceCount);
DogOwner owner = new DogOwner(dog);
Assert.Equal(1, owner.ReferenceCount);
Assert.Equal(3, dog.ReferenceCount);
Assert.Equal(1, dog.NativeReferenceCount);
dog.Release();
Assert.Equal(1, owner.ReferenceCount);
Assert.Equal(2, dog.ReferenceCount);
Assert.Equal(1, dog.NativeReferenceCount);
dog.Release();
Assert.Equal(1, owner.ReferenceCount);
Assert.Equal(1, owner.NativeReferenceCount);
Assert.Equal(1, dog.ReferenceCount);
Assert.Equal(1, dog.NativeReferenceCount);
Assert.False(dog.IsInvalid);
owner.SayWalk();
owner.Release();
Assert.Equal(0, owner.ReferenceCount);
Assert.Equal(0, dog.ReferenceCount);
// Cannot check on the native ref count - deleted objects.
// TODO think of a simple way to test these
//Assert.Equal(0, owner.NativeReferenceCount);
//Assert.Equal(0, dog.NativeReferenceCount);
Assert.True(dog.IsInvalid);
Assert.True(owner.IsInvalid);
}
internal void say_walk(DogOwner owner)
{
IntPtr objPtr = owner.GetHandle();
NativeLib.GetFunction <say_walk_delegate>("say_walk")(objPtr);
}
internal int get_dog_owner_refcount(DogOwner owner)
{
IntPtr objPtr = owner.GetHandle();
return(NativeLib.GetFunction <get_dog_owner_refcount_delegate>("get_owner_refcount")(objPtr));
}