Playmode Test Default GameObject InjectionWorld is null

General
1

After replacing AI in game with FollowerEntity from Unity’s NavmeshAgent, everything has been working flawlessly. The only problem now is my playmode tests would fail if used run all, instead of running each one individually and the exception is world.DefaultGameObjectInjectionWorld is null.

If I create a new world, it becomes
InvalidOperationException: This system handle belongs to a different world.
Unity.Entities.WorldUnmanagedImpl.ResolveSystemStateChecked (Unity.Entities.SystemHandle id) (at ./Library/PackageCache/com.unity.entities/Unity.Entities/WorldUnmanaged.cs:718)
Unity.Entities.WorldUnmanaged.ResolveSystemStateRef (Unity.Entities.SystemHandle id) (at ./Library/PackageCache/com.unity.entities/Unity.Entities/WorldUnmanaged.cs:1132)
Pathfinding.ECS.EntityAccess`1[T].Update (Unity.Entities.EntityManager entityManager) (at ./Packages/com.arongranberg.astar/Core/ECS/EntityAccess.cs:154)
Pathfinding.FollowerEntity.Start () (at ./Packages/com.arongranberg.astar/Core/AI/FollowerEntity.cs:397)

I believe this is something to do with the fact that my playmode test changes scene, and something maybe is not reset properly with ECS. Any advice or solutions?

2

I’m not quite sure how to solve this. The FollowerEntity uses ECS, and thus the ECS worlds need to exist.

It’s possible that you could call:

Unity.Entities.DefaultWorldInitialization.DefaultLazyEditModeInitialize();

at the start of your test to solve this.