This tutorial covers writing unit tests for ECS. This is a practical tutorial on the process not an essay on what to test. If you read nothing else read the IMPORT: box below on pressing apply.
Build tested on entities 0.4.0 preview.10 . Packages used are shown here. Also tested on Unity 2019.3f3 & 2019.3f5

The source is at https://github.com/ryuuguu/Unity-ECS-Life.git. The Zip file of the project is at http://ryuuguu.com/unity/ECSLifeTutorials/ECSLifeTutorial6.zip
Warning: DOTS is still bleeding edge tech. Code written now will not be compatible …