Chat and share some testing methods and means about common components and common platforms!

     Generally, large Internet companies have R&D departments for basic technologies, including the R&D of public components and public platforms, and the underlying, general, and abstract technologies involved in this piece are not as intuitive and easy to understand as application business platforms. It is said that testing the application business platform is very fast; if you use the same method to test public components and public platforms, you may feel that there is nothing to measure, there is no interface, no exposed interface, and you feel that there is nowhere to start; in many cases, you may develop yourself to do some Unit testing is called white box testing, but it is not standardized, and if you test the things you develop yourself, you may not find too many problems in many cases; general company testers do not have this ability; the
      above is actually a current situation of our company , There is no testing for public components and public platforms, and development is only appropriate to do unit testing;
      such as public components and platforms: distributed cache, message middleware, service framework, workflow, mail system, public safety system, etc.

      The great gods should have also had these experiences. Do you have any good experiences, ideas, and suggestions to share?
      What good testing methods, testing frameworks, and what kind of testing capabilities should be used to perform these tasks?