We're currently developing our OCPP2.0.1 charging simulator; it can currently do some of the basic commands and functionality, and this will soon be expanded to include a lot more!
Any CPMS/CSMS you connect the simulator to will simply see an OCPP2.0.1 compliant charger - it won't need any special treatment! It will send all the data and accept all the commands a real charger would! The complete interaction can be tested to emulate an EV making use of an EVSE, with all the events and communication being sent in real-time and correct order according to the OCA OCPP2.0.1 protocol specification. You can quickly start and stop your simulator to reset testing whenever you need to.