Abstract: A computer implemented method and system for generating a hybrid test construct, and for simulating and recording events, to test and simulate a virtual environment of connected devices. A plurality of real devices and virtual devices are provided and their behavior parameters are provided. A hybrid test construct of virtual and real devices is created by connecting the plurality of real devices and instantiating the virtual devices and external influencers. At least one container is specified to represent the virtual environment. A spatial relationship of the real devices, the virtual devices, and the external influencers are specified. Then at least one event is specified. A simulation is run where real data is received from the real devices that are then combined with a behavioral simulation of the virtual devices and external influencers. The results of the simulation are then compared to forecasted behavior.