A shared platform included in a device can be configured to execute instructions from a first application and a second application to operate the device. The shared platform can be configured to receive mode instructions from the first application indicative of operating in a test mode where the shared platform provides simulated responses to the first application. The shared platform can receive a request from the first application pertaining to an operation of the second application. The shared platform operating in the test mode can determine a response to the request from the first application based on a simulation of providing the request to the second application.