A computer-based automated testing framework tests a multimedia application (such as a Flash application running in a player module) that includes one or more Flash objects by executing test scripts in an external Java-based test module that uses proxy objects in the test module to represent the Flash objects in the player module. Correspondence between the proxy object and Flash objects is maintained by translating the first test script into a command, sending the command from the external test module to the player module, interpreting the command by accessing a lookup table at the player module, and then returning a value to the external test module in response to the command.