A testing tool for verifying a reliability of robot software components is provided, and more particularly, a simulation-based interface testing automation system and method that may automatically perform a test for functions and performance of an interface with respect to robot software components are provided. Thus, it is possible to efficiently perform a test for an interface of robot software components. In particular, it is possible to automatically generate test cases required for testing, to perform a test in various languages, and to perform a test suitable for a robot.