A protocol reverse test scenario choreography method for CPS

Cyber-Physical Systems are gradually being applied to various industries in society. Due to their large scale and complex structure, it is necessary to conduct sufficient tests before formal deployment to ensure system reliability. However, due to the complexity of the system, the protocols and operational environments that different communication entities must follow when communicating are complex and diverse, so the convenient scheduling of test scenarios becomes more important. This paper proposes a visual test scenario choreography method based on protocol reverse construction, which can obtain information by recording basic operations, and then graphically arrange actions according to the acquired data to generate more complex test scenarios to be tested. Visual test scenario choreography can also improve test efficiency. The system is thoroughly tested. We conducted experiments on the Raspberry PI 3B+ smart car. We obtained the initial test file of raspberry PI 3B+ smart car through protocol reverse technology based on instructions, and generated a new test file through visual scenario choreography. The experimental results show that our method can play a role in the scenario where the protocol of the system under test is unknown, and the graphical test scenario choreography can also speed up the test. The method provides useful insights for researchers in related fields to help them deploy their own tests.