Abstract: It is essential to ensure that the platform meets the functional requirements via function test. This paper discussed a model-based testing approach. The formal model of the platform was established by refinement in Event-B. Then, the correctness of the model was verified by mathematical proofs. The test sequences that were generated using Ll algorithm based on the Event-B model could be targeted to meet the test requirements which could help to ensure the completeness, and improve the efficiency of the test.