Research Article
Formal Specification Based Automatic Test Generation for Embedded Network Systems
Pseudocode 1
An example SENS specification.
<main.cls> | () Import A, B; | () Class main | () Data | () onoff_status {on,off}; | () Var | () B1, B2 : B; | () A1 : A(B1, B2); | <A.cls> | () Import B; | () Extern | () Data | () onoff_status; //from main | () Class A(arg1 : B, arg2 : B) | () Var | () op : onoff_status {off}; | () Timer | () t 2 min; | () | () Function SendingM | () Require | () ~op==off && op==on : null: t!start; | () op==on : t?ring : arg1.ch!m,arg2.ch!m; | <B.cls> | () Extern | () Data | () onoff_status; //from main | () Class B | () Data | () m_type {m}; | () Var | () op : onoff_status {off}; | () lamp : onoff_status {off}; | () Channel | () ch : m_type; | () | () Function Lighting | () Require | () op==on && lamp==off : ch?m:lamp==on; | () op==off −> lamp==off; |
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