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Although there has been recent research into ways to design visual programming languages and environments, little attention has been given to systematic testing in these languages, and what work has been done does not address "power" features such as recursion. In this paper, we discuss two possible ways the "What You See Is What You Test" methodology could be extended to accommodate recursion. The approaches are presented in terms of their testing theoretic aspects and then implementationdoi:10.1109/hcc.2001.995276 dblp:conf/vl/BurnettRKCR01 fatcat:jgf7lxgb3ffgvndrnywkmfirwi