Geoffrey Watson

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In this paper, we demonstrate a method that uses the model transformation technology of MDA to generate unit test cases from a platform-independent model of the system. The method we propose is based on sequence diagrams. First we model the sequence diagram and then this model is automatically transformed into a general unit test case model (an xUnit model(More)
The refinement calculus for the development of programs from specifications is well suited to mechanised support. We review the requirements for tool support of refinement as gleaned from our experience with existing refinement tools, and report on the design and implementation of a new tool to support refinement based on these requirements. The main(More)
The use of formal methods in software development seeks to increase our confidence in the resultant system. Their use often requires tool support, so the integrity of a development using formal methods is dependent on the integrity of the tool-set used. Specifically its integrity depends on the theorem prover, since in a typical formal development system(More)
This paper describes a practical application of MDA and reverse engineering based on a domain-specific modelling language. A well defined metamodel of a domain-specific language is useful for verification and validation of associated tools. We apply this approach to SIFA, a security analysis tool. SIFA has evolved as requirements have changed, and it has no(More)
Previous work on formally modelling and analysing program compilation has shown the need for a simple and expressive semantics for assembler level programs. Assembler programs contain unstructured jumps and previous formalisms have modelled these by using continuations, or by embedding the program in an explicit emulator. We propose a simpler approach,(More)
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