Abstract
This paper describes a framework for structural testing in a Java Virtual Machine (JVM), called Jazz2. The framework provides instrumentation, memory management, control flow analysis, and callback handling services for structural tests, such as branch and node coverage. Additionally, it has a language for the specification of how and where to test. These facilities allow for the efficient implementation of demand-driven and static testing techniques. Jazz2 supports an extensible test library, where new tests can be easily added. The paper describes the framework, its implementation, and evaluates how the framework interacts with a JVM, the Jikes Research Virtual Machine (RVM). We demonstrate the ease of implementing a structural test in Jazz2, extending the test library, and specifying the use of these tests with our language. Our experimental results show that Jazz2 has low overhead in both time and memory, and has minimal interaction with the RVM's garbage collector.
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