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Abstract

Separation of parameterized unit tests (PUTs) from specific test cases supports many benefits including automated test case generation. Symbolic execution assigns symbolic input variables to parameters of a parameterized unit test. Path constraints of an implementation under test (IUT) are identified during symbolic execution. A constraint solver automatically generates test cases by determining the test inputs that satisfy one of more paths, each described by constraints, through the IUT. PUTs are used to populate behavioral summaries. Behavioral summaries are used later in future symbolic executions to emulate summarized methods. Behavioral summaries comprise behavioral purity axioms. Behavioral purity axioms require that an intensional heap before execution of a PUT be equal to the intensional heap after execution. An intensional heap is provided to represent state changes performed by summarized methods. The extensional heap is used to explicitly update memory locations, e.g. object fields or array elements.

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