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Mutation testing has been used to assess and improve the quality of test inputs. Generating test inputs to achieve high mutant-killing ratios is important in mutation testing. However, existing test-generation techniques do not provide effective support for killing mutants in mutation testing. In this paper, we propose a general test-generation approach, called PexMutator, for mutation testing using...
Test coverage criteria including boundary-value and logical coverage such as Modified Condition/Decision Coverage (MC/DC) have been increasingly used in safety-critical or mission-critical domains, complementing those more popularly used structural coverage criteria such as block or branch coverage. However, existing automated test-generation approaches often target at block or branch coverage for...
Regression test generation aims at generating a test suite that can detect behavioral differences between the original and the modified versions of a program. Regression test generation can be automated by using dynamic symbolic execution (DSE), a state-of-the-art test generation technique, to generate a test suite achieving high structural coverage. DSE explores paths in the program to achieve high...
Dynamically discovering likely program invariants from concrete test executions has emerged as a highly promising software engineering technique. Dynamic invariant inference has the advantage of succinctly summarizing both "expected" program inputs and the subset of program behaviors that is normal under those inputs. In this paper, we introduce a technique that can drastically increase...
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