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The utilization of log files generated by test executions: A systematic literature reviewGabaire, Elmi Bile January 2023 (has links)
Context: Testing is an important activity in software development and is typically estimated to account for nearly half of the efforts in the software development cycle. This puts a great demand on improving the artifacts involved in this task such as the test cases and test suites (a collection of test cases). Objective: When executing test programs, it is typical to record runtime information associated with the test cases in the form of test execution logs or traces. The aim of this work is to explore how this information can be utilized to improve the software testing process. To this end, two main aspects are investigated which are (1) in the context of test case generation and (2) in the context of different optimizations regarding existing test suites. Furthermore, the role of the logs regarding fault localization in connection with improving the existing test suites is investigated. Method: A systematic literature review is conducted to investigate, identify and analyze the existing literature on test case generation and test suite optimization that utilizes the test execution logs. Results: After a rigorous search in six digital databases, 26 primary studies were identified. 5 of the selected papers propose approaches in the context of test data generation, 8 papers suggest test case prioritization (TCP) techniques, 4 papers discuss approaches in test case selection (TCS), and 5 papers propose approaches in test suite minimization (TSM). Furthermore, we identified, 3 papers that discuss fault localization, and one paper that discussed the decomposition of large test cases into smaller single purpose test cases using the logs from previous test executions. Conclusion: The test execution logs are a useful source of information for different testing activities. Regarding test case generation, the main theme observed is the use of genetic algorithms in attempting to generate appropriate test cases when the alternative might have been to use random test data generation methods. When it comes to improving existing test suites several approaches within TCP, TCS and TSM such as similarity-based, modification-based, cluster-based, and search-based were put forward by the authors of the selected primary studies. Furthermore, several fault localization techniques using the logs were suggested.
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