跨JVM边界的回归测试选择

Ahmet Çelik, Marko Vasic, Aleksandar Milicevic, Miloš Gligorić
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引用次数: 34

摘要

现代软件开发过程建议每天多次将变更集成到项目的主要开发线路中。在集成新版本之前,开发人员会进行回归测试,以确保最新的更改不会破坏任何先前建立的功能。回归测试的成本很高,这是由于每天引入的修订数量的增加,以及开发人员为每个修订编写的测试数量的增加。回归测试选择(RTS)通过跳过不受最近项目变更影响的测试来优化回归测试。现有的动态RTS技术只支持用一种编程语言编写的项目,不幸的是,开源项目通常是用几种编程语言编写的。我们提出了第一种动态RTS技术,它不局限于预定义的语言边界。我们的技术在操作系统级别动态检测测试所依赖的所有文件工件。因此,我们的技术忽略了测试实际访问文件所使用的具体方法:通过生成新进程、调用系统调用、调用用不同语言编写的库、调用生成进行系统调用的进程的库等等。我们还提供了一组扩展点,允许与测试框架和构建系统顺利集成。我们在一个名为RTSLinux的工具中实现了我们的技术,作为一个可加载的Linux内核模块,并在21个Java项目上进行了评估,这些项目通过生成新进程或调用本机代码来逃避JVM,总共有2,050,791行代码。我们的结果表明,与执行所有测试相比,RTSLinux平均跳过了74.17%的测试,节省了52.83%的测试执行时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Regression test selection across JVM boundaries
Modern software development processes recommend that changes be integrated into the main development line of a project multiple times a day. Before a new revision may be integrated, developers practice regression testing to ensure that the latest changes do not break any previously established functionality. The cost of regression testing is high, due to an increase in the number of revisions that are introduced per day, as well as the number of tests developers write per revision. Regression test selection (RTS) optimizes regression testing by skipping tests that are not affected by recent project changes. Existing dynamic RTS techniques support only projects written in a single programming language, which is unfortunate knowing that an open-source project is on average written in several programming languages. We present the first dynamic RTS technique that does not stop at predefined language boundaries. Our technique dynamically detects, at the operating system level, all file artifacts a test depends on. Our technique is, hence, oblivious to the specific means the test uses to actually access the files: be it through spawning a new process, invoking a system call, invoking a library written in a different language, invoking a library that spawns a process which makes a system call, etc. We also provide a set of extension points which allow for a smooth integration with testing frameworks and build systems. We implemented our technique in a tool called RTSLinux as a loadable Linux kernel module and evaluated it on 21 Java projects that escape JVM by spawning new processes or invoking native code, totaling 2,050,791 lines of code. Our results show that RTSLinux, on average, skips 74.17% of tests and saves 52.83% of test execution time compared to executing all tests.
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