Pragmatists/JUnitParams

Parallelize test runs

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#84 创建于 2016年6月15日

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help wantedreviewed

描述

Could we add a feature for the runner to parallelize test execution (using an executor service based on the available core or whatever policy you deem appropriate)?

I've about 1000 parametrized tests in a single module and while intellij is showing me a total runtime of about 4s, in reality it takes more like 40-50s (i suspect the startup/shutdown harness work, class loading, etc, are at play). These are pure unit tests and do not access outside resources so they are definitely CPU bound and CPU utliziation is only about 30% while running. Suggestions very welcome. Thanks.

贡献者指南

技术栈
java
领域
testing
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
JavaJUnitconcurrent programming
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
Explore the JUnitParams runner class and its test execution mechanism. Consider using an ExecutorService to run tests in parallel, as suggested in the issue. Review the existing comments for additional context and potential pitfalls, such as managing test lifecycle and ensuring thread safety. Look at JUnit's parallel test execution features for inspiration.