单元测试某些代码是否线程安全的最佳方法？
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Unit test for thread safe-ness?
I'm looking for best way to unit test if some code is thread safe.
I'm using NUnit and Moq as unit test framework.
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那么，您的代码使用并发吗？因为如果不这样做它就已经是线程安全的了。我相信你的问题从根本上来说是错误的，应该是“如何设计线程安全代码？”的问题。
这个问题的问题在于它非常广泛，并且在设计线程安全的代码时需要考虑很多事情。
但是，您可以采取一些措施来测试您的代码，即在较长时间内使用暴力和多线程。如果结果不一致，则可能存在同步问题。当然，这里的问题是不一致的结果不一定是与并发相关的问题，它仍然可能在使用单个线程时发生。
您需要做的就是查看您期望线程安全的代码，并基本上问自己“如果我在这里无限期地睡眠会发生什么？”。如果您得出结论，在运行并发代码时一切正常，并且有大量随机睡眠持续时间交错（这使得并发问题更加明显），那么您就走在正确的轨道上。
Well, does your code use concurrency? Because if it doesn't it already thread-safe. I believe your question is fundamentally wrong and should have been something along the line of "How do I design thread safe code?"
The problem with such a question is that it's very broad and there are a plethora of things to consider when designing code to be thread-safe.
However, something you can do to test your code, is to use brute force and multiple threads over an extended period of time. If the results are inconsistent, then there could be a synchronization problem. The issue here is of course that the inconsistent results doesn't have to be a concurrency related issue, it could still have happen using a single thread.
What you need to do is to look at the code that you expect to be thread-safe and basically ask yourself "What happens if I sleep for an indefinite amount of time here?". If you conclude that everything works while running the concurrent code with a lot of random sleep durations interleaved (this makes concurrency issues more apparent) then you're on the right track.