因为在单元测试中的并行任务通常很小同时也很少，在调度程序切换线程之前它们通常一直运行到结束，除非强迫它(也就是通过wait )。

Because concurrent tasks in unit tests are usually small and few, they usually run to completion before the scheduler switches the thread, unless it is forced to (say, by wait ).

youdao

测试程序实际上也是很小的：它们只包括很少几行代码，只牵涉该示例驱动所阐述的要点。

These test programs are truly tiny: they contain just a few lines of code and are concerned with only whatever point the driver sample attempts to illustrate.

youdao