我的客户机测试程序将结果打印到控制台，这样，它们就与清单6中的性能跟踪信息混在一起。
My client test program prints results to the console, so these come out intermixed with the performance trace information in Listing 6.
测试脚本是以已定义的格式打印到STDOUT的任何程序。
A test script is any program that prints to STDOUT in a defined format.
Jester要通过检查打印的内容来判断测试是否成功，所以对System . err的程序输出会把Jester弄混。
Jester determines if the tests succeed by checking what's been printed, so program output to System.err often confuses it.
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