日志文件的缺陷在于，在测试套件的结尾您无法去决定什么例外与什么测试用例相对应。

The limitation with the log file is that at the end of test suite you are not able to determine which exception belongs to which test case.

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收集调用信息可能会对应用程序性能产生一定影响，并且会增大日志文件的大小。

Collecting call information can have performance implications for your application and can increase the size of your log files.

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