Log4J2 - 如何在单元测试中禁用日志记录？

I am using Log4J v2.0 Beta3 in my application for logging and I am getting log messages generated when I run my unit tests. I checked the API for some way to set the log level to something like CRITICAL but I could not find any way to change the logger configuration.I am using Log4J v2.0 Beta3 in my application f