以编程方式删除环境变量 [英] Remove environmental variable programmatically
问题描述
我需要为一些C ++代码编写一个单元测试,以检查环境变量的存在.我正在使用MSVS 2008和gtest作为我的框架.我使用putenv添加环境变量,使用getevn检查环境变量,但是我不知道如何删除它,因此其他任何测试都不会看到它.我意识到这可能很容易,但是我无法在互联网上找到答案.谢谢
I need to write a unit test for some C++ code that checks for the presence of an environmental variable. I'm using MSVS 2008 and gtest as my framework. I add the environmental variable using putenv, I check the environmental variable using getevn, but I can't figure out how to remove it so that no other test will see it. I realize this is probably easy, but I can't find the answer on the internet. Thanks
推荐答案
再次调用 putenv
指定"SOME_VAR ="
作为参数将删除环境变量 SOME_VAR
.顺便说一句,由于不推荐使用 putenv
,Microsoft建议使用 _putenv
.
Calling putenv
again specifying "SOME_VAR="
as parameter will delete environment variable SOME_VAR
. btw, Microsoft recommends using _putenv
as putenv
is deprecated.
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