我想，一些简单的重构可以在没有单元测试的情形下进行。
I imagine some simple refactorings can be performed even without unit testing in place.
现在，想像一下对发出开销较高的SOAP调用的类进行单元测试。
Now imagine trying to unit test a class that makes an expensive SOAP call.
我认为，单元测试的情况下会收拾自己。
I would assume that the unit test context would clean up after itself.
在前面提到的情况下，可能无法更新单元测试。
In the cases mentioned earlier, it might not be possible to update the unit tests.
在前面提到的情况下，可能无法更新单元测试。
In the cases mentioned earlier, it might not be possible to update the unit tests.
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