Why would unit testing a private method using reflection fail if obfusaction is used?

Question

I have been through this question on SO regarding unit testing private methods and fields and this answer says that it can be done via reflection mechanism . But there is a commnent saying that it would fail miserably in case of obfuscation .Why is it so ?

Answer 1

Obfuscation works by replacing symbol names (method, field ..) with difficult to read names. So after de-compiling you get a java files, you get a really useless java code.

The method name would have changed, so finding via reflection will not work. (unless the test code uses reflection with obfuscated method name- not an easy job )