For normal methods I use the Pascal casing convention (or UperCamelCase as it is called by ReSharper). But in unit tests readability rules and therefore I use very long names like:
ReSharper marks them as violating the naming style, which is quite annoying because this distracts from real problems. Luckily there is a way to tell ReSharper to use a different naming convention for test methods. It is a little bit hidden in the ReSharper options, but here is the way to go:
Now you have no warnings in your tests anymore that complain of inconsistent naming styles. Naming styles for non test classes and methods are still working as before. This was tested with ReSharper 5.1.