[PATCH] D41535: Add -vfsoverlay option for Clang-Tidy

[Vladimir Plyashkun via Phabricator via cfe-commits]

vladimir.plyashkun added a comment.

In https://reviews.llvm.org/D41535#981928, @ilya-biryukov wrote:

> This looks good, but we should add a test.
>  Should've noticed that before, sorry for the slowing this down a bit more. After the test is there, I'm happy to commit this change for you.


IIUC, it will be little bit difficult to test it, because whole logic placed in the `ClangTidyMain`. 
All existing clang-tidy unit tests use direct calls of `ToolInvocation` which is doesn't know about `vfsoverlay` options.


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D41535