1. Create empty directory.
2. Try "SVN Add" on it: it should be added.
3. Try "SVN Revert" on it: it should be reverted.
4. Try "SVN Add", then "SVN Commit". It should be commited fine.
5. Try "SVN Delete", then "SVN Commit". It should be deleted from CVS, but dir shoudn't be deleted from drive.
6. Try the same with a dir and an empty file in it clicking right-clicking on the directory name and in the directory itself on the empty space.