Sorry, I read your post wrong. But still, the permissions set on an actual folder are for the files/folders that are in it.
Where is your 'testing' directory in your file system? If it is /testing normal users won't be able to delete the folder because the permission ON the actual folder are that of / the files IN the 'testing' directory are decided by the chmod you put on the 'testing' directory.
It's a bit confusing. I hope I didn't confure you even more.