Specs for deprecated methods

[andrykonchin]

There are some deprecated/obsolete methods like File.exists?, Thread#safe_level etc in the core library.

Looks like they aren't covered with tests there and moreover some existing specs were deleted recently - File.exists?, Dir.exists? and FileTest.exists?` (commit).

So I am wondering whether it is a well-considered decision or it's unintentional situation. I believe that as far as these methods are still available in MRI they should be a part of the specification.

[eregon]

I agree, the specs should remain as long as there is a non-EOL version that supports it.

We just need to find a way to silence those deprecation warnings for the deprecated but ideally not for the non-deprecated methods.