rubyspec/rubyspec — pull request #209 by krekoten (2013-05-06 15:59:44+00:00)
Title: Exception#set_backtrace

Specs added:

Exception#set_backtrace
- allows the user to set the backtrace to string
- allows the user to set the backtrace to nil
- raises TypeError when argument is not array
- raises TypeError when argument contains non String element