assertions.rb: return the exception
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54653 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
assertions.rb: return the exception
the rescued exception object as well as assert_raise.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54653 b2dd03c8-39d4-4d8f-98ff-823fe69b080e