Added a test method contributed by James M Lawrence, and merged a modification from r24868.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@25616 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added a test method contributed by James M Lawrence,
and merged a modification from r24868.
method. Patch by James M. Lawrence.
c.f. [ruby-core:25536], r24867 and r24868.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@25616 b2dd03c8-39d4-4d8f-98ff-823fe69b080e