test_sprintf.rb: sprintf with a hash as parameter

* test/ruby/test_sprintf.rb (test_hash): Added tests for sprintf
  with a hash as parameter.  [Fixes GH-491]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44456 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_sprintf.rb: sprintf with a hash as parameter

* test/ruby/test_sprintf.rb (test_hash): Added tests for sprintf
  with a hash as parameter.  [Fixes GH-491]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44457 b2dd03c8-39d4-4d8f-98ff-823fe69b080e