the end of each block. [ruby-dev:31470]
* enumerator.c (enumerator_next_p): call init_next if not
initialized. [ruby-dev:31514]
* test/ruby/test_enumerator.rb: add tests for Enumerator.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13120 b2dd03c8-39d4-4d8f-98ff-823fe69b080e