* test/fileutils/test_nowrite.rb: test it. * test/fileutils/test_dryrun.rb: new file. * test/fileutils/test_verbose.rb: new file. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9286 b2dd03c8-39d4-4d8f-98ff-823fe69b080e