Search sold edition,rake sunspot:solr:run. NewsBulletin.solr_search,NewsBulletin.solr_reindex. Not working

vendor/plugins/sunspot_mongoid/examples/example.rb

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+$:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+require 'sunspot_mongoid'
+
+Mongoid.configure do |config|
+  config.master = Mongo::Connection.new.db('sunspot-mongoid-test')
+end
+
+# model
+class Post
+  include Mongoid::Document
+  field :title
+
+  include Sunspot::Mongoid
+  searchable do
+    text :title
+  end
+end
+
+# remove old indexes
+Post.destroy_all
+
+# indexing
+Post.create(:title => 'foo')
+Post.create(:title => 'foo bar')
+Post.create(:title => 'bar baz')
+
+# commit
+Sunspot.commit
+
+# search
+search = Post.search do
+  keywords 'foo'
+end
+search.each_hit_with_result do |hit, post|
+  p post
+end