gistfile1.rb

# encoding: utf-8
require 'mongo'

host = ENV['MONGO_RUBY_DRIVER_HOST'] || 'localhost'
port = ENV['MONGO_RUBY_DRIVER_PORT'] || Mongo::Connection::DEFAULT_PORT

puts "Connecting to #{host}:#{port}"
db = Mongo::Connection.new(host, port).db('jon')
coll = db.collection('test')

puts ">> clear collection jon:test"
coll.clear
puts  "Count of jon:test #{coll.count}"

puts ">> insert an object with attribute sample1"
string = "hello"
puts string
puts string.encoding
oid = coll.save({'sample1' => string})
doc = coll.find_one()
puts doc['sample1'].encoding